UCI Sports Nutrition Project: Special Environments

Area of Science:

• Sports Science
• Environmental Physiology
• Nutritional Science

Background:

• Elite cyclists train in extreme environments (heat, cold, altitude), increasingly common due to climate change.
• Altitude and heat training enhance performance and acclimatization, but increase physiological stress, impacting energy and carbohydrate metabolism.
• Understanding these environmental impacts is crucial for optimizing athletic performance.

Purpose of the Study:

• To provide a Union Cycliste Internationale (UCI) consensus on nutrition for cycling in extreme environments.
• To explore tailored nutrition and hydration strategies to mitigate the effects of heat, cold, and altitude on cyclists.
• To offer evidence-based recommendations for optimizing performance and adaptation.

Main Methods:

• Review of scientific literature on environmental stressors and their physiological effects on cyclists.
• Examination of hydration, energy expenditure, and metabolic responses to heat, cold, and altitude.
• Analysis of macro- and micronutrient considerations, fluid balance, and supplementation strategies.

Main Results:

• Extreme environments increase physiological stress, altering energy and carbohydrate oxidation rates.
• Heat, cold, and altitude significantly affect hydration status, energy expenditure, and metabolism in cyclists.
• Tailored nutrition and hydration strategies are essential for managing these effects.

Conclusions:

• Evidence-based nutrition and fluid recommendations are provided for optimizing cycling performance in extreme conditions.
• Practical guidance on pre-, during-, and post-exercise nutrition and hydration is offered.
• Strategies support adaptation to environmental stresses, helping cyclists maintain peak performance.