Force enhancement of quadriceps femoris in vivo and its dependence on stretch-induced muscle architectural changes.

@article{Seiberl2010ForceEO,
  title={Force enhancement of quadriceps femoris in vivo and its dependence on stretch-induced muscle architectural changes.},
  author={Wolfgang Seiberl and Daniel R. Hahn and Florian Kreuzpointner and A. Schwirtz and Uwe Gastmann},
  journal={Journal of applied biomechanics},
  year={2010},
  volume={26 3},
  pages={256-64}
}
The purpose of this study was to investigate if force enhancement (FE) in vivo is influenced by stretch-induced changes of muscle architecture. Therefore, 18 subjects performed maximum voluntary isometric (100 degree knee flexion angle) and isometric-eccentric-isometric stretch contractions (80 degrees-100 degrees; ω=60 degrees.s(-1)) whereby pennation angle and fascicle length of vastus lateralis was determined using ultrasonography. We found significant (2-way repeated ANOVA; α=0.05) enhanced… CONTINUE READING
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