Daily Body Mass Variability and Stability in Active Men Undergoing Exercise-Heat Stress

• DOI: 10.1123/ijsnem.14.5.532
• Publication Date: 2016-08-10T12:34:32Z
• Authors: Samuel N. Cheuvront; Robert Carter; Scott J. Montain; Michael N. Sawka
• Keywords: Adult; Male; Adolescent; Body Weight; Drinking; Water-Electrolyte Balance; Heat Stress Disorders; 03 medical and health sciences; Cross-Sectional Studies; 0302 clinical medicine; Humans; Exercise; Retrospective Studies

The purpose of this study was to quantify the variability and stability 1st morning body mass (BM) fluctuations during daily exercise in heat while following traditional fluid intake guidance. Data from 65 men were examined retrospectively. BM monitored over 4 15 consecutive days. Group variation 0.51+/-0.20 kg. coefficient 0.66+/-0.24%, normally distributed, not related either absolute (r = 0.04) or number measurements 0.34). Three days resulted a similar estimate compared 6 9 d, although precision improved with d. In conclusion, 3 provide an accurate assessment variability, which is less than 1% for active when replacing 100% sweat losses exercise. data also suggest that sufficiently stable physiological parameter potential balance monitoring.