Author: Sian

  • Why do some showjumpers ride with their elbows sticking out? (Musculo-skeletal modelling perspective)

    So today we answer the question “why do the
    Whitakers, Nick Skelton etc. ride with their elbows sticking out?”

    I say we. I mean me, but you know join in
    any time.*

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    I’m slightly fascinated with the “Whitaker
    elbow.” In the 90s we all did it and as I just wrote up some old notes (see 12 things I learnt on my first Tom Whitaker lesson) it sprung back to
    mind again. Conventional riding position has your elbow fairly flat to your sides, giving you a fuller range of arm length and more effective shock absorption.
    It allows your hands to follow the horse’s mouth, giving a soft contact. Yet in
    show jumping, particularly in old school riders, an outward elbow is common –
    think John Whitaker – or any Whitaker – Nick Skelton, Tim Stockdale etc.  I’ll let you do the Google work.

    So what’s the advantage?

    First let’s recap the conventional position
    and hopefully head off any angry commentators.

    Conventional
    position:

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    If like me you have a short arm this gives
    you extra reach for the horse to lengthen his neck. It also gives you more degrees
    of freedom (elbow, shoulder and wrist), and better motor control, so you’re
    more able to move your hand as necessary to keep rein tension constant (follow
    the horse’s mouth). It’s genius, it works and I’m not here to argue against it.

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    Same scale with arm (glenohumeroid) more flexed and elbow
    more extended, and look how far the hand has moved. Brilliant.

    Elbows Out

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    What happens if we turn our elbows out? To
    imitate this posture we’re both abducting the arm (moving it away from the
    body) and rotating it so that the elbow swings forward. What happens then is the
    shoulder and back muscles are stretched, opening the rib cage (pectoralis) and pulling
    on your spine (rhomboid major). This also activates your core muscles (which include
    spine stabilisers, diaphragm and the abdominals) to stabilise the spine and rib
    cage.

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    Graph
    for people that like graphs. Confusingly here negative adductions (to the left) mean movement
    away from the body, which increases pull on pectoralis major.

    Elbows
    out is often used in “power poses” which are meant to give a confidence boost or psychological
    lift and I suspect this is partly as a back widening effect, and also partly
    as opening the ribs improves breathing, which in turn calms the physiological (fear)
    response. I’m speculating here.

    Sadly for any type of riding, soft hands are basically
    everything and this posture definitely puts your soft hands at a disadvantage so this isn’t a recommendation.
    Try now just moving your hands forward and back towards an imaginary horse’s
    mouth in the elbows-out and elbows-in positions and feel the resistance that turning your elbows out causes. However personally I often adopt a “sit tall, elbows
    out” posture for at least the first fence or two if I’m feeling nervous when I’m jumping,
    and for me and my horses it helps. At my (low) level of refinement the thing that helps my hands the most is a stable core with relaxed arms so if turning my elbows out a little even just reminds me to do that then there’s another trick that I have.

    Disclaimer

    *
    This is a real quick and dirty “I should be cooking dinner”
    set of calculations based mostly on the musculo-skeletal modeller’s
    perspective of the effects of turning out the elbows, not anyone’s actual reasons. Happy to hear more applied or considered thoughts. Also I’m not
    really allowing for the full 3D aspects here and if there’s one
    cardinal biomechanics rule it’s always be very, very careful if you’re not in
    full 3D. It’s easy to measure and analyse things in 2D. Easy, and almost always
    wrong. In this case I have looked in 3D but only in a static sense. Similarly in places I say shoulder joint, when I mean one or all of the four girdle joints, and so on, because let’s not get carried away here and hide behind confusing terminology in place of accuracy. If there’s
    interest in this beyond my dinner-time musings I can always actually run some movement
    data and model it properly!

  • 12 things I learnt on my first Tom Whitaker showjumping lesson

    • Look to your fence early, practise seeing the stride as early as you can. 
    • There are only two stride patterns. You’re
      half a stride out or you’re on the perfect stride. If you can’t see it just half halt and then carry on – don’t keep holding or checking as then you’re just swapping between the two.
    • Establish a good forward canter and stick
      to it all the way around. Try to stay in the same rhythm.
    • Don’t hold your horse off the fences, let
      him make a mistake and learn, “otherwise you end up with a Nations Cup horse not
      one that’ll come back the next day and win the Grand Prix”. 
    • If you over-collect a careful horse eventually they’ll start to worry about hitting the back rail. Better to keep them bowling forward and let them learn to back off the fences and round for themselves. If the horse over-jumps in the ring, ride it even more forward.
    • Soft hands. Establish canter early then stay
      quiet into fence. Your job is to get the horse to the fence in a good canter
      and then try not to distract him when he goes to jump.
    • If you increase your hand you have to increase your leg. The horse must always be connected between hand and leg, never use one without the other.
    • If the horse spooks just ignore it. You
      can’t do anything about a horse spooking but you can avoid making a big deal out
      of it. Don’t hit a horse that stops from a spook. Just turn him around and try
      again. If he’s going to jump, he’ll jump, hitting him isn’t going to make a
      difference. 
    • Practise lengthening and shortening transitions within a gait. Start very gradual and tactful and then increase demand as the horse stays relaxed. 
    • It’s important for the horse to swing through the shoulders. Send the trot forward until his shoulders are moving well, and then collect trying to keep that swing. Sit quiet and straight and fold straight.
      The horse must jump straight.
    • Use tram lines and teeny cross-poles to
      train an un-straight horse until it comes naturally to him. No point practising
      his bad habit.
    • Tom has never known a horse that’s scared
      of height. They are scared of tense riders, as that tension goes straight to
      the hands and so the mouth. If the rider is relaxed they can come down to
      anything. 
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  • Back to reality – equine systemic proteoglycan accumulation

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    There’s been a bit of a quiet patch on the site with no new articles for a while. The Mighty Hobo came temporarily out of retirement and I pared down all other activities to spend as much time with him as I had, and we loved every minute that we got to spend doing our favourite thing. Below is the last jumping round we ever did, two months ago now. If you look carefully you can see he has too much extension in his fetlocks, indicating too much ligament laxity – subsequently confirmed as Equine Systemic Proteoglycan Acculumation (ESPA, also known as Degenerative Suspensory Ligament Desmitis). He is also losing his jump a little but this is hard to spot if you’re unfamiliar as he tries so very hard. He was immediately re-retired and is currently enjoying (OK hating) some time with his pony in the field where we hope to keep him comfortable enough for a little while longer. 

    The little buck through the finish isn’t resistance or pain, it’s because I allowed him to lock on to the wrong final fence – he’s a professional so he only bickers with me once he’s got us over the jump. Hobo pretty much only jumped clear rounds and I never carried a whip. The freeze frames below make the hyperflexion issue a little easier to see as his fetlocks hit the deck even in canter (as opposed to take off or landing, where it is not so abnormal). Apologies that the video is not great quality due to it’s circumstantial nature.

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    Below is a video of a comparative, unridden canter & trot in the field over a year ago but with hindsight already a little suspect.

    Ultrasonic evaluation of suspensory ligaments can confirm or rule out lesions or degeneration,

    and it is usually the suspensory ligaments that fail first. The main reason, though, for the change of name to ESPA is that it is a systemic disorder so all connective tissues may be affected, including the ligaments, tendons, heart and eyes (e.g. Halper et al., 2006). These horses will not improve, we do not currently have a way to stop or reverse proteoglycan accumulation, they can only be managed in their deterioration until the time comes for euthanasia. It appears to be hereditary, so breeding must be avoided, although it is no longer thought to be restricted to certain breeds. Symptoms may become apparent from birth and Hobo was lucky to manage his condition for as long as he did, given that we didn’t even realise what we were up against. 

