GLOSSARY

On-Course Nutrition describes nutrition consumed or accessed along the competition route. The course, pace and support arrangements shape practical choices.

A fueling plan must survive practical constraints: carrying capacity, access to bottles, aid-station spacing, package opening, food safety and the opportunity to swallow while moving. Rehearsal helps identify a plan that is nutritionally adequate but impractical at race pace. Check what the event actually provides and prepare workable alternatives. Travel and tournaments can also change meal timing and food access. A slightly simpler plan followed consistently can be more useful than an ambitious calculation that cannot be executed.

Sports foods provide nutrients in forms designed for convenient use around exercise. Gels, chews, bars and drinks differ in carbohydrate amount, fluid needs, texture, fat, fiber and additional ingredients. Branding does not establish superiority over ordinary food, and a gel need not contain every nutrient required for recovery. Check the actual serving and label, including caffeine where present. Choose the form that is practical and tolerated in the planned activity rather than assuming that all sports products are interchangeable.

Liquid, solid and semisolid sources can all contribute carbohydrate, with digestion and tolerance influenced by their composition and the exercise context. A drink may help combine fluid and fuel, while solid food can add variety during longer events. A concentrated gel may need to be coordinated with water according to its formulation and the plan. Combining forms should account for the total intake rather than counting each product in isolation or assuming liquid carbohydrate bypasses digestion and absorption limits.

Gut training means practicing the intended food and fluid strategy during suitable training sessions and progressing according to tolerance. Repeated exposure may improve comfort or handling, but symptom improvement does not directly prove increased transporter expression in an individual. Glucose and fructose transport involve different proteins and their adaptation is a specific research question. Record actual intake, conditions and symptoms. A very high intake used successfully by one athlete should not be treated as the starting requirement for everyone.

Fluid planning should consider sweat losses, conditions, tolerance and opportunities to drink. Carbohydrate and fluid needs can differ, so a single beverage may not meet both without adjustment. Excessive drinking can also be harmful; more fluid is not always better. Sodium provision may be relevant in selected prolonged or high-loss situations, but it does not make unlimited drinking safe. Practice the combined food-and-fluid plan in training and evaluate actual intake and symptoms rather than relying only on a product label.

Food timing is organized around the next session, the time since the previous meal and the recovery interval. Carbohydrate supports fuel availability, protein contributes to tissue repair, and meal size, fat and fiber influence comfort. The same schedule does not suit every athlete. A narrow, universal anabolic deadline is an oversimplification, whereas prompt recovery eating becomes more useful when sessions are close together or prior intake has been limited. Total intake remains a central part of the plan.