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Alimentation sportive

Sport Caffeine

Ergogenic stimulant improving mental alertness and physical performance before exercise.

Definition

A central nervous system stimulant that improves alertness, reduces the perception of perceived effort, and increases aerobic and anaerobic performance. Effective dose: 3-6 mg per kilogram of body weight.

How it works

Caffeine works by blocking adenosine receptors, a neurotransmitter responsible for the sensation of fatigue. It increases dopamine and noradrenaline concentrations, improving alertness and motivation. It also reduces the perception of effort, allowing athletes to maintain higher intensity for longer. Effects appear 30-60 minutes after ingestion and last 4-6 hours. Tolerance develops progressively with regular consumption.

Role

Stimulate the central nervous system and reduce the perception of fatigue during exercise.

Examples

  • Coffee
  • Tea
  • Energy drinks
  • Energy gels
  • Caffeine tablets

Recommendations

Consume 3-6 mg/kg of body weight 30-60 minutes before exercise for an effective dose (150-400mg for a 70kg athlete). Limit habitual consumption to maintain sensitivity. Test during training before a competition.

Key takeaway

Caffeine is a powerful and legal ergogenic agent that improves performance and alertness when consumed strategically.

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