    With my boy on his way out I’m planning to throw myself into some more articles, videos and demos and would be very happy to hear your requests. We currently have a few series to continue including rider exercises, the equine back, and horse gear and gadgets. There may also be the odd mention of the glamorous Mr Remus (below) who is doing his best to step up, but they’ll never be another Hobo, and the Hobo updates end here.

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  • Horse gear and gadgets 1: Biomechanics of the fail safe

    I have a teenager. He’s fairly sweet and not normally given to tough love. Here’s what he had to say about my most recent riding injury:

    Me: It’s just unfair. I tucked, I rolled, I got out the way of the horse. I did what I was meant to do.

    Teenager: And you broke your shoulder not your back. That’s exactly what’s meant to happen. Now you get over it.  

    Voila, the effect of being parented by a biomechanist who consults in forensics. My son instinctively understands a fail-safe. From an engineering perspective a fail-safe is a way of preventing a more serious failure. It is a safety net – it doesn’t stop you from falling, but it does prevent the full impact of hitting the floor. It’s inconvenient when your house plunges into darkness because of a trip switch or a fuse that’s blown, but on the plus side

    your house did not burn down and you are not on fire. In the horse’s legs the accessory (check) ligaments of the flexor tendons are partly a fail safe. When they break it is a large problem and they take a while to heal but nothing like the carnage that would have occurred if the check ligament had not “taken the strain” literally and figuratively and the main tendon had been allowed to tear.

    In the British horse industry in particular, we love a fail safe. We tie our horses up with a breakable link, designed to snap under tension, a practise often frowned upon in the U.S.A. I see the arguments on both sides but I will say this: I once cross-tied a horse with both a leadrope tied solid and a travel bungee. When the horse slipped the travel bungee did exactly what it was meant to do and snapped, the leadrope did not and it flipped the horse over. The physical and psychological damage was pretty dramatic, and even the pure financial cost was a lot more than a replacement bungee. Anecdotal evidence counts for little other than to illustrate that whilst there are few times when you want an unexpectedly loose horse, there are some.  

    I’ve seen a lot of people complain when their kit broke, and I myself have lamented my damaged hat, ripped rug, snapped headcollar, etc. Working in equine biomechanics as an expert witness though, I’ve seen a lot of what happens when there is no fail safe. Personally, I’ve broken my ankle against a stirrup, so last year when I merely broke my stirrup I was happy enough to pay out to replace it. Similarly when a rug rips or the catch breaks, it’s always frustrating, but I’ve seen the alternative and that’s really not pretty. We use leather headcollars not just because they look the business but because – in the case of no acceptable alternative – they snap. Your stirrups may now be safety stirrups and your stirrup bars have long been designed to release the leathers. It’s worth extending that logic to every part of your horse’s world – your tack, your haynets, your ring-feeders, your fencing – if this fails, does it fail safely? If not, sometimes it can be quick and simple to change that. A fail safe is often cheaper than what it can save you from having to replace.

    One of the most successful developments in this area is the safety cup (showjumping) or frangible pin (eventers). Gone are the days when even in showjumping if you came downwards onto a pole, such as a horse hitting the back bar of a spread, the only way that pole was going to shift was if you broke it in two (as often we did). Now cups are designed to release whichever direction you hit them in and I would encourage anyone to ensure that this is the type of cup they use in their competitions and at home. This release means that the cup also “fails” by hitting the ground and needs to be reset along with the pole, but as riders we already endure greater hardships than this. Horses do not need to hit their legs hard to learn to be careful, and jumping should be about the confidence to make mistakes, not a high-risk sport. The rotational fall is our greatest cause of serious injury and could yet be eradicated – the horse should never strike a solid enough object to be thrown into a cartwheel.

    If release is not an option, our second defence for injury prevention is to dissipate the incoming force. Crumple zones in cars make modern vehicles rather easy to dent, but by folding up in a predetermined way the car protects the central passenger section from the worst of the blow. Someone else explains that here

    Your helmet is designed along the same lines to protect your head by self-destructing to absorb the blow. It’s got a pretty case around the outside so sometimes you can’t see the damage but still if you bash it you need to replace it. Body protectors on the other hand work by being hard, and saving your body from minor injuries and fractured ribs. They are not a fail safe. They won’t actually protect your spine or prevent internal soft tissue or crush injuries, that’s not what they’re designed to do (e.g. Mills and Gilchrist, 1990Kelly et al., 2004). The utterly misleading misnomer “back protectors” and their compulsory use in some equestrian disciplines has rather dented any development or acceptance of the spinal protectors seen in other sports. There are plenty of people who tell stories where “without my back protector I would have had a spinal injury” but at the moment the evidence doesn’t support that. Various companies are trying to improve safety and create body protectors that can protect your spine. There is evidence for the need for better safety gear – particularly supports for the cervical spine – and only greater public awareness will help get these products developed.

    I jump in a helmet/hat which is lightweight, flexible, vented and peaked. Those elements make it comfortable and beautiful, but give the manufacturers a nightmare job in making it sufficiently safe. My hat adheres to current safety standards, none of which address protection from rotational (brain-tearing) injuries, and those are the cases that would break your heart. These companies are the people we trust with our lives, yet bombard with our mostly fashion-based demands. We undermine them not just with our need for practical wearability, but with social media posts “exposing” hats which break into pieces – as many of the most safe are designed to do, in order to deflect the impact and save our heads. I wish every manufacturer every luck with their task.

  • Equine conformation : solid bones & moving joints

    Sox: externally rotated hinds, otherwise conformation just right.

    An endo skeleton is a skeleton
    that is worn on the inside. Some creatures, like beetles, have exo-skeletons
    armour-plating their outside, horses have endo-skeletons providing support and structure from within, framed around a backbone, which makes them vertebrates.

    Vertebrate bones are incredible piece of engineering.
    Designed to withstand forces from all directions whilst still being as light as
    possible. To do this, large parts of the bones have a honeycombed trabecular structure which has
    been much copied in man-made materials. Trabecular or cancellous bone is basically composed of a series of small beams, so there’s material
    where it’s needed, in the form of little supportive struts, and none where it
    isn’t needed, cutting down on any extra weight. The property that’s really,
    crazy, blow-your-mind clever, that we struggle to replicate in man-made
    materials is its ability to adapt. The much-quoted Wolff’s Law tells us that
    bone will adapt to the loads placed on it. That means that as long as you and
    your horse are alive your bones are constantly adding struts, thickening parts,
    and removing (reabsorbing) other parts. The whole system is constantly under
    reassessment.

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    Why do we need to care about this particular marvel of
    anatomical science? It means a number of
    things for your horse. It means that:

    a) Bones remodel to the strength we tell them that they
    need. This means that they need an advance heads-up. If you’re going to do
    something high impact, or have suddenly increased impact following box rest
    then BUILD UP.  By using repeated loading
    within the horse’s current capabilities you can increase bone mass and strength
    and hence stretch what is safe for him.

    b) Bones are strongest in compression, since that’s the
    direction they’re designed to load in. If they’re suddenly, unexpectedly loaded
    in a different direction, for example by a bending force, they can often just
    snap.

    c) Bones will do their best to remodel if not correctly
    aligned due to conformational defects, but usually this will mean bypassing the
    bone and putting the extra strain on the joint.

