An energy drink is a beverage that provides mental and physical stimulation. A spoonful of sugar in water has the same effect as that of energy drinks, revealed researchers from the University of Bath.
For the study, researchers assessed the impact of endurance exercise on liver glycogen levels. They tested several drinks to see how different sugars could slow the decline of liver glycogen levels, which leads to tiredness.
Their experiment, which used long-distance cyclists as study participants, found both glucose and sucrose can help maintain liver glycogen levels. Both sucrose - in the form of table sugar - and glucose are important carbohydrates, often referred to as simple sugars. However, the researchers did find combining the different sources of sugars improves the rate at which people can absorb them. They warned that glucose-only drinks could produce stomach discomfort and suggested sucrose-based alternatives, or simply sugar in water.
The study is published in the American Journal of Physiology - Endocrinology and Metabolism.