Fig. 7
From: Jumping performance and muscle–tendon characteristics of Maasai men of East Africa

Muscle fascicle behavior during repetitive jumping. (A) Ultrasound image showing GM fascicle and aponeurosis tracking of one participant. The red area marks the region of interest. Yellow lines mark the fascicle and lower aponeurosis tracking. (B) Representative fascicle length (dashed line) and pennation angle (solid line) of the contact phase (0–100%) during maximal RJ of one participant.