Influence of moderate dehydration on soccer performance: physiological responses to 45 min of outdoor match-play and the immediate subsequent performance of sport-specific and mental concentration tests

• Published in: British journal of sports medicine Vol. 41; no. 6; pp. 385 - 391
• Main Authors: Edwards, Andrew M, Mann, Michael E, Marfell-Jones, Michael J, Rankin, Dean M, Noakes, Timothy D, Shillington, David P
• Format: Journal Article
• Language: English
• Published: England BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine 01.06.2007; BMJ Publishing Group LTD; BMJ Publishing Group; BMJ Group
• Subjects: Adult; Athletes; Attention - physiology; body mass; Body Temperature; Body Weight - physiology; core temperature; Cross-Over Studies; Dehydration; Design; Drinking; Exercise - physiology; fluid intake; Fluids; Heart Rate; Heat; Human performance; Human subjects; Humans; Hydration; Male; mouth rinse; no fluid; Original; Osmolar Concentration; Physical fitness; Physiology; Plasma - chemistry; plasma osmolality; Posm; rating of perceived exertion; RPE; Soccer; Soccer - physiology; Sports medicine; Task Performance and Analysis; Time Factors; Uosm; Urine - chemistry; urine osmolality; urine specific gravity; Usg; Water Loss, Insensible - physiology; Yo-Yo Intermittent Recovery Test; YYIRT

Objective: To determine whether moderate water loss (∼1.5–2% of body mass (BM)) represents a significant impairment to soccer match-play and the related fitness variables. Methods: 11 moderately active male soccer players (mean (SD) age 24.4 (3) years, BM 74.03 (10.5) kg, peak oxygen consumption 50....