    Joints allow the skeleton to move.  They’re essential, they’re magical, they
    create the part of biomechanics that most people are the most excited about,
    and yet they are a terrible weak point in the system. The majority of
    orthopaedic problems originate at the joints. When we talk conformational
    defects we’re normally talking about joints. The bones are just the linkages
    that make the joints easier to see. The bones may be too long or too short, or
    headed off in the wrong direction, but that deviation originates and inserts at
    a joint, where the price is paid.

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    The joints are held together by collateral ligaments and
    joint capsules and usually move due to articulating surfaces. This means that
    it’s the collateral ligaments, articular surfaces and joint capsules that often
    fail, along with the tendons responsible for taking the strain when movement
    occurs.

    Whether the horse is still or moving, it has to cope with
    forces. If a horse stands on the ground, it is pushing down into the ground
    with its body weight. Have a horse stand on your foot, it hurts. Horses rarely
    stand on your hand. You can get kicked on the hand, sure, but then your hand
    moves out of the way unless the floor supports it. I’ve yet to see someone
    exert enough force with their hand to hold the horse up.  At the same time as the horse is squishing
    the ground, the ground is pushing back on it with an equal and opposite force.
    Sometimes it doesn’t and the horse just sinks into the ground, but usually,
    eventually, the ground pushes back hard enough that the horse can stand on the
    ground.

    We can measure this reaction force, the most confusing of
    Newton’s forces, using a force-plate mounted into the ground. This can tell you
    how much weight a horse is putting through an individual leg, by telling you
    how hard the plate is having to push back, and what direction it’s pushing in.
    In an ideal world we’d have one in every yard and vet clinic, telling us about
    the subtle changes in the way the horse feels and functions. Biomechanics is
    all about reactions to forces, and these are some of the very
    forces we’re interested in.

    Align these forces correctly with the bones, so they pass
    straight through the joints, and the skeleton functions at its most efficient.
    If a joint is not well-aligned, it will experience extra strain, and
    potentially disease and failure.

    Conformation

    Whether
    you’re choosing a new horse or trying to make the most of the one you’ve got,
    being able to judge conformation is a handy skill. No horse is perfect but if
    you’re aware of your horse’s weak points there’s a lot you can do to mitigate
    defects, maximise soundness and make sure he’s up to the job. Many aspects of
    conformation vary with breed and so some breeds may be more suited to one
    activity than another, as different equine sports have different requirements.
    However there are also a few basic conformation flaws worth watching out for in
    all ridden horses.

    As we’ve previously covered the
    horse’s skeleton is actually very similar to our own. In the horse instead of
    wrist we say knee, and instead of heel we say hock, but most of the bones and
    tissues are the same. The horse is adapted to be as light and fast-moving as possible,
    so he runs on his third fingernail/toenail, not the flat of his foot, and has
    lost all “unnecessary” bones, including all of the other fingers and
    toes. These adaptations leave a lot of bouncy joints for shock absorption, and
    a lot of scope for variation.

    Distal (lower parts of) legs

    To assess limb conformation
    you need a horse to stand well, and view him from the side, front and
    back.  Basically you’re looking for a
    straight, well-balanced leg, with no major twisting in any direction.

    Examples from the MUST HAVE book “Equine Locomotion” (Holmstrom Chpt, Back & Clayton Eds).

    Pastern length is one of the
    first aspects to check in the fore and hindlimb. If the pastern is too long the
    fetlock will flex more, leading to excessive strain in the tendons or their
    insertion points (such as the navicular or coffin bone). If the pastern bones
    are too short or “upright” there won’t be enough flexion at the
    fetlock for effective shock absorption. This means that if your horse has
    pasterns that are unusually short or long, then you should minimise high impact
    activities such as trotting on roads or a lot of jumping.

    Straightness in the forelimb

    In the front leg, a horse that is over at the knee has the
    appearance of a permanent knee bend, and this is not really that serious. A
    horse that is back at the knee looks
    like the knee has bent the wrong way. This causes additional strain on the
    tendons and ligaments that struggle to maintain posture and support the weight
    of the horse, particularly in jumpers or
    racehorses. For these horses it’s a good idea to focus on tendon strengthening
    exercises such as hill work (see previous posts).

    Hobo: straightness from the front, check. Ability to wear a rug, lacking.

    Pigeon toed (turned-in toes)
    and toed-out horses are common. Toed-out hindlimbs are present in 80% of
    warmbloods, so can be considered normal, and can even help with half-pass and
    shoulder in. Toes that don’t point straight ahead are still not ideal due to
    the increased stress to the lower parts of the limb, but not serious. Horses
    with toe-in or toe-out are often seen competing at higher levels and it’s not
    strongly associated with break down, although more extreme examples may cause
    problems. Base narrow, toe-out forelimb conformation can increase interference
    (brushing) injuries including splints so is often avoided in dressage horses.
    For all other activities the addition of brushing boots can go a long way to
    minimising this problem!

    Toe-in conformation is often
    seen with bench (offset) knees, which although common may predispose the horse
    to splints and fetlock problems. These horses need to avoid deep surfaces where
    possible.

    Toed-out hindlimbs are not
    the same as a cow hocks (narrower at the hocks). Horses who are only toed-out
    and not narrow at the hocks will present a vertically straight hindleg if you
    stand behind the point of the hock (and not behind the horse). Look at where
    the hoof is pointed, forgive the deviation and stand behind the heel and hock,
    then decide if the legs bend in at the hocks or merely point the wrong way. Sickle
    hocks are over-bent when the standing horse is viewed from the side. They do
    allow a horse to step under himself, but prevent him from being able to carry
    that weight effectively and so are rarely seen in elite dressage horses. Poor
    hocks, especially sickle hocks and cow hocks, have been associated with
    osteoarthritis, bone spavin and back problems, so in these cases it is worth
    avoiding occasions that cause a lot of strain – such as a lot of jumping, or
    very deep or hard surfaces. Whilst horses with poor hocks might not have the
    longest hunting careers, they rarely cause a problem in racehorses.

    Hobo has straight but externally rotated hindlimb. Not cow-hocked, but looks similar from this angle.

    On the other hand, in the
    forelimbs knock-kneed conformation may even be protective and has reduced the
    incidence of carpal fractures in racehorses.

    Remus as a slightly knock-kneed

    youngster (with poor hoof trim).

    Straightness in the hindimb

    As we reach the hoof, the
    research shows that as the heels become more ‘underrun’ (low heels and long toes), the odds increase of
    joint problems further up the leg. It is interesting that there is little
    evidence that hoof angles affect the likelihood of disease or injury, only
    evidence for the effect of hoof balance (differences between front and back).

    Head, neck, body, upper legs.

    Many aspects of conformation
    that relate to the head, neck and body are difficult to measure objectively,
    and so can lack scientific evidence, but breed differences in this area show
    the effect of selective breeding for different activities. Plough horses and
    racehorses look very different for a reason!

    There is currently no solid
    evidence linking shoulder conformation to injury, only performance. Elite
    showjumpers and dressage horses have been shown to have more sloping shoulders
    than average, and sloping shoulders correlate well with gait scores in young
    horse performance testing.

    It is worth remembering when
    assessing the slope of the shoulder or croup that in some horses the outward,
    muscular appearance does a good job of mirroring and representing the
    underlying skeleton, but in many horses it doesn’t. It can be helpful to place
    a piece of tape on the upper and lower parts of the shoulder bone to allow you
    to stand back and observe the actual line. However a seemingly long and sloping
    shoulder with good withers will place the rider in a good position in better
    balance with the horse, and so the appearance of the shoulder can be as
    important as its real slope.

