GLOSSARY

Fat Intake for Athletes Table

Fat supports energy intake and essential-fatty-acid supply; no single gram target fits all athletes and all training days.

Fat Intake Periodization adjusts fat provision within a broader training-phase plan. It should support overall energy and nutrient adequacy while considering carbohydrate needs and meal tolerance.

Periodization adjusts nutrition across sessions, days or training phases to support the work and its goals. Carbohydrate can be concentrated around demanding or important sessions while the broader diet still meets energy and nutrient needs. A lower-demand day can also be a recovery or preparation day, so rest does not imply that food or carbohydrate should be removed. Describe what changes, when and why, and evaluate the quality of subsequent training rather than treating variation itself as beneficial.

Training with reduced carbohydrate availability is a specific strategy rather than a synonym for all fasted exercise. Low muscle glycogen, reduced liver glycogen and withholding carbohydrate during a session are different manipulations. Some can alter molecular signaling, but a larger signaling response does not guarantee superior long-term performance. Reduced session quality and inadequate energy supply are relevant tradeoffs. Important high-intensity work and competition often require sufficient carbohydrate, and chronic underfueling should not be presented as a necessary adaptation method.

Carbohydrate requirements vary with the intensity, duration and importance of the work. Daily intake relative to body mass describes a different quantity from an intake rate during exercise, which is commonly expressed per hour. A larger daily target does not mean the same amount should be consumed in every session. Match supply to the schedule, starting stores and practical tolerance, and distinguish grams eaten from grams absorbed or oxidized when discussing a fueling plan.