This project aims to clarify the mechanisms underpinning the acute analgesic effect of exercise in healthy humans-a phenomenon called "Exercise-induced hypoalgesia" (EIH). This study will characterize, using a within-subject cross-over design, the effects of a single session of aerobic exercise vs. a control condition on the sensitivity to stimuli preferentially activating mechano vs. heat-sensitive nociceptors of the skin vs. muscle, within vs. outside exercising body parts. The investigators hypothesize (1) that EIH will be greater in the exercise session compared to the control session, (2) that EIH will be greater at the local site compared to the remote site if local changes in nociceptive sensitivity contribute to EIH, and (3) that exercise will preferentially affect blunt pressure-induced pain if EIH involves specific changes in sensitivity of muscle nociceptors.
Age range
18 Years – 30 Years
Sex
MALE
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Change in pressure pain threshold
Timeframe: Throughout the entire study, approximately during 6 months
Change in cold detection threshold and heat pain threshold
Timeframe: Throughout the entire study, approximately during 6 months
Change in rating of mechanical activation of cutaneous nociceptive afferents
Timeframe: Throughout the entire study, approximately during 6 months
Change in auditory detection threshold
Timeframe: Throughout the entire study, approximately during 6 months