Motor units within the normal rat medial gastrocnemius.

  title={Motor units within the normal rat medial gastrocnemius.},
  author={Lloyd Einsiedel and Anthony R. Luff},
  journal={Experimental physiology},
  volume={78 3},
The contractile properties, fatiguability and axonal conduction velocity were determined for 118 motor units in the medial gastrocnemius of eighteen rats. Fast-twitch and slow-twitch units could be categorized on the basis of the 'sag' test. For the purposes of statistical comparison the fast-twitch units were classified on the basis of their fatiguability as fast-fatiguable (FF), fast intermediate (FI) and fast fatigue-resistant (FR). As such, FR units tended to have a longer isometric twitch… CONTINUE READING