Decreases in motor unit firing rate during sustained maximal-effort contractions in young and older adults.

@article{Rubinstein2005DecreasesIM,
  title={Decreases in motor unit firing rate during sustained maximal-effort contractions in young and older adults.},
  author={Scott R Rubinstein and Gary Kamen},
  journal={Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology},
  year={2005},
  volume={15 6},
  pages={536-43}
}
Previous studies have suggested that older adults may be more resistant to muscular fatigue than young adults. We sought to determine whether motor unit firing rate might be a factor that determines the response to fatiguing exercise in young and older subjects. Motor unit recordings and muscular forces were obtained from the tibialis anterior (TA) muscle of 11 young and 8 older individuals. Maximal voluntary force was first measured during maximal-effort dorsiflexion contractions. Each subject… CONTINUE READING

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