FLUID INTAKE AND SWEAT RATE DURING HOT YOGA PARTICIPATION
Abstract
FLUID INTAKE AND SWEAT RATE DURING HOT YOGA PARTICIPATION
1S. Campbell, 2R.C. Pritchett, 1K. Justice, 2K.L. Pritchett, and 1T.R. Burnham
1Central Washington University, Ellensburg, WA. 2The University of Georgia, Athens, GA.
Sport participants often begin competition or practice in a hypo-hydrated state. Hot yoga participants are at risk for dehydration due to the nature of the environment they practice in, which could be compounded by their pre-exercise hydration status. PURPOSE: To investigate the pre-exercise hydration status, fluid balance, perception of sweat loss, and sweat sodium loss in hot yoga participants. METHODS: Male and female participants (n = 21, 33 ± 10.5 yr., 173.1 ± 10.0 cm; mass, 70.7 ± 11.0 kg) were examined during a one - hour hot hatha yoga class (38.7 ± 2.6 °C, 36 ± 13% relative humidity). Urine specific gravity (USG) was measured to assess pre-exercise hydration status. Sweat rate was calculated using pre and post session weight and fluid intake. Sweat sodium concentration was analyzed via a sweat patch sample. After the hot yoga session, participants were asked to fill an empty 1 -liter container with the amount of water with which they perceived they lost as sweat during the class. A paired t test was used to identify significance between measured sweat loss and perceived sweat loss and Pearson’s correlation analyses were used to assess any relationships between selected variables (p ≤ 0.05). RESULTS: 76% of participants began hot yoga euhydrated (USG < 1.020). Sweat rate was 0.9 ± 0.6 L·h-1, and despite free access to fluids during class, consumption was low (0.2 ± 0.2 L·h-1) and 33% did not consume any fluids. Consequently, mean percent body mass loss was 0.9 ± 0.6% from pre-exercise body mass, and about half of the participants lost at least 1% of body mass. There was a significant difference between perception of sweat loss and measured loss (p = 0.01). Mean sweat sodium concentration was 49.1 ± 19.2 mmol·L-1. CONCLUSION: These findings highlight the individual variability in hydration management among hot yoga participants. Therefore, a need for personalized hydration guidelines and individual education is warranted to prevent hypo hydration.
Recommended Citation
Campbell, S.; Pritchett, R.C.; Justice, K.; Pritchett, R.L.; and Burnham, T.R.
(2014)
"FLUID INTAKE AND SWEAT RATE DURING HOT YOGA PARTICIPATION,"
International Journal of Exercise Science: Conference Proceedings: Vol. 8:
Iss.
2, Article 50.
Available at:
https://digitalcommons.wku.edu/ijesab/vol8/iss2/50