Please use this identifier to cite or link to this item: https://doi.org/10.3390/nu13041374
Title: Hydration Status, Fluid Intake, Sweat Rate, and Sweat Sodium Concentration in Recreational Tropical Native Runners
Authors: Surapongchai, Juthamard
Saengsirisuwan, Vitoon
Rollo, Ian
Randell, Rebecca K
Nithitsuttibuta, Kanpiraya
Sainiyom, Patarawadee
HONG WEI CLARENCE LEOW 
JASON LEE KAI WEI 
Keywords: Science & Technology
Life Sciences & Biomedicine
Nutrition & Dietetics
recreational running
tropical climate
sweat electrolyte
fluid replacement
hydration plan
Issue Date: 20-Apr-2021
Publisher: MDPI
Citation: Surapongchai, Juthamard, Saengsirisuwan, Vitoon, Rollo, Ian, Randell, Rebecca K, Nithitsuttibuta, Kanpiraya, Sainiyom, Patarawadee, HONG WEI CLARENCE LEOW, JASON LEE KAI WEI (2021-04-20). Hydration Status, Fluid Intake, Sweat Rate, and Sweat Sodium Concentration in Recreational Tropical Native Runners. NUTRIENTS 13 (4). ScholarBank@NUS Repository. https://doi.org/10.3390/nu13041374
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.
Source Title: NUTRIENTS
URI: https://scholarbank.nus.edu.sg/handle/10635/193972
ISSN: 2072-6643
DOI: 10.3390/nu13041374
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