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有些人很容易发胖,而另一些人却毫不费力地保持苗条身材。据研究,原因可能是这两种人的肌纤维有所不同。骨骼肌中不同类型的肌纤维的相对比例可能是造成过度肥胖的因素之一。 骨骼肌由多种肌纤维组成,是人体的最大组织。其中慢肌纤维(或称红肌纤维)的主要能源,来自脂肪酸,即脂肪成分。由于肌纤维中贮有脂肪,所以慢肌纤维比较能抗疲劳。快肌纤维(或称白肌纤维)的能量主要来自葡萄糖。
Some people can get fat easily, while others can effortlessly stay slim. According to the study, the reason may be that the two kinds of people’s muscle fibers are different. The relative proportions of different types of muscle fibers in skeletal muscle may be one of the contributing factors to obesity. Skeletal muscle consists of a variety of muscle fibers, is the largest body of the human body. One of the main energy of slow muscle fibers (or red muscle fibers), from fatty acids, that is, fat composition. Due to the fat stored in muscle fibers, so slow muscle fibers more resistant to fatigue. Fast muscle fiber (or white muscle fiber) energy mainly from glucose.