    Judges often use terms such
    as “freedom of the shoulders” but high-speed analysis shows that
    differences in forelimb movements are mainly influenced by the elbow joint and
    not by the shoulder. Consequently a long humerus (upper arm bone) is strongly
    correlated with performance in dressage horses, but rarely remarked on.

    Elite dressage horses and showjumpers have flatter pelvises
    than average riding horses, however again many horses have a flat croup
    (muscles) and a steep pelvis (bone) so appearances can be deceptive. A flatter
    pelvis assists pelvic rotation, and this is the most important determinant of
    gait elasticity and jumping ability. On the other hand pelvic conformation does
    not appear to affect longevity in hacking horses, and weakness here is often
    compensated for somewhere else.

    In the hindleg, a long, forward-sloping femur (thigh bone)
    has been reliably and frequently shown to give both soundness and performance.
    When we say that a dressage horse should be well “camped under” this
    is the leg position that results from a forward-sloping thigh, which places the
    hind well under the horse, aiding collection, balance and power transfer. It is
    also possible to judge the femur’s position by marking both the point of the
    hip and the horse’s knee, to allow you to judge whether the thigh bone slopes
    forward or straight down. This is particularly important in hacking and riding
    club horses where vertical femurs have been linked to leg and back problems.

    Increases in height up to
    around 17hh are linked to performance in showjumpers and trotters but not
    dressage horses, and in all sports there is a massive variation in successful
    horses. Sadly increased height also
    comes with decreased soundness. Research confirms the adage that a short back
    is a strong, healthy back, and good for performance, but it also predisposes
    the horse to overreach injuries so overreach and solid brushing boots should be
    considered.

    Once we get to the neck, It’s
    hard to objectively judge the actual “set” (attachment point), given
    variations such as topline muscle, posture and wither height. A low set neck
    can make it difficult for the horse to lift the forehand and so higher neck
    posture is preferred for dressage. A longer neck can improve jumping
    performance, acting as a counter-balance to the hindlegs, but a shorter neck is
    common for dressage. Long necks can also increase fetlock problems, but only in
    horses that race.

    A wide throat latch (jaw) is
    thought to facilitate breathing, although there is little evidence on this.
    There is evidence that a wider-than-normal poll to throat latch distance is
    often seen in elite dressage horses and showjumpers, and thought to help with
    collection.

    Many frowned-on conformational variables, including being
    croup-high and lengths of cannon bones, do not affect the likelihood of injury
    or disease, in the research at least. It’s an odds game, all we can do is give
    ourselves the best chance we can, and then work with what we have. Other
    factors such as temperament are just as influential, and for every solid
    conformational rule, they’ll always  be a
    horse that beats the odds.

    Perfect horse. Dog needs work.

  • Video of a powerpoint show giving a general introduction to equine biomechanics, made from recycling some slides. Might be a bit dry, just trying something out. If it’s popular I’ll do some more and make them a bit more dynamic!

  • The Equine Back Part 3: Ridden exercises to build strength, flexibility and balance.

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    Previously we’ve covered how the equine back
    works in Part 1
    , which focussed on the musculo-skeletal structure, Part 2 went into
    unmounted exercises
    to increase balance, strength, range of motion and
    stability. Now to complete the equine back biomechanics series we’re going to look a little at ridden exercises and how to
    strengthen the back with your schooling.

     There are plenty of popular ways to build your horse’s back,
    topline and core muscles whilst riding – keep him engaged, ride up hills,
    shoulder in, work on transitions, do cavaletti. When it comes to why, how or
    what they actually do though things often get a little more patchy. In this
    part I want to cover what exactly these exercises do, which ones work, what
    muscles they target, how to get the most out of them, and how to design the
    exercises that suit you and your horse.

     As discussed in Part 1 carrying a rider is a massive challenge
    to the equine spine, and muscle activation is required to lift the horse’s back
    into a position where it can support a rider comfortably. If the horse attempts
    to carry the rider with the spinal column rather than the muscles, this will
    hollow the back and cause pain, and potentially spinal impingement and damage. In
    Part 2 we discussed trying to activate core muscles and to rotate and flex the
    spine to increase range of motion (flexibility), reduce spinal impingement and
    to build muscle strength, making it easier for the horse to round and carry a
    rider correctly. Then we looked at combining these exercises with challenges to
    the horse’s balance to make them more effective. In the ridden horse we have
    the chance to again rotate and bend the spine, through less of its range of motion,
    but this time with the added challenge to balance and strength of supporting
    the weight of a rider.

    As with the groundwork exercises the model for our ridden exercises is Meikle Rustler, a Welsh Section D who belongs to Alison Brown and is ridden by her mother Gillian Brown. Rustler and Gillian currently compete at medium level dressage.

    Walk

     Many people who have used a horse walker have been surprised by
    the amount of topline a horse can gain just in walk. In walk the horse’s spine
    is very mobile. It must bend in all three axes – flexing as it rounds and
    hollows, bending laterally to the side and axially, twisting along its length,
    and for all three types of bending its range of motion is dramatically higher
    at the walk than in the other gaits. This means that in walk the horse has an
    opportunity to address and increase his range of motion and flexibility, target
    and release the muscles that move the spine and by stretching the spine and
    hence opening up the spinous processes you can prevent and minimise spinal
    impingement.

     Walking actively, particularly up and down slopes tones the
    abdominal musculature and prepares the horse for increased engagement and more
    challenging work. Walk is also the ideal pace for exaggerated stretches, such
    as asking the horse to walk a five metre circle around a cone or imagined spot,
    with his nose very low on a long rein and an exaggerated bend, flexing to the
    inside and out, to target spinal flexion and mobility, helping to increase
    range of motion and loosen any tight spots.

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    Walking the circle. The
    spine twists along its length to allow the near hip to raised and the near
    shoulder lowered, bends in flexion, and laterally to the inside.

      Trot

     In trot the horse’s spine is mobilised with less range of
    motion than in walk. The spinal muscles are activated and the ventral core
    muscles such as the abdominals are recruited to control the movement. This
    makes trotting with a rider on board an excellent work out for equine back
    health. If the horse carries a rider correctly in trot, the muscles and spine
    should continue to gain in strength and flexibility.

     The addition of trotting poles or cavaletti increases the range
    of movement at the trot, so increases the intensity of the work out, balance
    challenge and stretching.

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    Rotating the shoulder in
    trot, whilst bending on a circle.

     Cavaletti

     Cavaletti is often used just as another word for trotting poles
    or pole work. Whilst it’s important for showjumpers, it’s also important for
    dressage horses, or any horse that’s planning to use its back to support a
    rider. Traditionally cavaletti were fixed poles suspended between cross-shaped
    wings, which could be rotated for variable height poles, but these days people
    mostly mean “getting the horse to step over things on the ground, in walk, trot
    or canter.” What it doesn’t mean is jumping, just literally stepping over poles,
    sometiems raised, usually in sets. Cavaletti/poles are great, they develop the
    paces, the rhythm, the balance, the cadence, whether you follow showjumpers
    like Scott Brash or dressage riders like Charlotte Dujardin and Carl Hester
    you’ll hear an exhortation to do cavaletti. However pole work doesn’t just give
    you a big rhythmic trot because the horse gets in the habit of picking his feet
    up, it actually improves muscle tone, balance and flexibility.

