Endurance activities are always challenging because of longer hours and as the hours roll on, our body demands more energy. As the demand for energy starts to increase, the body simply cannot process fats quickly enough to meet demand and so the use of glucose becomes gradually more predominant. Unlike fat, glucose, in the form of glycogen is stored in exceptionally limited quantities. During high-intensity endurance exercise or performance, glycogen can become severely depleted and energy levels drop significantly, and subsequently, the pace of exercise/performance drops significantly.
Consuming exogenous sources of carbohydrates provides an alternative source of carbohydrates to fuel energy. Therefore, athletes often load them with carbohydrates in the form of carbohydrate sources like sugar-loaded foods or glucose-based sports nutrition products to meet their energy demands in between the races. However, ingesting higher amounts of carbohydrates can create an “over-dose” effect, which can impair performance and affect endurance capacity.
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