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Other Subject Area

Water safety

Abstract

International Journal of Exercise Science 14(6): 756-767, 2021. Stand up paddle (SUP) boarding is a popular water-based aquatic sport and recreational activity that continues to grow in popularity, however, little is known about its effect upon hydration status in recreational and elite level participants. The aim of this study was to examine the hydration status in SUP by investigating fluid loss through measurement of nude body mass. Thirty participants successfully completed the study. Hydration status was assessed by measurements of nude body mass taken pre and post SUP session. Intensity of the session was monitored throughout each session using a telemetry heart rate (HR) monitor; both mean and maximum HRs were assessed. Environmental conditions were recorded prior to each session and participants rated perceived hydration pre and post activity. SUP sessions average duration was 68 ± 13 mins (mean HR: 135 ± 20 bpm, peak HR: 167.1 ± 12 bpm). The average mass lost in a SUP session was 0.82 ± 0.4 kg (absolute), 0.03 ± 1 (relative BMI), 0.43 ± 0.2 (relative BSA) and the overall percentage of loss was 1.2 ± 0.6 % (p < 0.01, d = 0.47). Key predictors (p < 0.05) of fluid loss included ambient air temperature, gender (males), mean HR and SUP session duration. Results from this study suggest that SUP participants may require fluid loss monitoring to allow for effective rehydration strategies. Pre-hydration strategies are also recommended to avoid dehydration which is associated with decreased performance (aerobic and strength), increased core temperature, heart rate and may lead to detrimental health outcomes such as renal failure and heat illness in extreme circumstances.

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