     Trotting poles or cavaletti in trot increase flexion in all the
    horse’s leg joints and increase the amount of movement through the horse’s
    back. This builds strength in the muscles and flexibility in all the joints, as
    well as aiding muscular control and coordination. Unlike using weighted boots, tactile
    stimulators or pastern weights, trotting poles also increase the amount of
    flexion at the hip, activating the horse’s hip flexors. Similarly horses do not
    have an ability to habituate to the poles, as no matter how many times they do
    them, they still need to clear the poles, whereas horses can learn to ignore
    pastern weights and other worn stimulators.

     The height of the limb flexions shown and the amount of spinal
    bending is proportional to the height of the trotting poles, and so these can
    be increased as the horse becomes more advanced and more confident in his
    visual coordination and synchronisation.

     A single pole or single poles scattered all over the school are
    constructive, but you can also get a more sustained work out by asking your
    horse to walk and then trot over sets of four or more poles. For a walk
    distance you need to move the poles in to be about 0.9 metres (a yard) apart,
    in trot they should be 1.2 metres (4 foot) apart. After that there is no real
    wrong solution with trot poles, you can use your imagination to create
    interesting patterns. You might start by placing four poles out evenly and
    change the rein after trotting over them to approach from different directions,
    and build up to riding a figure of eight with trot poles along the diagonals,
    and then even a serpentine with trot poles along each short side. You can miss
    out a middle pole, leaving a gap of 2.4m so the horse trots a couple of steps
    between poles, or ask him to follow the line of a curved set of poles. As long
    as the horse is trotting actively forward he will continue to improve his back
    strength and health whilst finding the work interesting and gaining confidence.

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    Charlotte Dujardin and Valegro,
    using cavaletti in the warm up at the 2015 European Championships (photo Barbara
    Schnell)

    Shoulder in, shoulder
    fore and lateral work

     In shoulder in the horse is asked to bend to the inside whilst
    continuing to travel forwards with impulsion, leaving the horse travelling
    “on three tracks” when viewed from behind. Shoulder fore is a similar
    exercise but with around half the amount of bend to the inside, making it a
    useful building block both in terms of muscle development and the horse’s
    education, confidence and understanding. These exercises are normally initially
    performed along a wall or rail, by maintaining the bend as you come out of a
    turn. The lumbo-abdominal flexion involved in shoulder in and shoulder-fore
    shorten and challenge the abdominal muscles, particularly the internal oblique
    and hence this is another exercise which is very effective in strengthening and
    rehabilitating the back. The horse builds his muscles as he uses them to stay
    in balance, and so it is better to achieve a small amount of bend in a balanced
    way than to push the horse beyond what he can achieve correctly.

    Once shoulder in is established further lateral work like
    haunches in, leg yielding and half passes can continue to challenge these
    muscles. As lateral work targets one side at a time (and should therefore always
    be done in both directions) it is particularly effective in muscle development.
    Lateral work targets lumbosacral mobility and hindlimb engagement (iliopsoas),
    the ability to lift the forehand (pectoral muscles), and the difficult to
    activate spinal control (multifidus muscles), and so it is often seen as a form
    of rehabilitation for the back, in both a preventative and curative sense. It
    does however put a lot of strain on the collateral ligaments around the pastern
    and hoof, so should not be overdone.

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     Hill work

     Hill work increases the challenge by making the horse work
    against gravity. Hills can be incorporated not just into aerobic fitness, but
    into schooling and muscle building exercises. For example you can ride a slow 15m-20m
    circles in trot on the side of a hill, asking the horse to lower his nose and push
    up the hill using his extensors of the hip and back (gluteal and paravertebral)
    and then control his balance against the slope when going back downhill using
    eccentric muscle contractions of the abdominal and hip flexors. For an advanced
    horse you might even put a pole or very small jump on the hill, and incorporate
    it into the slow 20m trot circle, and trotting poles on the lowest part of the
    circle to increase flexion and rhythm.

     Whilst this type of hill work comes highly recommended as a
    rehabilitation exercise for the equine back and core, and can greatly improve
    muscle strength and coordination, you shouldn’t underestimate how challenging
    it is for the horse and initially it should not be continued for more than
    fifteen minutes. I find this a nice exercise, without the poles, to incorporate
    into my hacks, just throwing in a quick trot circle or two on a slope, trying
    to keep the topline extended, before I charge off up the hill.

     Canter

     Canter involves the flexion and extension of the back (in the
    hollowing and rounding direction), but not the lateral bending or axial
    twisting seen in trot or walk.  Work at
    canter therefore does not have the same level of benefit of stimulating the
    deep multifidus muscles or increasing the flexibility of the spine or strength
    of the spine stabilisers as some of the walk and trot exercises. This doesn’t
    mean that you don’t need the same spinal strength to canter, just that canter
    alone is not the most effective way to build total back health. Canter does have
    a large amount of active lumbo-sacral flexion and so is useful in building
    strength in the abdominal and sublumbar muscles, which in turn support the back.

     In canter the abdominal muscles contract concentrically,
    shortening the rib cage and rounding the back. Depending on the leading leg
    either one oblique abdominal muscle or the other is the main support. As well
    as maintaining the flexion in the spine the abdominal wall muscles (rectus and
    oblique) cause the pelvis to tilt downwards, tucking the hind end under. The
    sublumber muscles (iliopsoas) flex the hip joint lending impulsion and further
    flexing the pelvis and back. Finally the thoracic sling works to lift the
    forehand. This means that whilst it doesn’t involve the same range of motion as
    trot and walk, a correct canter with the additional weight of the rider,
    requires a lot of strength and effort from the horse.

     In counter canter the abdominal and sublumbar (rectus and iliopsoas)
    muscles maintain the position and flexion of the hip, whilst the abdominal
    (oblique) muscles shorten the trunk, and so this requires a lot of strength and
    coordination from the abdominal girdle. Counter canter is a great exercise for continuing
    to build strength once the horse is sufficiently advanced, but if attempted too
    early it can cause tensions and rigidity which is counter-productive.

     Jumping is a very different movement from that of trotting over
    cavaletti, involving a flight phase, so whilst canter poles can be an important
    part of the horse’s education and muscle development, they are very different
    as muscle training exercises from trot poles. Canter poles are more similar to
    small bounce fences causing flexion of the spine and putting great demands on
    the muscles without requiring too much impact. Bounce jumps or canter poles
    selectively increase the strength of the thoracic sling and upper neck muscles
    through the abrupt loading and lifting of the forehand between the jumps. During
    the flight phase, spinal flexion comes primarily from the thoracic spine and
    lumbosacral joint, due to contraction of the abdominal and iliopsoas muscles,
    and induces stretching of the supraspinous ligament and erector spinae muscle which
    run along the top of the spine. This makes this an effective exercise in
    opening up the spine in this direction, but also means that the horse must be
    very well warmed up before bounces are attempted to avoid muscle or ligament
    strains. The hip flexors and abdominal muscles also work to provide propulsion for
    the poles or jumps, but these are most challenged by the increased engagement
    at landing in the bounce, required so the horse can begin to lift his front end
    before the hind end has landed, rather than the effort of take off itself.

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    In general if a horse is carrying a rider, his back is already
    working, and great progress can be made merely from hacking out in an active
    walk, and occasionally asking your horse to stretch down, and to flex left or
    right, to open up his spine. By including a variety of the exercises mentioned
    here, you should have a happy, healthy horse that continues to increase his
    ability to carry a rider, becomes more powerful and balanced, and either
    recovers from or prevents any back injury or soreness.

    Photography: Abby Cook Photography, copyrighted to Sian
    Townson.  
      

  • Unmounted rider exercises to improve your seat: Strengthen & straighten your own core.

