Exercise-induced hypohydration impairs 3 km treadmill-running performance in temperate conditions
Funnell MP, Embleton D, Morris T, Macrae HZ, Hart N, Mazzotta T, Lockyer W, Juett LA, Mears SA, James LJ
Journal of sports sciences · 9 citations
How it was studied
- Design
- Controlled clinical trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
- Unclassified
- no specific funding
Based on 1 listed funder(s).
Publication
- Published
- 2023-06-18 · J Sports Sci · vol. 41 · issue 12 · pp. 1171–1178
- Publisher
- Taylor & Francis
- Cited
- 10 citations · more than 81% of similar papers · 1.4× the field average
- References
- 41 works
- Access
- Open access (hybrid journal) · CC-BY-NC-ND
- Research areas
- Thermoregulation and physiological responses · Exercise and Physiological Responses · Sports Performance and Training
- Keywords
- Preload, Animal science, Treadmill, Internal medicine, Endocrinology, Plasma volume, Medicine, Chemistry, Cardiology, Biology, Hemodynamics
- MeSH
- humans, dehydration, weight loss, exercise test, exercise, thirst, water-electrolyte balance, oxygen consumption, sweating, plasma volume, heart rate, drinking, running, osmolar concentration, adult, male, athletic performance, young adult
10 authors
From GB
- Mark P. Funnell · correspondingLoughborough University
- Daniel EmbletonLoughborough University
- Thomas C MorrisLoughborough University
- Heather Z. MacraeLoughborough University
- Nicholas HartLoughborough University
- Tiberio MazzottaLoughborough University
Abstract
Research assessing exercise-induced hypohydration on running performance in a temperate environment is scarce. Given the weight-bearing nature of running, the negative effects of hypohydration might be offset by the weight-loss associated with a negative fluid balance. Therefore, this study investigated the effect of exercise-induced hypohydration on running performance in temperate conditions. Seventeen intermittent games players (age 22 ± 1 y; VO2peak 52.5 ± 4.1 mL∙kg-1∙min-1) completed preliminary and familiarisation trials, and two experimental trials consisting of 12 blocks of 6 min of running (65% VO2peak; preload) with 1 min passive rest in-between, followed by a 3 km time trial (TT). During the preload, subjects consumed minimal fluid (60 mL) to induce hypohydration (HYP) or water to replace 95% sweat losses (1622 ± 343 mL; EUH). Body mass loss (EUH -0.5 ± 0.3%; HYP -2.2 ± 0.4%; P P ≤ 0.022), were apparent in HYP by the end of the preload. TT performance was ~6% slower in HYP (EUH 900 ± 87 s; HYP 955 ± 110 s; P < 0.001). Exercise-induced hypohydration of ~2% body mass impaired 3 km running TT performance in a temperate environment.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY-NC-ND).
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