Core Temperature and Sweating in Men and Women During a 15-km Race in Cool Conditions

Autor: Coen C. W. G. Bongers, Maria T. E. Hopman, Dominique S. M. ten Haaf, Nicholas Ravanelli, Thijs M. H. Eijsvogels
Rok vydání: 2019
Předmět:
Zdroj: International Journal of Sports Physiology and Performance, 15, 1132-1137
International Journal of Sports Physiology and Performance, 15, 8, pp. 1132-1137
ISSN: 1555-0273
1555-0265
Popis: Purpose: Studies often assess the impact of sex on the relation between core body temperature (CBT), whole-body sweat rate (WBSR), and heat production during exercise in laboratory settings, but less is known in free-living conditions. Therefore, the authors compared the relation between CBT, WBSR, and heat production between sexes in a 15-km race under cool conditions. Methods: During 3 editions of the Seven Hills Run (Nijmegen, the Netherlands) with similar ambient conditions (8–12°C, 80–95% relative humidity), CBT and WBSR were measured among 375 participants (52% male) before and immediately after the 15-km race. Heat production was estimated using initial body mass and mean running speed, assuming negligible external work. Results: Men finished the race in 76 (12) minutes and women in 83 (13) minutes (P P P P = .71, ES = 0.04). Men demonstrated a greater increase in CBT (1.5°C [0.8°C] vs 1.3°C [0.7°C], respectively, P = .013, ES = 0.31); the sex difference remains after correcting for heat production (P = .004). WBSR was larger in men (18.0 [6.9] g/min) than in women (11.4 [4.7] g/min; P R2 = .395, P Conclusions: WBSR was associated with heat production, irrespective of sex, during a self-paced 15-km running race in cool environmental conditions. Men had a higher ΔCBT than women.
Databáze: OpenAIRE