Post‐exercise hot or cold water immersion does not alter perception of effort or neuroendocrine responses during subsequent moderate‐intensity exercise

Menzies, Campbell and Clarke, Neil and Pugh, Christopher J. A. and Steward, Charles J. and Thake, C. Douglas and Cullen, Tom (2024) Post‐exercise hot or cold water immersion does not alter perception of effort or neuroendocrine responses during subsequent moderate‐intensity exercise. Experimental Physiology. ISSN 0958-0670

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Abstract

Post-exercise hot (HWI) and cold (CWI) water immersion are popular strategies used by athletes in a range of sporting contexts, such as enhancing recovery or adaptation. However, prolonged heating bouts increase neuroendocrine responses that are associated with perceptions of fatigue. Fourteen endurance-trained runners performed three trials consisting of two 45-min runs at 95% lactate threshold on a treadmill separated by 6 h of recovery. Following the first run, participants completed one of HWI (30 min, 40°C), CWI (15 min, 14°C) or control (CON, 30 min rest in ambient conditions) in a randomised order. Perceived effort and recovery were measured using ratings of perceived exertion (RPE) and the Acute Recovery and Stress Scale (ARSS), whilst physiological responses including venous concentrations of a range of neuroendocrine markers, superficial femoral blood flow, heart rate and rectal temperature were measured. Exercise increased neuroendocrine responses of interleukin-6, adrenaline and noradrenaline (all P < 0.001). Additionally, perceptions of overall recovery (P < 0.001), mental performance capacity (P = 0.02), physical performance capability (P = 0.01) and emotional balance (P = 0.03) were reduced prior to the second run. However, there was no effect of condition on these variables (P > 0.05), nor RPE (P = 0.68), despite differences in rectal temperature, superficial femoral blood flow following the first run, and participants’ expected recovery prior to the intervention (all P < 0.001). Therefore, athletes may engage in post-exercise hot or cold-water immersion without negatively impacting moderate-intensity training sessions performed later the same day.

Item Type: Article
Identification Number: 10.1113/EP091932
Dates:
Date
Event
20 June 2024
Accepted
6 July 2024
Published Online
Uncontrolled Keywords: cooling, exercise, heating, recovery
Subjects: CAH03 - biological and sport sciences > CAH03-02 - sport and exercise sciences > CAH03-02-01 - sport and exercise sciences
Divisions: Faculty of Health, Education and Life Sciences > College of Life Sciences
Depositing User: Gemma Tonks
Date Deposited: 09 Aug 2024 15:22
Last Modified: 09 Aug 2024 15:22
URI: https://www.open-access.bcu.ac.uk/id/eprint/15703

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