Voluntary dehydration and cognitive performance in trained college athletes.
Cognitive and mood decrements resulting from mild dehydration and glucose consumption were studied. Men and women (total N = 54; M age = 19.8 yr., SD = 1.2) were recruited from college athletic teams. Euhydration or dehydration was achieved by athletes completing team practices with or without water replacement. Dehydration was associated with higher thirst and negative mood ratings as well as better Digit Span performance. Participants showed better Vigilance Attention with euhydration. Hydration status and athlete's sex interacted with performance on Choice Reaction Time and Vigilance Attention. In a second study, half of the athletes received glucose prior to cognitive testing. Results for negative mood and thirst ratings were similar, but for cognitive performance the results were mixed. Effects of glucose on cognition were independent of dehydration.
D'anci
Kristen E
KE
Tufts University Department of Psychology, Jean Mayer USDA Human Nutrition Research Center on Aging, Medford, MA 02155, USA.
Vibhakar
Arjun
A
Kanter
Jordan H
JH
Mahoney
Caroline R
CR
Taylor
Holly A
HA
D000328:Adult; D000339:Affect / Q000187:drug effects; D054874:Athletic Performance / Q000502:physiology; D001834:Body Water / Q000187:drug effects / Q000502:physiology; D003071:Cognition / Q000187:drug effects* / Q000502:physiology*; D003681:Dehydration / Q000503:physiopathology* / Q000517:prevention & control / Q000628:therapy; D004040:Dietary Carbohydrates / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D005440:Fluid Therapy / Q000379:methods; D005947:Glucose / Q000008:administration & dosage / Q000494:pharmacology*; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D005082:Physical Exertion / Q000187:drug effects / Q000502:physiology; D013177:Sports / Q000502:physiology* / Q000523:psychology; D013334:Students; D011795:Surveys and Questionnaires; D013894:Thirst / Q000187:drug effects; D014495:Universities
D004040:Dietary Carbohydrates; D005947:Glucose