The purpose of this study was to compare the electromyography (EMG) activity and ball velocity between one forehand drive performed in quasi-static stance (QSS) in the cross-court direction (CC) and one forehand drive performed with a dynamic frontal weight transfer stance (DS) in the inside-out direction and the ball velocity between both stances. The EMG activity was recorded in five muscles of the upper limb in one high-performance tennis player. Six forehand drives in QSS in the CC direction and six in the IO direction were selected for analysis. Results demonstrate a higher activation of most of the selected muscles in the QSS except for the triceps brachii (TB), moreover, the QSS presented higher ball velocity. This study could present a deeper comprehension of the muscle activation intensity, thus, helping coaches and health professionals.
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