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Fluid Loss in Recreational Surfers
Jessica K Atencio1, Richard F Armenta1, Jeff A Nessler1
1Department of Kinesiology, California State University-San Marcos, San Marcos, CA, USA.
International Journal of Exercise Science
|May 31, 2021
Summary
Surfing causes significant fluid loss, especially during longer sessions and for surfers with higher body mass index (BMI). Proper pre-hydration is crucial to avoid dehydration risks.
Area of Science:
- Exercise Physiology
- Sports Science
- Environmental Health
Background:
- Surfing presents unique thermoregulation and hydration challenges.
- Understanding fluid loss is critical for surfer health and performance.
Purpose of the Study:
- To quantify fluid loss in recreational surfers.
- To analyze factors influencing fluid loss, including environmental conditions and participant characteristics.
Main Methods:
- Recruited 306 recreational surfers across diverse locations.
- Assessed hydration status via pre- and post-surf nude body mass.
- Measured heart rate (HR) for exercise intensity and recorded environmental data.
Main Results:
- Surfers lost an average of 0.82% body mass, a statistically significant reduction.
- Increased session duration and higher body mass index (BMI) were significantly associated with greater fluid loss.
- Each 10-minute increase in surfing time correlated with 0.06 kg fluid loss; a two-unit BMI increase correlated with 0.05 kg fluid loss.
Conclusions:
- Prolonged surfing in warm conditions significantly impacts hydration, particularly for individuals with higher BMI.
- The lack of rehydration opportunities during surfing necessitates proactive hydration strategies.
- Surfers should prioritize pre-hydration to mitigate dehydration effects.
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