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    So whilst we’re looking a little at strengthening the horse’s core, and before we get onto ridden exercises, let’s do the same for the rider. [Ridden exercises for horse’s core here, unmounted for horse core here]

    There’s growing research evidence that improving your seat off the horse is a great thing to do because a) it’s effective – who doesn’t want a better seat – and b) you can correct muscle patterns more easily when you and the horse aren’t encouraging each other’s asymmetries. Get your core stability correct, it’ll be easier to get your horse correct. You can spend hours fighting not to collapse at the hip, to sit straighter, deeper, drop your thighs down, toes in and get the horse engaged, to stay with him over jumps, but it’s never going to be as effective as just correcting your own muscle weakness before you start.

    Also in exciting news I broke my ankle and so unmounted exercises are quickly becoming my thing. A broken ankle is pretty common in horse riders so this should also help my fellow sufferers whose days are currently filled with repeating “can I ride yet?” I can’t get you back on the horse yet, but at least we can make sure that when you do you haven’t lost all semblance of riding ability, and might even have improved a bit. Might come in handy if your horse has been laying off while you recuperate!  

    Step 1) Caring: I haven’t broken anything, why do I need to strengthen my own core?

    The rider’s seat is an active process. “Sitting on a horse” sounds passive but an engaged seat requires a lot of muscle strength and coordination. Phrases like “go with the movement” are not that helpful as it makes you feel like you just have to find the right kind of wibbly wobby relaxation.

    Find something now: a bouncy ball, a sweet wrapper, anything lying around that you can put in your hand and trust to stay completely relaxed. Now, with your object on your palm, bounce your hand sharply up and down, and see how fast you can go whilst it stays in a deep contact by just going passively with the movement. How’s that working out for you? 

    Imagine an enthusiastic horse bouncing along in trot or canter. Gravity & relaxation are not enough to keep you in the seat when the moving horse bounces you upward. When the horse reaches the downward part of his bounce gravity will pull you back down too but only once you’ve completed your upward trajectory – shortly after the horse stops pushing you up. This means you’ll be catching up with the horse’s back, coming down onto the horse’s back as it starts to re-ascend, with a painful bump. Then he’ll tense up, you’ll tense up, we’ve all been there. Nasty. If you actually tried the bouncy hand exercise, you may have also discovered the urge to slow down to reduce bouncing. Or as we call it “lazy” or “behind the leg”. 

    You may have known a horse that can go the other way too – rush at a jump unless held by your core. You can try holding them with your arms, good luck with that! To be honest it’s hard to do anything with your arms until you have a stable core anyway, never mind keep your hands soft and following the horse in trot or canter or over a jump.

    We the ambitious riders who’d like to own happy horses, want even more than a deep seat that stays on the horse, we want to control our muscle use so that we can move with the horse, even shift our pressure and tension and use it as an aid. No other sport attempts to reach this level of fitness, strength and coordination by just doing the sport. We need to release muscles we’d naturally tighten and tighten muscles we’d not normally use. We need exercises.

    Step 2) Addressing the muscles
    Iliopsoas: Psoas & iliacus.

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    The iliopsoas group of muscles is the deepest & arguably the most important part of your core. It’s made up of the psoas major and iliacus. Most people can’t be bothered to say iliopsoas, so they say psoas (the ‘p’ is silent) and mean the whole group, leaving others to get confused and starting to wonder if iliopsoas is yet another muscle. Don’t let it bother you. Similarly some people get het up about psoas minor, but in bipeds (that’s you) it’s so small that it’s often absent, so functionally it’s not the place to focus. We’ll worry about psoas minor when we talk about a [four-legged] quadruped.

    Psoas (major) runs from the spine (lumbar vertebrae) to the inside of the femur (or thigh bone), so it flexes the hip and turns the leg out. Ditto iliacus, running from the pelvis to the same femoral attachment, having much the same effect. If you sit in a chair, car seat or anything that leaves you in that thighs up position for an hour or two, your iliopsoas shortens and contracts. So if you have or had a desk job rather than a sitting-on-horses job you’re likely to have issues here. You may even be sleeping for hours every night in a lovely cosy foetal position – or worse, with one leg bent. I’m pretty good at guessing someone’s sleeping position by looking at them on a horse. 

    If you contract your psoas sitting on a chair, you stay on the chair, albeit with back pain. If you contract your iliopsoas sitting on a horse, you end up with a forward-tilted pelvis, a hollow back (and a hollow horse), and a flexed and outward-turned hip. This means that you can’t get the thigh down or the knees to turn in, because your hip flexors and rotators are jammed on, and to avoid tipping forward you’ll try to sit up by hyperextending & bracing the back. You’re working very hard co-contracting muscles to fight yourself but all you can get is tense, stiff and nasty. Your horse is actually being asked to hollow and you look like a frog.

    Even within the very elite, Carl Hester for example has noticeably tighter iliopsoas muscles than his pupil Charlotte Dujardin and so has to work harder to get the same results.

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    If you’re really unlucky you spend a lot of time sitting in a chair asymmetrically. If you pull more on just one psoas, just on one side, you bend the spine & hence trunk to that side, collapse that hip and are left wondering why you just can’t sit straight on a horse.

    If you want to be able to move synchronously with the horse so, for example, in walk your pelvis rocks side to side as your horse does, allowing him to use his back then you need to use your iliopsoas correctly, from a relaxed state.

    The iliopsoas group are your most powerful hip flexors. If you’ve ever done knee ups or sit ups thinking you were strengthening your abdominals, chances are these are the muscles you were working. Good news is once you’ve released your iliopsoas muscles your abdominals and inner thigh will naturally strengthen as they’ll actually have to do some of the day-to-day work themselves.

    ironically most people’s iliopsoas are both

    both tight and weak, because they’re not using the full range of movement. There are lots of exercises online for strengthening the iliopsoas/psoas. Don’t do them. First we want to lengthen and release. There are a lot of yoga videos online on “psoas” release and most of these are very useful.

    As the iliopsoas is so close to the diaphragm just breathing can help, and that’s one of the reasons that breathing correctly has such an effect on your horse. Similarly if you tilt your pelvis posteriorly, as if you were trying to tuck your bottom under you and round your lower back, your psoas will already start to stretch and you may feel any lower back pain ease.

    It’s very hard to stretch a muscle before it’s warmed up or contracted (despite older advice telling you to stretch before you start exercise) so the best way to start with your iliopsoas is to lie on your back, bring one bent knee up to your chest so that the hip flexors are really short and active. In that position hollow and round your lower back so that you can really target the muscles. Then slowly lengthen your leg out from there until it is flat on the floor and you’ve stretched as tall/long as you can be. Hold for a few seconds. Repeat this a few times on both sides, seeing if you can feel a longer stretch each time.

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    The second exercise to try is half kneeling and is a little similar to a lunge. Kneel on one knee with the other foot on the floor in front of you, as if you’re going to propose. Then keeping your body upright try to push forward slightly onto your front leg opening your trailing hip to leave the bent leg behind you. This is close to the crescent lunge in yoga, and stretches the iliopsoas of the trailing leg. Same effect can be reached standing up, by putting the front foot on a box/wall/sofa, if like me you find quick standing exercises easier to con yourself into. Just please don’t fall over.

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    With both exercises repeat 2-4 times both sides, 3 or 4 times a week or as needed.

    There are plenty of variations of these and other exercises. It’s ideal to just to think about where the muscle is, and just move in a way that stretches it within your own current ability.

