Drinking Behavior and Perception of Thirst in Untrained Women During 6 Weeks of Heat Acclimation and Outdoor Training
Human Performance and Recreation
The purposes of this study were to characterize measures of fluid intake and perception of thirst in women over a 6-week period of exercise-heat acclimation and outdoor training and examine if this lengthy acclimation period would result in changes in fluid intake that differ from those previously reported in men utilizing a shorter acclimation protocol of 8-10 days. Voluntary water intake (11- 17 degreesC) and perception of thirst were measured in a group of 5 women (21-26 yr) undergoing exercise-heat acclimation for 90 min/day, 3 day s/wk (3 6 degreesC, rh 50-70%) and outdoor training 3 days/wk for 6 weeks. Decreased drinking during acclimation was characterized by a decrease in the number of drinks (35 +/- 10 to 17 +/- 5;p < .05), greater time to first drink (9.9 +/- 2.0 to 23.1 +/- 4.7 min; p < .05), and a decrease in total volume ingested per week (3310 +/- 810 to 1849 +/- 446 ml;p < .05) through the 6-week study. Mean perceived thirst measurements remained low and showed only slight variance 3 +/- 0.4 to 5 +/- 0.4). These observations support a psycho-physiological response pattern different than that previously observed during 8-10 day acclimation protocols in men.
International Journal of Sport Nutrition and Exercise Metabolism
Ormerod, J. K.,
Elliott, T. A.,
Scheett, T. P.,
VanHeest, J. L.,
Armstrong, L. E.,
Maresh, C. M.
(2003). Drinking Behavior and Perception of Thirst in Untrained Women During 6 Weeks of Heat Acclimation and Outdoor Training. International Journal of Sport Nutrition and Exercise Metabolism, 13(1), 15-28.
Available at: http://aquila.usm.edu/fac_pubs/4386