Electromyogram activity and mean power frequency in exercise-damaged human muscle.

  title={Electromyogram activity and mean power frequency in exercise-damaged human muscle.},
  author={Steven H. Day and Alan Edward Donnelly and Stephen J. Brown and R. B. Child},
  journal={Muscle & nerve},
  volume={21 7},
Eight volunteers performed two bouts of 50 voluntary maximal eccentric contractions of the knee extensors of one leg 3 weeks apart. During maximal voluntary isometric contractions performed at intervals after each bout, electromyogram (EMG) mean power frequency declined after bout one (P < 0.01 Duncan's test), whereas integrated EMG did not change after either bout. These results suggest that unaccustomed eccentric contractions produce a temporary reduction in mean muscle activation frequency… CONTINUE READING

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Impaired action potential conduction at high force levels after eccentric exercise.

Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology • 2010

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