We like to start the bilateral jump progression with the Box Jump. Being the first step in the progression, we recommend starting with the box at mid-shin height. Ideally, use a soft box, such as a gymnastics box, instead of a metal box. The focus here is teaching the young athlete to land efficiently on a soft platform.
Exercise 1: Box Jump
Stand in front of the box with your feet hip-width apart. In a smooth movement, swing your arms back as you squat down to a 1/4 squat. At this point, without a pause, swing your arms forward as you extend from your ankles, through your kness and hips to jump onto the box. Land softly on the box with your feet hip-width apart, a slight bend in your knees and knees in-line - that is, not caving in toward each other. Do not land with your knees locked out. Stand up from this position. Step down slowly from the box. Reset at the start position, then repeat for the prescribed reps. Since this progression is being using for teaching purposes, these reps are not continuous reps, but rather single reps. At a later stage in the jump progression, it may be pertinent to work on continuous reps to enhance power endurance.
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