No effect of moderate hypohydration or hyperthermia on anaerobic exercise performance

This study examined the effects of hypohydration and moderate hyperthermia (core temperature elevation) on anaerobic exercise performance in a temperate environment. Eight active males completed two passive heat exposure trials (180 min, 45 degrees C, 50% rh) with (EUH) and without (HYP) fluid repla...

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Bibliographic Details
Published in:Medicine and science in sports and exercise 2006-06, Vol.38 (6), p.1093-1097
Main Authors: CHEUVRONT, Samuel N, CARTER, Robert, HAYMES, Emily M, SAWKA, Michael N
Format: Article
Language:English
Subjects:
Adult
Anaerobic Threshold - physiology
Biological and medical sciences
Body Temperature - physiology
Body Weight - physiology
Climate
Cross-Over Studies
Dehydration - physiopathology
Environmental Exposure
Exercise Test
Fatigue - physiopathology
Follow-Up Studies
Fundamental and applied biological sciences. Psychology
Heat Stress Disorders - physiopathology
Hot Temperature
Humans
Humidity
Male
Rehydration Solutions - administration & dosage
Single-Blind Method
Time Factors
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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Summary:This study examined the effects of hypohydration and moderate hyperthermia (core temperature elevation) on anaerobic exercise performance in a temperate environment. Eight active males completed two passive heat exposure trials (180 min, 45 degrees C, 50% rh) with (EUH) and without (HYP) fluid replacement. A single 15-s Wingate anaerobic test (WAnT) was used to assess anaerobic performance (peak power, mean power, and fatigue index) before (-180 min) and again at three time points after passive heat exposure to include immediately (0 min), 30 min, and 60 min after in a temperate environment (22 degrees C). Rectal temperature (Tc) was measured throughout the experiment. HYP reduced body mass (2.7+/-0.7%) (P
ISSN:0195-9131
1530-0315
DOI:10.1249/01.mss.0000222838.74015.15