05/26/2024
From Jean Luc Cornille:
Nucleus
Giving clinics worldwide, I see riders using all types of saddles. I observed a clear relation between excessive motion of the rider’s lumbar vertebrae and deeps seat, high cantle, and large thigh blocks saddles. The problem is worse when the saddle squeezes the rider between the high cantle and the thigh blocks. When I suggest that the high cantle saddle alter their ability to nuance the tone of their lumbar and abdominal muscles, I often see an emotional and hostile reaction. Marketing propaganda makes them believe that the deep seat and high cantle ensure their stability. When emotion overwhelms reason, there is no need to argue. I just hope that the rider will mature before pathology develops.
Muscles absorb a large amount of energy. It is one reason why I ride in a low cantle, sober knee pads saddle. When artificial support of the high cantle and large thigh blocks fool the tone of our gluteus maximus, upper thighs, and psoas muscle, we cannot refine the subtle nuances of our body tone.
While riding a horse, our vertebral column is compressed between gravity acting downward and upward forces from the horse’s movements. Recent studies have observed a pattern of intervertebral disc herniation where the nucleus tracks through the annulus. Previously, the herniation pattern was associated with flexion. Further research found that the damage relates to alternative flexions and extensions of the vertebral column under compression.
The rider’s vertebral column is under compression and submitted to successive flexion/extension of the vertebral column. Muscles absorb a considerable amount of energy and are thus critical to preventing overloading and stabilizing joints. The buffering of mechanical forces is so essential that the energy produced by normal walking would tear all the ligaments in the knee if it were not absorbed by muscular activity. (Elizabeth W. Uhl, DVM, Ph.D. Dip, DACVP and Michelle L. Osborn, Ph.D.)
A primordial work of the gluteus maximus, upper thighs, and psoas muscles is absorbing forces, protecting our lumbar vertebrae from excessive movements. Long before the research on tensegrity reached its actual level, I observed by experience that the ability to adjust the tone of my back and abdominal muscles related to the tone of my glutes and upper thighs muscles. I made the same observation while working with numerous students. Fascia can be more or less tight or loose. I saw students more comfortable on slightly deeper saddles than the one I use. Still, in a large percentage of the cases, the saddles squeezing the rider’s seat between high cantle and large thigh blocks cause excessive motion of the rider’s lower back.
Jean Luc Cornille