Is Glukose useful for Sport?

Glucose is a simple sugar that is rapidly absorbed and can serve as a quick energy source during exercise. It is particularly useful during prolonged endurance activities (>60–90 minutes) to maintain blood glucose levels and delay fatigue. For short, high-intensity efforts (sprints, weightlifting), muscle glycogen stores are usually sufficient, and additional glucose may not provide extra benefit. The evidence for glucose supplementation in sports is strong (human-strong), but most research uses mixed carbohydrate sources rather than pure glucose. Individual factors such as insulin sensitivity, metabolic health, and training status matter. Genetic variants like ACTN3 do not directly affect glucose metabolism. In summary, glucose can be useful for sport, especially during endurance exercise, but it is not a performance enhancer on its own. A balanced diet and proper timing of carbohydrate intake are more important than isolated glucose supplementation.