The role played by elasticity in an exercise involving movements of small amplitude

  title={The role played by elasticity in an exercise involving movements of small amplitude},
  author={H. Thys and Giovanni A. Cavagna and Rodolfo Margaria},
  journal={Pfl{\"u}gers Archiv},
SummaryIn an exercise consisting of repetitive small jumps on both feet at a frequency of 116/min, the mechanical work performed and the O2 consumption at steady state were measured. Of the positive work performed in the jump only 40% appears to be due to the chemical transformations taking place in the contractile component of the muscle fibres; the remaining 60% appears to be due to the elastic energy accumulated in the elastic elements of the contracted stretched muscles of the lower limbs… 

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