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Jumping into Plyometrics: 100 Exercises For Power & Strength
by Donald A. Chu
See all pages
with references to "Action Jump".
Excerpt - on Page 83: "
... and bend the front leg 90 degrees at the hip and 90 degrees at the knee. Action Jump up, using arms to help lift, ... "
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Crucial Confrontations
by Kerry Patterson
See all pages
with references to "Action Jump".
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