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Non-invasive Assessments of Subjective and Objective Recovery Characteristics Following an Exhaustive Jump Protocol

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Gender differences in temperature and vascular characteristics during exercise recovery.

I Marchand¹, D Johnson, D Montgomery

¹University of Guelph, Guelph, ON.

Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquee

|October 25, 2001

Summary

Women exhibit prolonged lower core and skin temperatures post-exercise compared to men, indicating altered thermoregulation. Further research is needed to understand these sex-based differences in exercise recovery.

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Area of Science:

Exercise Physiology
Thermoregulation
Sex Differences in Physiology

Background:

Understanding sex-based differences in physiological responses to exercise is crucial for tailored training and recovery strategies.
Previous research suggests potential variations in thermoregulation between men and women during and after physical exertion.

Purpose of the Study:

To investigate and compare temperature and vascular responses during exercise recovery in men and women of similar age and fitness levels.
To identify potential sex-specific patterns in core body temperature, skin temperature, and forearm blood flow during post-exercise recovery.

Main Methods:

Participants: Men and women with similar age and maximal oxygen uptake (VO2max).
Protocol: 45-minute run at 75% VO2max, followed by 105 minutes of recovery.
Measurements: Forearm blood flow (venous occlusion plethysmography), rectal temperature (Trectal), and forearm skin temperature (Tskin) recorded at regular intervals.

Main Results:

Women maintained lower rectal temperatures than men throughout the later stages of recovery (60-105 min).
Forearm skin temperature was lower in women than men during the final 15 minutes of recovery.
Recovery forearm blood flow was consistently higher in men than women, while forearm heat flux was higher in women.

Conclusions:

Women exhibit a delayed return of core and skin temperatures to baseline levels post-exercise compared to men.
Observed differences in forearm blood flow and heat flux suggest distinct vascular and thermoregulatory mechanisms between sexes during recovery.
Further investigation is warranted to elucidate the underlying physiological mechanisms responsible for these sex-based thermoregulatory differences in post-exercise recovery.