Nutrition in endurance should not be static. Adjusting nutrient intake according to the training cycle is essential to optimize performance, improve recovery, and support physiological adaptations throughout periodization.
What is the training cycle in endurance
In endurance training, periodization organizes stimuli into phases such as base, build, and peak. Each phase has specific goals, requiring strategic nutritional adjustments to match training demands.
Base phase, building aerobic capacity
During the base phase, the focus is on increasing volume and improving metabolic efficiency. Nutrition should prioritize adequate carbohydrate intake without excess, along with sufficient protein to support muscular adaptations. In some contexts, training with low carbohydrate availability can be strategically used to stimulate metabolic adaptations.
Build phase, increasing intensity
As training intensity increases, energy demand also rises. At this stage, carbohydrate intake should be increased and properly distributed throughout the day. Consuming carbohydrates during training becomes important to sustain intensity and preserve glycogen stores. Electrolyte replacement, especially sodium, also becomes more relevant, particularly in longer sessions or hot environments.
Peak phase, optimizing performance
In the peak phase, the goal is to achieve maximum performance with minimal accumulated fatigue. Nutrition should ensure high carbohydrate availability, include carbohydrate loading strategies, and fine tune hydration and electrolyte intake. This is also the ideal time to test strategies and assess gastrointestinal tolerance.
Practical application in the athlete’s routine
Nutritional periodization involves adjusting intake according to the demands of each training session. On lighter days, carbohydrate intake can be lower. On more intense days, it should be increased, including during exercise. During long sessions, attention to hydration and sodium intake is essential. In recovery periods, the focus should be on energy replenishment and adequate protein intake.
Conclusion
Adjusting nutrition to the training cycle is a key strategy in endurance. This approach helps optimize adaptations, improve recovery, and sustain performance over time. More than defining how much to eat, it is essential to align nutrient intake with the specific demands of each training phase.
Reference
Podlogar T, Wallis GA. New horizons in carbohydrate research and application for endurance athletes. Sports Medicine. 2022. https://doi.org/10.1007/s40279-022-01757-1
