GLOSSARY

Gastric Phase of Digestion describes responses to gastric food entry and presence, overlapping with intestinal responses.

For example, record amount, food form and time before training when assessing a meal; neither a label value nor one blood peak alone establishes complete absorption and use.

Fed and absorptive states involve processing a meal; in the postabsorptive state, meal-derived entry declines and stored fuels contribute more. Fasting is not one exact clock time applicable to every food. Fasted exercise does not mean fuel use stops or guarantee long-term fat loss. Meal timing should fit session goals, tolerance and total daily intake rather than being selected from a state label alone.

Seeing and smelling food can initiate cephalic responses; gastric and intestinal entry also generate neural and hormonal signals. Digestive phases overlap rather than forming completely isolated blocks. Meal responses include movement, secretion and processing, not just hunger sensations. A mixed meal behaves as a combination, so isolated-food timing cannot simply be transferred unchanged to the whole meal or used to predict every nutrient's appearance in circulation.

Circulating appearance reflects intestinal entry and processing before the sampling site; it need not equal absorption rate. Blood concentration also depends on tissue removal. Speed claims require a defined tracer or sampling method. Practical sports value includes sufficient fuel and tolerance, while a higher experimental concentration peak alone does not prove superior performance. Separate delivery, concentration and use when comparing rapidly marketed foods or supplements.

Digestion breaks food into smaller absorbable components; absorption moves them across the gastrointestinal barrier into the body. Transport, storage and tissue use follow. These steps are connected but distinct. For an athlete, a large amount printed on a label establishes intake, not necessarily rapid delivery to muscle or the final amount used. Avoid treating digestion, uptake and performance as interchangeable outcomes.

Gastric emptying moves contents into the duodenum, responding to volume, physical form, energy and intestinal feedback. Fat and meal composition modify the process; no exact time fits all foods. Faster emptying does not necessarily mean greater absorption or better tolerance. Intense exercise and heat can increase discomfort, so meal plans should be rehearsed under conditions resembling the intended event rather than selected by speed claims alone.

For sports use, consider meal size and timing together with fluids, intensity and composition. Large, fiber-rich or fatty meals close to exercise trouble some individuals, but tolerance varies. Changing one factor during training and recording responses helps identify patterns. First-time competition products or broad food exclusions without a replacement plan do not substitute for this practical evaluation and can compromise adequate fueling.