Carbohydrates

Types of Carbohydrate Supplements

Depending on their absorption rate and molecular structure, carbohydrate supplements are categorized into four main types:

• fast-acting (simple)
• complex (slow-release)
• highly branched (intermediate)
• complex carbohydrate-protein blends.

The choice of a specific supplement depends on your training goals, the duration of physical activity, and your digestive sensitivity.

Maltodextrin

An easily digestible polysaccharide found in most mass-gainers, isotonic drinks, and energy gels, used to rapidly replenish glycogen stores during or immediately after intense workouts. It has a glycemic index of approximately 105–136. Maltodextrin is produced through the enzymatic breakdown of plant-based starches (typically from corn, potatoes, rice, or wheat). Despite its complex structure, it is broken down and absorbed almost as quickly as glucose, yet it is less sweet and less likely to cause gastrointestinal discomfort.

Dextrose

A basic monosaccharide—the simplest form of carbohydrate—which is absorbed as rapidly as possible without requiring prior breakdown. It has a glycemic index of 100 and a caloric value of approximately 360–400 kcal per 100 g. Dextrose is used in isotonic drinks and gels for endurance activities. Consuming it immediately after exercise triggers a sharp spike in insulin, which helps to rapidly replenish muscle glycogen stores and suppress catabolism (muscle breakdown). While inexpensive and effective, large doses of dextrose can cause a feeling of heaviness in the stomach.

Complexes of Fast and Complex Carbohydrates

A carbohydrate complex contains multiple sources of carbohydrates with varying absorption rates, providing the body with a sustained, gradual supply of energy. This helps prevent sharp spikes and subsequent crashes in blood sugar levels.

Why Athletes Need Carbohydrates

For athletes, carbohydrates serve as the primary source of "rapid" fuel (ATP) required for muscle function, brain activity, and effective recovery following physical exertion.

Energy During Workouts

The body converts ingested carbohydrates into glycogen stores in the muscles and liver. During strength training, sprints, or high-intensity cardio, muscles primarily utilize this glycogen, as it can be broken down into energy much faster than fats.

Recovery After Exertion

Consuming carbohydrates post-workout triggers the release of insulin—a potent anabolic hormone that suppresses the stress hormone cortisol and "opens up" muscle cells to absorb amino acids and creatine.

How to Use Carbohydrate Supplements

The timing of carbohydrate supplementation is often synchronized with the training regimen, based on how quickly the body absorbs them:

• Before a workout: Slow-digesting carbohydrates (such as palatinose or oat powder) help maintain stable energy levels.
• During a workout: Specialized carbohydrate-based drinks help sustain performance.
• After a workout: Fast-digesting carbohydrates (like maltodextrin or dextrose) or "gainers" are combined with protein sources to replenish muscle glycogen.

Carbohydrate supplements should be thoroughly mixed with water to ensure digestive comfort, and their caloric content should be factored into your total daily intake.