Split jump (exercise)

A split jump is a form of exercise which focuses on the upper leg muscles, especially the quadriceps:
 * 1) assume an upright squatting position with one foot forward and the other back
 * 2) with a jumping motion, simultaneously move the rear foot forward and the front foot back, ending as position 1 with the feet reversed
 * 3) repeat

The exercise is often used in soccer training.