S1 | External Rotation Isometric (ball) - Supine |
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EXERCISE USE
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INSTRUCTIONSLying on your back with your arm out at 90 deg abduction. Place the soft ball under your wrist and slowly push back into the ball to maximal (below pain). Hold isometrically for 10sec-30sec as directed, with a 5-10sec rest in between repetitions |
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