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Nutritional function of carbohydrates in sports are those?

Shmilyxj212010-02-09 12:01:22 +0000 #1

Hao Wen2010-02-09 12:04:13 +0000 #2
in the current sports training and competition, the middle-distance speed endurance sports such as projects have become increasingly demanding. Speed endurance characteristics of the project is based on the aerobic metabolism of glucose energy supply mainly to the strength-based. Sugar in aerobic, anaerobic circumstances, can be broken down and the supply of energy, energy supply in the three substances (sugar, protein, fat) in a fast metabolism, oxygen consumption of less significant features, so carbohydrate supplement endurance training and competition, the relative protein and fatty substances, of a greater contribution to training and competition.

In motion when the sugar will be actively involved in energy supply, 1-2-minute high-intensity exercise, muscle glycogen is mainly involved in energy supply, which is the proportion of sugar for energy can reach about 95%, 15-30 minutes of moderate-intensity exercise, muscle glycogen consumption is almost finished on by the decomposition of blood glucose and liver glycogen to provide energy. 1-2 hours or more of the movement, the number of sugar reduced the proportion of energy supply has gradually decreased, while the increase in the proportion of fat energy supply can be achieved by about 80%. In general, the shorter the time, intensity, the greater the proportion of sugar to provide energy greater. The longer, lower intensity, the greater the proportion of fat function. For example, a slower pace to run 30 minutes (9.5 minutes / km), of which about 60% of the energy supply comes from fat, while at 5 min / km pace to run 30 minutes, only 40% of the energy supply from fat, , and the remaining by the majority of sugar to provide energy. This is why experts have stressed that a long period of low-intensity exercise to lose weight reasons.



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