Moving on from the isometric hold version of the 90 degree Clam can lead you to the isotonic version where you are moving through range. This version requires thoughtful application and concentration on form as it is very easy to end up driving the movement from the bottom leg, which may sound odd however due to the fascial connections through and across the hips and pelvis , the can be utilised to generate tension that the moving leg can use to create movement.
Clam 90 degrees
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