GLOSSARY

Diet–Exercise Interaction describes the interaction between diet and exercise in determining physiological and performance responses. Their combined effects are context-dependent rather than simply additive under every condition.

For example, a demanding training week calls for a plan that supplies energy and carbohydrate while keeping protein-containing meals practical. Review whether the athlete can complete the intended work and recover, then adjust food access and portions. A successful plan is demonstrated by its usefulness in the actual schedule, not by a more complicated list of products.

Sports nutrition connects food and fluid provision with training, competition, adaptation and health. The appropriate plan depends on the sport, event duration, athlete, environment and available eating opportunities. Adequate energy and nutrient intake form the foundation, while timing and specialized products solve particular problems. A strategy supported in one exercise model is not automatically optimal for every sport. The useful outcome is the athlete's ability to train, recover and perform under the actual conditions.

Energy requirements depend on body size and composition, activity, life stage and physiological circumstances. A maintenance estimate is a starting point for a defined situation rather than a permanent personal calorie ceiling. Training load, recovery, appetite and changes in body mass help evaluate its usefulness. Growth, illness or a change in training schedule may require reassessment. Adequate energy also needs appropriate carbohydrate, protein, fat and micronutrient provision; matching a calorie total alone does not guarantee a balanced sports diet.