Animal models suggest that heat stress increases protein content and facilitates the recovery of atrophied muscle after an immobilization period, or following a chemically induced muscle injury in rats. Thus, a recent study in human have reported that daily heat treatments, applied during 10 days of immobilization, reduced the loss of muscle mass. In addition of protecting muscle mass, repeated heat stress may also help to maintain cardiovascular fitness from the onset of injury through passive exposures in the condition that they sufficiently trigger an increase in body temperature, circulation and sweating. This study will investigate the benefits of using heat therapy to prevent deconditioning during immobilization in human.
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Change in maximal strength of the plantar flexors from baseline to post-immobilization
Timeframe: Baseline (week 4) and week 6 (post immobilization)
Change in maximal strength of the plantar flexors from baseline to post-retraining
Timeframe: Baseline (week 4) and week 8 (post retraining)
Change in muscle volume of the plantar flexors from baseline to post-immobilization
Timeframe: Baseline (week 4) and week 6 (post immobilization)
Change in muscle volume of the plantar flexors from baseline to post-retraining
Timeframe: Baseline (week 4) and week 8 (post retraining)
Change in muscle protein content from baseline to post-immobilization
Timeframe: Baseline (week 4) and week 6 (post immobilization)
Change in muscle protein content from baseline to post-retraining
Timeframe: Baseline (week 4) and week 8 (post retraining)