Stability Ball Leg Curl - You could hook your feet under something and do glute/ham raises on the floor.
Stability Ball Jacknife - Do you have a place to hang from? Do hanging leg raises. If not, do V-ups on your bench.
Back Extension on the Ball - Prone Ys, sometimes called airplanes or supermans, done face down on the floor.
Those are just some possibilities. Do you think those would work?
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Lisa Holladay, CSCS
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