    Abdominals

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    The abdominal muscles get a lot of attention: they’re right on the surface, make your clothes look good and more importantly for us they’re certainly a big factor in making a rider effective. The effortless riders that seem to be doing nothing are using a lot of abdominal muscle strength. Go on, scroll back up to have another look at Charlotte, relaxed but certainly not passive, using a massive amount of abdominal tone to keep Valegro off his forehand and her own body in an effective position. This, along with the pelvic floor, is what is helping pull her down into the saddle even though her horse has pushed her up, and keeps her still so her aids are clear and hands independent.

    The tricky part in trying to strengthen your abdominals is that many traditional exercises make it easy to cheat and just use your iliopsoas muscles, leaving you with even more back ache. We’re already great at shortening the iliopsoas, and it’s making us sucky riders. So instead of sit ups and crunches let’s engage core stability and make the abs work in a targeted, lengthened position.  If you don’t have a broken ankle you can start the infamous plank – on your hands and knees or hands and feet, as straight as you can as if you’d just completed a push up, but just hold it. Start with ten seconds or two minutes, whatever feels right. Tomorrow you can go ten seconds longer. It’s important to stay within what feels comfortable as if you try to hold it for too long you’re likely to lose the straight back, neutral spine position, and won’t be targeting the muscles as well as you could. If you’re not ready for a full plank you can always use an incline – arms on a sofa or even the wall rather than the floor. 

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    The second exercise to try is similarly starting on your hands and knees, straight back, knees directly below hips. Then lift one hand and one leg straight out and hold it. As with the horse’s exercise the abdominals are working dynamically to keep you stable and balanced, making this a very effective exercise. Similarly if you lift one leg from the plank pose you’ll add a lot of extra challenge to the exercise. In both cases don’t forget to switch and work both sides!

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    Good news

    The great thing about core muscles is that they are unusually quick to train, and not too hard to maintain. The hard part is just the getting started, and you should see results as quickly as the second week.

    There is a little more to say about core strength and stability but as ever I’ve already gone on long enough and both family life & paid writing are calling, so I’ll return to this topic in a Part 2. Worth mentioning though, that whilst I’ve used dressage pictures, the core is particularly relevant to the showjumper as it is what keeps you in balance over a jump in a fold. If you struggle with getting ahead or behind your horse, over a jump or in any discipline, or getting him to engage or respond to your aids, a lack of core stability is usually to blame. Ditto ending up exhausted and out of breath when you ride. Often people are just tired because they’ve mostly been fighting themselves. But now we’re going to fix that. Yey us.

  • The Equine Back Part 2a: Core strength, flexibility and balance.

    The previous post covered a fair bit about the back’s structure, bones and the issues of carrying a rider. Now I’ll go a little more into the function of the soft tissues and groundwork exercises (keep scrolling) and eventually in Part 3 we’ll get to more on spotting and addressing asymmetry, ridden exercises, and my personal favourite cavaletti.

    Musculature

    The muscles of the vertebral column can be divided into those running deepest next to the spine, including the multifidus, and those nearer the surface, including the longissimus and iliocostalis. The deepest multifidus muscles run along 2 or 3 vertebrae each, overlapping all the way and connecting the vertebrae to provide support, stabilisation and motor control. They have a lot of innervation so give the feedback that keeps track of spinal position and motion. The more superficial muscles are larger, less innervated and provide gymnastic motion – extension, rotation and lateral motion of the spine. As we covered in Part 1, the interlocking of the vertebrae means that the spine doesn’t really have the ability to bend laterally without also rotating, so these movements require the entire spine, and very little bending at any one single joint.

    As well as these muscles that run along and above it,  the spine is supported by the ventral muscles running beneath it (flexors) including the abdominal muscles and the sublumbar muscles (iliopsoas muscles). By finding an equilibrium between the two sets of muscles the horse is able to move efficiently by holding the spine in enough tension to support a rider and transfer power from the limbs.  The pelvic stabiliser muscles such as biceps femoris and the gluteal muscles help with balance and power transfer from the hind legs and are essential for collection and jumping.

    Finally the thoracic sling muscles, such as the trapezius and pectorals, hold the forelimb onto the trunk, and hence when the forelimbs are on the ground can affect the position of the trunk.

    If only one side of the thoracic sling is active the position and straightness of the shoulder is affected. Muscle tension through both sides at the same time lifts the withers and sternum, and helps create an uphill horse, lifting the weight off the forehand and rocking it to the hind end.

    The thoracic sling is also anchored to the rib cage and used in breathing. This is fine when the horse is still, but when the horse is cantering, for example, he must breathe in time with his stride, and hold his breath when he jumps. Imagine then the problem of a horse trying to relax but not ridden in an regular rhythm.

    The model for our groundwork and ridden exercises is Meikle
    Rustler,  a Welsh Section D who belongs
    to Alison Brown and is ridden by her mother Gillian Brown. Rustler competes at
    medium level dressage and practises stretches and groundwork exercises
    frequently and so has a large amount of muscle tone, making it easier to spot
    his muscles activating in response to the activities. Here are some sample pictures of Rustler, who I’ve failed to stand square. I hope they give you an idea of how you can spot these muscles activating during the groundwork exercises discussed below these pics. 

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    Standing ready to
    start with muscles relaxed.

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    Thoracic lift

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    Stretching

    Groundwork exercises

    There’s a lot of support in the research for using groundwork exercises to strengthen the back and mobilise the joints both before introducing ridden work to prepare for carrying the weight of the rider, and throughout the career, particularly after injury or time off. They help to improve strength, self carriage, balance, flexibility and the stability needed to collect or jump.

    Injured or weak back muscles often do not self-correct and need to be specifically targeted or the horse will attempt to find other ways to compensate, usually by overusing the opposite side, increasing their own asymmetry rather than addressing it. Groundwork exercises can build these muscles back up. Similarly stiff joints and the spinal impingements can often worsen due to continued contact if the joints are not adequately opened and stretched, and range of motion maintained. In the more advanced horse these exercises can improve balance and power needed for collection or jumping.

    Groundwork exercises can be roughly divided into three types: mobilising the joints (horse yoga),  activating and strengthening core muscles (horse bodypump) and improving dynamic balance (horse pilates). All three are important for a healthy horse. A young horse that hasn’t yet carried a rider, or a horse recovering from injury, would benefit greatly from building up his muscle tone and spinal alignment first but should be careful not to push it too far. At the other end of the scale a horse competing at high-level dressage will need to continue to build these muscles unmounted, but will need to increase the difficulty of the exercises to really challenge his muscles and balance.

    Mobility (Stretches)

    When a horse is challenged to stretch his spine it opens up the spinous processes and reduces the risk of impingement, and builds the small multifidus muscles that control and stabilise the spine, but often become wasted or uneven as they are not easily activated. 

    It’s common when doing these exercises that a horse find one side easier than another, and that’s OK, that’s partly why we’re doing them. Better to stay within the range of motion the horse can achieve correctly, then push him too far and encourage him to cheat by stepping or tilting his head. Keep an eye that his ears stay level, and accept that his flexibility, strength, balance and symmetry will improve with repetition. It is not normally worth forcing a horse into a position using manual pressure, as the horse needs to use his own muscles in order to strengthen them, and you risk pushing the horse beyond his current comfortable level of movement if you force it yourself. As with yoga, each stretch should be slow and relaxed, and aim to hold the end position once it’s achieved for a few seconds.

    Using a carrot stick or other favourite bait the horse can
    be asked to follow the carrot and do the following stretches. Firstly, start
    with the stretches which stimulate flexion of the neck muscles, work  on his rounding and abdominal muscles and
    extend the spine, opening up the processes.  

