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Hydration Status, Fluid Intake, Sweat Rate, and Sweat Sodium Concentration in Recreational Tropical Native Runners
Abstract
Aim: The purpose of this study was to evaluate hydration status, fluid intake, sweat rate, and sweat sodium concentration in recreational tropical native runners. Methods: A total of 102 males and 64 females participated in this study. Participants ran at their self-selected pace for 30–100 min. Age, environmental conditions, running profiles, sweat rates, and sweat sodium data were recorded. Differences in age, running duration, distance and pace, and physiological changes between sexes were analysed. A p-value cut-off of 0.05 depicted statistical significance. Results: Males had lower relative fluid intake (6 ± 6 vs. 8 ± 7 mL·kg−1·h−1, p < 0.05) and greater relative fluid balance deficit (−13 ± 8 mL·kg−1·h−1 vs. −8 ± 7 mL·kg−1·h−1, p < 0.05) than females. Males had higher whole-body sweat rates (1.3 ± 0.5 L·h−1 vs. 0.9 ± 0.3 L·h−1, p < 0.05) than females. Mean rates of sweat sodium loss (54 ± 27 vs. 39 ± 22 mmol·h−1) were higher in males than females (p < 0.05). Conclusions: The sweat profile and composition in tropical native runners are similar to reported values in the literature. The current fluid replacement guidelines pertaining to volume and electrolyte replacement are applicable to tropical native runners.
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“Current understanding of athletic hydration needs remains largely derived from endurance sports (30, 31), with limited data available for combat sports like taekwondo.”
From Optimizing hydration in Chinese youth taekwondo athletes: evidence-based daily and training session-specific fluid intake recommendations (2026) · cites this paper as [31]
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Cited by
Song, G., Chen, Y., Li, J., Pan, X., Sui, H., Chen, J., Lin, Y., & Yan, Y. (2026) · Frontiers in Nutrition · doi:10.3389/fnut.2026.1923019 · Cited by 1
Metadata
- Authors
- Surapongchai, J., Saengsirisuwan, V., Rollo, I., Randell, R. K., Nithitsuttibuta, K., Sainiyom, P., Leow, C. H. W., & Lee, J. K. W.
- Affiliations
- Faculty of Physical Therapy, Mahidol University, Nakhon Pathom 73170, Thailand
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
- Gatorade Sports Science Institute, PepsiCo Life Sciences, Global R&D, Leicestershire LE4 1ET, UK
- Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119283, Singapore
- Venue
- Nutrients
- Publisher
- MDPI AG
- Published
- 2021-04-20
- Volume
- 13
- Issue
- 4
- Pages
- 1374
- ISSN
- 2072-6643
- Cited by
- 23
- References
- 13
- Language
- en
- Funders
- Faculty of Physical Therapy, Mahidol University (n/a)
- Suntory PepsiCo Beverage Thailand Co. (n/a)
- Gatorade Sports Science Institute (n/a)
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- Surapongchai, J., Saengsirisuwan, V., Rollo, I., Randell, R. K., Nithitsuttibuta, K., Sainiyom, P., Leow, C. H. W., & Lee, J. K. W. (2021). Hydration Status, Fluid Intake, Sweat Rate, and Sweat Sodium Concentration in Recreational Tropical Native Runners. Nutrients. https://doi.org/10.3390/nu13041374
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