Muscle-Tendon Interaction During Human Dolphin-Kick Swimming.

ABSTRACT: Without high impact forces, it is not clear how humans can utilize tendon elasticity during low-impact activities. The purpose of the present study was to examine the muscle-tendon behavior together with the electromyographic (EMG) activities of the vastus lateralis (VL) muscle during the human dolphin-kicking. In a swimming pool, each subject (n = 11) swam the 25 m dolphin-kicking at two different speeds (NORMAL and FAST). Surface EMGs were recorded from the VL and biceps femoris (BF) muscles. Simultaneous recordings of the knee joint angle by electro-goniometer and of the VL fascicle length by ultrasonography were used to calculate the muscle-tendon unit and tendinous length of VL (L_MTU and L_TT, respectively). In the dolphin-kicking, the stretching and shorte

SUBMITTER: Sano K 

PROVIDER: S-EPMC6753165 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature