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Effect of force level and training status on contractile properties following fatigue
S Jayne Garland1, David Walton, Tanya D Ivanova
1School of Physical Therapy, Elborn College, the University of Western Ontario, London, ON N6G 1H1.
Abstract:
This study examined the effects of fatigue on the contractile properties of the twitch contraction evoked by the H-reflex and the maximal M-wave. Untrained subjects demonstrated more pronounced slowing of half relaxation time (HRT) in the H-reflex twitch than in the M-wave twitch and also more slowing of HRT in high force vs. low force contractions. Endurance-trained subjects, however, demonstrated a shortening of the H-reflex twitch. The twitch contractile properties following fatigue are dependent on force level and training status.