Spring Time Tips
Riders understand the importance of warming up as a way to ready
the horse's mind and body for the challenges ahead, but there is more to a
warm-up than simple preparation. Correctly done, prior exercise substantially
benefits physical performance and helps prevent injury.
Oxygen Availability
There are many different things that happen when a horse is warmed up. The
warm-up gets the heart rate going from a resting state. This can occur nearly
instantaneously. During warm-up the horse's spleen contracts, and this releases
red blood cells, that are responsible for transporting oxygen. More red cells
mean an increased oxygen-carrying capacity. The more oxygen the animal can
carry, the better the performance. Horses are unique in their ability to store
red blood cells in the spleen. When horses exercise, the packed cell volume
(PCV, the amount of red blood cells in a blood sample) can jump up to 70%.
This splenic contraction aids in the inborn "fight-or-flight" survival
response so that the horse can sprint away from danger and sustain his speed for
a long period of time. For horses, the warm-up naturally taps into this readily
available source. By warming up, the release of red blood cells is complete, and
they are fairly well distributed in circulation. You shouldn't be dependent on
the splenic contraction to occur at the start of exercise, because there is a
little bit of lag time between the start of exercise and when the contraction
occurs and the red blood cells are distributed uniformly in the blood.
Body Temperature Alteration
The warm-up also increases the horse's muscle temperature. When we exercise we
use different fuels within the body, such as glycogen and glucose. When they are
utilized heat is also generated, which can raise the body temperature. Certain
enzymes in muscles work better at higher temperatures. However, if the core
(body) temperature gets too high, the body will shut down. Small increases in
temperature of the muscle will allow for the enzymes in the muscles to work
efficiently. Another benefit is that the hemoglobin (the iron-containing pigment
in red blood cells) functions in oxygen transport more readily at higher
temperatures within the muscles.
Energy Preservation
Energy stored in the muscle in the form of glycogen is used the most during the
initial stage of exercise. Humans and horses are the same in this respect. There
is only so much glycogen stored in the muscle, and if none of the other warm-up
benefits we mentioned earlier have begun, the muscle fibers use glycogen for
energy first.
You will want to minimize how much muscle glycogen you use right away. If you
don't warm up to enhance the usage of glucose in the blood, you will run out of
gas quickly. You want to warm up gradually so the circulatory system can adjust.
Warming up slowly gets the glucose into the blood and saves the glycogen, which
is an easy energy to get to, so you want to save it for as long as possible.
Musculoskeletal Benefits
Every stride a horse makes impacts the tendons. When a horse takes strides
during the warm-up process, the collagen molecules in tendons pack together and
water is redistributed within the matrix, decreasing the tendons' stiffness.
Warming up allows the tendon to stretch to a greater degree without injury.
Warming up also increases muscle strength. In human weight lifting, the athlete
is able to life more after the first repetition. Like-wise, a horses' muscle
contraction strength is increased by virtue of stretching out during the warm-up
stage.
The best method of warming up is unclear. In the past, trainers and riders
have adapted warm-up techniques from tradition or industry standards rather than
scientific fact. Ultimately the type of warm-up is the rider's choice because he
or she knows the horse best. You have to trust your experience. It varies so
much between horses and between disciplines. One horse might only need a walk,
trot, and canter to get the physical benefit, where others need more to get
their minds focused on the task at hand. Knowing your horse is important, and so
is realizing that warming up is both a mental and physical task.
Golden Rule of Warm-Ups
. Warming up for too long saps energy reserves that should be saved for
competition.
. Warm up smart: An out-of-breath horse likely has used up energy reserves
of glycogen that would have been best reserved for competition.
. Avoid overheating the horse. If the horse is too hot, its systems will
shut down.
. The oxygen delivery system must be prepped for peak performance. This
effect can be lost if the interval between warm-up and competition is too
long (more than 10-12 minutes).
. Warm up the tendons and muscles to avoid injuries.
. Make sure the horse is mentally prepared and focused.
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