Figure 7. (A) Pelvis range of motion (ROM) from the maximal lateral flexion/rotation/tilt position until the impact position in the 3 planes (frontal, transverse, sagittal). (B) Maximal angular velocity of pelvis girdle in the 3 planes (frontal, transverse, sagittal). Each plot represents one of the 3 best serves of a player. Each symbol represents a different player. We express means of player and group as degree (°) and degree per second (°·s^–1). Values for the player (n = 1; black) and the group (n = 5; grey).