This horse has been energetically driven onto the bit. As a result, he is traveling heavily on the forehand. The elevation of the pelvis associated with the pushing action of each hind leg is very apparent. The forelegs are unable to propel the front end of the horse’s body upward and the pushing activity of the hind legs is heavily loading the front legs. Frame by frame, the elevation of the croup associated with the pushing action of the hind legs is even more obvious.
This was not due to the horse’s lack of athletic abilities but simply bad training techniques. 45 minutes later, the horse is perfectly capable to produce proportional upward propulsive force of the forelegs. Frame by frame one can clearly see the upward propulsive activity of the forelegs lifting the front end of the horse’s body in proportion with the elevation of the croup. Jean Luc Cornille
Science Of Motion