The fatigue of voluntary contraction and the peripheral electrical propagation of single motor units in man

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RESUMO

1. Single human motor units from the short extensors of the toes were classified by their voluntary threshold and axonal conduction velocity. The voluntary discharge intervals, and the shortest discharge intervals at which action potentials were conducted to the muscle fibres, were studied during maximal voluntary effort maintained for 1 min, and were compared with the intervals calculated to be necessary for full fusion.

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