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Alimentation sportive

Sports Hydration

Fluid consumption strategy to maintain hydration and performance during exercise.

Definition

Optimal management of fluid intake before, during, and after physical exercise to maintain water homeostasis and performance. It prevents dehydration and its detrimental effects.

How it works

Dehydration reduces blood volume, increases heart rate and body temperature, diminishing performance and increasing the risk of heat stroke. Adequate hydration maintains blood volume, thermoregulation, and nutrient delivery. Needs vary according to intensity, duration, climate, and individual perspiration. A fluid loss exceeding 2% of body weight significantly affects performance. Post-exercise rehydration must exceed sweat losses to replenish reserves.

Role

Maintain water homeostasis and optimize cardiovascular and thermoregulatory performance.

Examples

  • Plain water
  • Isotonic drinks
  • Hypotonic drinks
  • Hypertonic drinks
  • Milk

Recommendations

Drink 400-600 ml of fluid every 15-20 minutes during exercise, before feeling thirsty. Before exercise, pre-hydrate progressively. Afterward, consume 150% of the estimated fluid loss over 4-6 hours for complete rehydration.

Key takeaway

Planned and regular sports hydration during exercise is essential for maintaining performance and safety.

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