Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Carbohydrate blends are scientifically validated for their role in supporting or treating fatigue, particularly in the context of physical exertion and exercise. Carbohydrates are the body's primary and most efficient source of energy, especially for muscles and the central nervous system. Numerous studies have demonstrated that carbohydrate ingestion—either prior to, during, or after exercise—can delay the onset of fatigue, enhance endurance, and improve overall exercise performance. This is because carbohydrates help maintain blood glucose levels and replenish muscle glycogen stores, both of which are critical for sustained physical activity.

For example, research published in journals such as the Journal of Applied Physiology and Sports Medicine consistently shows that athletes who consume a carbohydrate blend during prolonged exercise experience reduced feelings of fatigue and can maintain higher intensities for longer periods. The efficacy of carbohydrate blends (often a mix of glucose, fructose, and maltodextrin) compared to single-source carbohydrates is also well-supported, as different sugars utilize distinct intestinal transporters, facilitating greater total carbohydrate absorption and oxidation rates.

Outside of exercise, carbohydrate intake is also known to quickly alleviate symptoms of fatigue in hypoglycemic states, such as in individuals with diabetes or after fasting. However, the benefits for chronic fatigue unrelated to physical exertion are less clear, and excessive intake of simple carbohydrates may have negative health consequences. Nonetheless, for exercise-induced fatigue, the use of carbohydrate blends is strongly supported by scientific evidence.

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