During the acceleration phase of a tennis serve, the lower extremities muscles reach peak activity levels before the upper extremity muscles.

Question

Quizplus · Accepted Answer

This is true. The lower extremities muscles, such as the glutes, quadriceps, and calf muscles, are responsible for generating the initial force and momentum needed for the tennis serve. This allows the upper extremity muscles, such as the shoulder and arm muscles, to follow through with the motion and generate power for the ball.

During the Acceleration Phase of a Tennis Serve, the Lower