Simultaneous potentiation and fatigue in quadriceps after a 60-second maximal voluntary isometric contraction.

@article{Grange1991SimultaneousPA,
  title={Simultaneous potentiation and fatigue in quadriceps after a 60-second maximal voluntary isometric contraction.},
  author={Robert W. Grange and Michael E. Houston},
  journal={Journal of applied physiology},
  year={1991},
  volume={70 2},
  pages={726-31}
}
Potential mechanisms of fatigue (metabolic factors) and potentiation (phosphate incorporation by myosin phosphorylatable light chains) were investigated during recovery from a 60-s maximal voluntary isometric contraction (MVC) in the quadriceps muscle of 12 subjects. On separate days before and for 2 h after the 60-s MVC, either a 1-s MVC or electrically stimulated contractions were used as indexes to test muscle performance. Torque at the end of the 60-s MVC was 57% of the initial level… CONTINUE READING