In vivo behavior of vastus lateralis muscle during dynamic performances

  title={In vivo behavior of vastus lateralis muscle during dynamic performances},
  author={T. Finni and Shigeki Ikegaw and V. Lepola and P. Komi},
  journal={European Journal of Sport Science},
  pages={1 - 13}
Length changes in vastus lateralis fascicles were measured in vivo using ultrasonography during one-legged squat jumps (SJ), counter movement jumps (CMJ), and drop jumps (DJ) in the sledge apparatus (n = 9). Patellar tendon forces were recorded simultaneously with an optic fiber technique from 4 subjects. Fascicle length changes were compared with muscletendon unit length changes calculated from kinematic recordings. In general, the tendomuscular and fascicle length changes demonstrated similar… Expand
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