A new device for estimating active drag in swimming at maximal velocity

Article Abstract:

The active drag during maximal velocity swimming is measured with the help of a new device based on the assumption of equal useful power output in two cases, with and without a small additional drag. A gliding block is employed to provide an adjustable drag, which is attached to the swimmer and measured by a force transducer. It is concluded that the device is a useful tool for measuring and studying active drug.

China, Measurement, Swimming, Inertial measurement units

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The physiological cost of velocity coupling during tennis groundstrokes

Article Abstract:

The physiological cost of velocity coupling during the tennis groundstrokes is determined. The results have shown that velocity coupling has affected tennis groundstroke behavior and has indirectly modified the concurrent cardiopulmonary and metabolic responses.

Psychological aspects, Tennis players

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Contributions of upper limb rotations to racket velocity in table tennis backhands against topspin and backspin

Article Abstract:

The contribution of racket arm joint rotations to racket velocity in table tennis backhands against topspin and backspin is analyzed. The varied impact of elbow extension and wrist dorsiflexion in backhands against topspin and backspin is discussed.

Physiological aspects, Extremities (Anatomy), Table tennis players, Rackets (Sporting goods), Tennis rackets, Structure

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