Key result
Peri-exercise fluid ingestion attenuates exercise-induced heart rate increases by ~6 bpm versus no fluids.
Why the study?
The study was undertaken to investigate the involvement of hydration in HR, HRV, and diastolic and systolic blood pressure in response to exercise.
Does fluid ingestion attenuate heart rate increases and improve autonomic recovery in adults during and after physical exercise?
Population
Subjects > 18 years old across 36 included studies (33 in meta-analysis)
Comparison
Hydration with water or isotonic drinks vs no liquid ingestion
Design
Systematic review and meta-analysis of RCTs and non-RCTs
Authors
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Supports hydration to blunt exercise cardiovascular strain; confirms meta-analytic benefits on heart rate and autonomic recovery.
Meta-Analysis
Does fluid ingestion attenuate heart rate increases and improve autonomic recovery in adults during and after physical exercise?
Effect estimate: Difference -6.20 bpm (95% CI -8.69 to -3.71)
Hydration during exercise attenuates exercise-induced heart rate increases and improves autonomic recovery via accelerated cardiac vagal modulation.
Porto et al. (2023) conducted a meta-analysis in Physical exercise. Hydration (water or isotonic drinks) vs. No liquid ingestion was evaluated on Heart rate during exercise (Difference -6.20 bpm, 95% CI -8.69 to -3.71). Fluid ingestion before, during, and after exercise attenuated exercise-induced increases in heart rate (-6.20 bpm; 95% CI -8.69 to -3.71) compared to no liquid ingestion.
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