The effects of cold water immersion and partial body cryotherapy on subsequent exercise performance and thermoregulatory responses in hot conditions.

Autor: Zhou Z; School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China., Su Y; School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China., Wu Y; School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China., Qin F; School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China., Zheng X; School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China. Electronic address: zhengxinyan0513@163.com.
Jazyk: angličtina
Zdroj: Journal of thermal biology [J Therm Biol] 2024 Jul; Vol. 123, pp. 103926. Date of Electronic Publication: 2024 Jul 30.
DOI: 10.1016/j.jtherbio.2024.103926
Abstrakt: This study investigated the effects of cold water immersion (CWI) and partial body cryotherapy (PBC) applied within a 15-min post-exercise recovery period on thermoregulatory responses, subjective perceptions, and exercise performance under hot conditions (39 °C). Twelve male soccer players participated in team-sports-specific assessments, including Agility T-test (T-test), 20-m sprint test (20M-ST), and Yo-Yo Intermittent Endurance Test Level 1 (YY-T), during two exercise bouts (1 st bout and 2 nd bout) with a 15-min post-exercise recovery period. Within the recovery period, a 3-min of PBC at -110 °C or CWI at 15 °C or a seated rest (CON) was performed. Mean skin temperature (T skin ) decreased by 4.3 ± 1.08°C (p < 0.001) immediately after PBC, while CWI induced a reduction of 2.5 ± 0.21°C (p < 0.01). Furthermore, PBC and CWI consistently reduced T skin for 15 and 33 min, respectively (p < 0.05). During the 2 nd bout, core temperature (T core ) was significantly lower in PBC compared to CON (p < 0.05). Heart rate (HR) was significantly lower in CWI compared to CON and PBC during the intervention period. Thermal sensation (TS) was significantly greater in PBC compared to CON and CWI (p < 0.05). Compared to the 1 st bout, PBC alleviated the declines in T-test (p < 0.05) and 20M-ST (p < 0.05), while CWI alleviated the decreases in T-test (p < 0.05) and YY-T (p < 0.05), concurrently significantly enhancing 20M-ST (p < 0.05). 20M-ST and YY-T was greater from PBC (p < 0.05) and CWI (p < 0.05) compared with CON in 2 nd bout. Additionally, the T-test in CWI was significantly greater than CON (p < 0.05). These results indicate that both PBC and CWI, performed between two exercise bouts, have the potential to improve thermoregulatory strain, reduce thermal perceptual load, and thereby attenuate the subsequent decline in exercise performance.
Competing Interests: Declaration of competing interest There are no actual or potential conflicts of interest for any of the authors.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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