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andydl007 发表于 2012-3-3 12:59  5 K' c( r) z1 h( a0 p
这个观点不敢苟同，要不再查查资料？反正我最近看到的资料，好像是肌肉优先于脂肪燃烧掉，尤其是大量有氧 ...
英文资料权威，首先是烧糖原glycogen，然后是脂肪，最后脂肪不够了才会分解肌肉中的蛋白质。Glucose, fat and protein. Even so, starvation always works eventually and the body starts to break down its own tissue for fuel. Stored carbohydrate called glycogen is quickly used up, then goes the fat stored under the skin and around the internal organs. Protein in muscle is then broken down to create glucose to keep the brain working and you conscious.
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Fat and glucose are the body’s two main energy sources. Fat you know well, glucose comes mainly from carbohydrate foods like rice and bread and potatoes and protein is supplied mainly by meat and beans and dairy products. The amino acid building blocks of protein foods can be converted to glucose in emergencies. Your body always burns a mix of fat and glucose except at very high intensities, and the ratio of the fat and glucose in 'the burn' varies with intensity and time of exercise. http://weighttraining.about.com/ ... ning/a/fat_burn.htm |
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