    Using the carrot he should be tempted to:

    1) bring his chin to his chest,

    2) bring his chin down to and/or between his knees and

    3) bring his chin down to and/or between his fetlocks.

    Start by aiming just to ask the horse to reach towards these
    positions, and then with a bit of practise you’ll be able to go further into
    the stretch, for example moving his chin between and beyond his knees rather
    than just towards his knees. If necessary having a helper put a hand on the
    noseband will encourage the horse to keep his head straight, but remember to
    tempt him rather than pull him into position.  

    The second type of stretch are the lateral bending exercises.
    These show up asymmetry and further challenges the spine stabilising muscles
    and the horse’s rounding and bending muscles. These can be tested by asking him,
    by following you with his nose, to one side and then the other,  from the front to reaching backwards and
    downwards to:

    4) bring his chin to his girth,

    5) bring his chin to his flank and

    6) bring his chin towards his hind fetlock.

    It may be helpful to stand next to the horse and ask him to
    reach around you to encourage an even bend through the neck and spine. These
    exercises can be very revealing as without the added complications of a rider,
    and with the motivation of a carrot or other treat, it is much easier to see if
    there is a marked difference between the left side and the right. If you have a
    helper it can be useful to have them stand at a safe distance behind the horse,
    ideally on a stool, to see if the horse bends evenly through his body to both
    directions. If you’re not sure if there’s a difference then they’re probably
    isn’t, but it helps to take a photo of each direction to help compare them.
    Occasionally you’ll see a horse who tries to keep his body straight and just
    use his neck on one side, but is happy to bend his entire spine in the other
    direction. This is the type of sign of injury or soreness from saddle fitting
    or ridden work that may needs further investigation and is worth highlighting
    to your vet in the first instance. Every horse will however prefer one side to
    the other, particularly if he’s not been challenged to build these muscles
    before. An uneven ability to each side but with similar technique is not
    necessarily any cause for concern and should improve with practise as these
    exercises will greatly increase his range of motion. The horse may initially
    attempt to “cheat” by stepping around to face the carrot that he’s
    reaching for. It is not worth over-correcting this, after all it’s a fairly
    efficient solution to the problem of needing to stretch and wanting to reach
    the carrot. Just patiently put him back into position and start again, using a
    wall or second person to help hold his hind end still. One he realises which
    behaviour wins the carrot he’ll be more compliant in future and eventually
    you’ll be able to work in the field, and won’t need to keep lining him up with
    the wall.

    There are entire books on carrot stretch technique, and they give you an insight into the most accurate targeted activation of specific muscles, but be encouraged that if your horse is moving under his own muscle power whatever you’re doing you will not be hurting him. Even if your technique is different from the next person’s, or doesn’t target the muscles you had in mind exactly as accurately as it could, your horse is still benefiting from doing a stretch.

    image

    Correct rounding

    image

    Rustler “cheats”
    by stepping forward and tilting his head. He still achieves rounding but he has
    reduced the difficulty of the exercise.

    image

    Lateral bending to the flank. Here we
    have a little too much twisting of the neck, whereas ideally his ears should be
    level with each other.

    Balance

    When a horse is forced to keep his balance against a pushing
    hand or due to a lifted leg, he must work his core muscles correctly to
    maintain his position, just as we would in a sit up, pull up or push up. Young
    horses can even struggle to even keep their balance when one hoof is lifted,
    and this can be interpreted as irritability at having hooves maintained when
    often it is just anxiety combined with a lack of muscle tone and experience
    with this sort of exercise.

    If the stretches listed above are combined with a lifted
    hoof the horse must work to keep his balance, further activating his core
    muscles and improving his muscular control. This increases the difficulty of
    the exercises so should only be introduced once the horse is already
    comfortable with the stretches, and is used to having his hooves picked out.

     A hand pressed on the horse’s shoulder or chest for a few
    seconds will force him to work his core muscles to maintain his balance. You
    may not see him move as you press, but if he’s working correctly you should
    notice him rock forward again once your hand is gone. In the advanced horse,
    like Rustler, you can combine this with a lifted hoof to increase the
    difficulty. You can lift either the front or back leg, but always push towards
    the tail, or the opposite hind hoof.

     At the other end gently pulling on the tail to one side then
    the other can force the horse to resist using (and building) his pelvic
    stabiliser muscles. The pelvic stabilisers are the muscles that allow the power
    to be efficiently transferred from the hind legs, and help to keep the horse
    balanced and off his forehand. As with the chest press, the aim of this
    exercise is not to move the horse, but to encourage him to activate his muscles
    to keep his balance and resist the movement.

    image

    Rounding with a lifted hoof.

    image

     

    Balance exercise, pushing
    on the shoulder with a lifted hind leg.

    Strength

    For further strengthening work of the core muscles, you could look to sternal lifts and “butt tucks”. 

    If you run your hand, pressing quite hard, along the sternal ridge that is the central line running underneath the horse between his forelegs, past the girth, and back towards the back of his stomach, you should see the corresponding parts of his back lift as he tightens his core muscles. In a less toned horse the difference is less obvious you should be able to see some effort from any horse. The amount of pressure required varies, particularly the first time whilst he works out what you’re on about. You’ll know when you have it right. On some horses it can be easier to use the blunt end of a
    hoof pick rather than fingers to increase the targeted pressure to start with. Rest
    assured that you are not hurting the horse, particularly if he hasn’t yet
    responding by moving away from the pressure. 

    Activating the sublumbar and abdominal muscles to tuck the hind end under is an excellent strengthening exercise but can take a bit of trial and error. Stroke up the spine from the top of the tail with your thumb until the horse lifts his back, engaging his hindquarters. In an advanced horse you (and a friend) can do this at this same time as lateral bending and/or the thoracic lift. As with the previous exercise, you will be able to spot a
    reaction when you get it.

    In the very strong advanced horse you can combine these exercises with the balance exercises above, by lifting a hoof or adding a backward push.

    image

     
     
     
     
     
     
     
     
     
     
     
     

    Thoracic lift

    Your horse may look at you with great confusion when you
    start doing all these exercises, but they usually figure out what is required
    fairly quickly. I find that in my horses, once they’ve tried the exercises and
    come to associate them with treats, they are very enthusiastic about them. Mine
    even occasionally offer an unprompted stretch in the hope of winning a prize.
    You may also find that as your horse gets more experienced you can then do
    several stretches to the reward, rather than having to load up on so many carrots
    or pieces of his dinner.

    I’ll post a photo series with more detailed guidance on groundwork exercises for people who are interested soon. I’m waiting for a magazine article or two (by me) to come out first so that I don’t scoop myself. In Part 3 I’ll cover ridden exercises, asymmetry and cavaletti.

    Photography: Abby Cook Photography, copyrighted to Sian
    Townson.
       

  • Today I’ve been sorting through old photos and came across these microscope shots of grass from a nutrition internship I did (in 1999) at the Roslin Institute, part of the Edinburgh Royal Dick Vet School and home of Dolly the Sheep. The superman-logo shaped ovals are stoma, but the dog-bone and four-leafed clover shapes are

    Phytoliths – tiny lumps of silica, the same substance that forms the basis of sand and glass. This is what horse’s teeth are evolved to combat, the reason they need to be long. When the tooth’s surface is ground down new tooth can take it’s place, but without this sandpaper teeth will continue to “grow”, and gain sharp edges. Being tough lumps the phytoliths survive into hay, but aren’t present in pellets, hard feed, or some low calorie options. There are lots of reasons that horses need access to grass and/or hay, but dental health seems to be one that’s often overlooked.