Effects of Hypohydration on Repeated 40-yd Sprint Performance
Gann JJ, Green JM, OʼNeal EK, Renfroe LG, Andre TL
Journal of strength and conditioning research · 5 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Randomized controlled trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2015-09-05 · J Strength Cond Res · vol. 30 · issue 4 · pp. 901–909
- Publisher
- Lippincott Williams & Wilkins
- Cited
- 6 citations · more than 54% of similar papers · 0.2× the field average
- References
- 47 works
- Access
- Paywalled
- Research areas
- Thermoregulation and physiological responses · Sports Performance and Training · Exercise and Physiological Responses
- Keywords
- Sprint, Perceived exertion, Physical therapy, Athletes, Repeated measures design, Psychology, Medicine, Mathematics, Physical medicine and rehabilitation, Statistics, Internal medicine, Heart rate, Blood pressure
- MeSH
- humans, dehydration, exercise test, running, adult, male, athletic performance, physical exertion, young adult
5 authors
From US
- Joshua J. Gann · correspondingUniversity of North Alabama; Baylor University
- James M. GreenUniversity of North Alabama
- Eric Kyle O'NealUniversity of North Alabama
- Lee G. RenfroeUniversity of North Alabama
- Thomas AndréBaylor University
Abstract
This study examined the effects of hypohydration on repeated 40-yd sprint performance. Anaerobically fit current and former Division II male athletes (n = 12) completed 2 bouts of 10 × 40-yd sprints followed by an agility test, dehydrated (∼3% body weight [DT]), or hydrated trial (HT). Statistical analysis of group means indicated that hypohydration had little effect on sprint times for either the first (DT= 5.38 ± 0.37; HT = 5.35 ± 0.34) or second (DT = 5.47 ± 0.39; HT = 5.42 ± 0.39) bout of 10 sprints with only sprint number 2, 5, and 6 of bout 2 reaching statistical significance. However, when individual sprint performance was considered, a greater effect was seen. In all, 83% (10 of 12) of subjects experienced a meaningful change (≥0.1 seconds) (positive or negative) in mean sprint time (DT vs. HT) for one or more bout of 10 sprints. Ratings of perceived exertion was significantly higher (∼1 unit on a 10 point scale) for DT in all sprints during bout 1 and the first 2 sprints of bout 2. These results indicate that the effect of hypohydration on repeated sprint performance varies among individuals. Some improved performance with hypohydration, while others experienced detrimental effects. Hypohydration also resulted in a particularly notable negative impact on perceptual measures of exertion even when performance was similar.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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