Impact of Preparticipating Hypohydration on Cardiopulmonary Exercise Capacity in Ambitious Recreational Athletes
Strüven A, Brunner S, Weis G, Stremmel C, Teupser D, Schlichtiger J, Lackermair K
Nutrients · 2 citations
How it was studied
- Design
- Controlled clinical trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
Based on full-text disclosure statement.
Publication
- Published
- 2023-07-27 · Nutrients · vol. 15 · issue 15 · p. 3333
- Publisher
- Multidisciplinary Digital Publishing Institute
- Cited
- 4 citations · more than 64% of similar papers · 0.6× the field average
- References
- 44 works
- Access
- Open access (journal) · CC-BY
- Research areas
- Thermoregulation and physiological responses · Body Composition Measurement Techniques · Infrared Thermography in Medicine
- Keywords
- Athletes, Medicine, Physical therapy, Recreation, Biology
- MeSH
- humans, dehydration, electrolytes, oxygen, exercise, exercise tolerance, hot temperature, athletes
7 authors
From DE
- Anna Katharina StrüvenLudwig-Maximilians-Universität München
- Stefan BrunnerLudwig-Maximilians-Universität München
- Georges WeisLudwig-Maximilians-Universität München
- Christopher StremmelLudwig-Maximilians-Universität München
- Daniel TeupserLudwig-Maximilians-Universität München
- Jenny SchlichtigerLudwig-Maximilians-Universität München
Abstract
Background
Heat induces a thermoregulatory strain that impairs cardiopulmonary exercise capacity. The aim of the current study is to elucidate the effect of isolated dehydration on cardiopulmonary exercise capacity in a model of preparticipating hypohydration.
Methods
Healthy recreational athletes underwent a standardised fluid deprivation test. Hypohydration was assessed by bioelectrical impedance analysis (BIA) and laboratory testing of electrolytes and retention parameters in the blood and urine. The participants underwent cardiopulmonary exercise testing (CPET) with a cycle ramp protocol. Each participant served as their own control undergoing CPET in a hypohydrated [HYH] and euhydrated [EUH] state.
Results
Fluid deprivation caused a mild (2%) but significant reduction of body water (38.6 [36.6; 40.7] vs. 39.4 [37.4; 41.5] %; p p p = 0.02 at ventilatory threshold1; -2.0%; p p = 0.01, -3.3% at maximum power; p p p = 0.01 at maximum power).
Conclusion
Isolated hypohydration causes impairment of workload as well as peak oxygen uptake in recreational athletes. Our findings might indicate an important role of hypohydration in the heat-induced reduction of exercise capacity.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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