Quoting from ITF "Biomechanics of Advanced Tennis", Bruce Elliot, et al.
Groundstrokes use Ground Reaction Forces and Trunk Rotation. The square stance uses both, the open stance only the latter.
It seems to me that extreme push off with the rear foot (and the body lifting up) could be a consequence of extreme horizontal linear momentum being generated.
They go on to say that there is not enough research on the whole subject.
Groundstrokes use Ground Reaction Forces and Trunk Rotation. The square stance uses both, the open stance only the latter.
Like in the serve, the linear momentum during the groundstrokes begins with a Ground Force...studies have shown that players shift their weight from back-foot to the front-foot prior to impact as they push-off with the back foot. This weight transfer and push-off with the back-foot is primarily used to generate horizontal linear momentum in the direction of the shot.
They go on to say that there is not enough research on the whole subject.
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