由于宗教和经济方面的原因。食素的习惯在世界各国都很普遍。在美国,人们选择素食主要出于哲学上的动机。因此食素经常可以反映出一个人对某种生活方式的信奉,同时也常与家庭的教育和影响有关。 素食尤其是半素食,营养是很丰富的。虽然优秀运动员中尝度食素,但对美国高水平运动员食素方面的研究还是很有限的。调查表明,一些运动员如女子自行车运动员,正在减少肉类食品的消费而增加植物食品的摄入。但这种倾向在一些靠较重体重竞争的运动员中,如橄榄球运动员、举重运动员和曲棍球运动员还是不明显的。一个运动员若摄入营养丰富、调配合理的素食,就可以保证他正常的训练比赛:一个运动员若消费一种没有经过精心调配的素食或这种素食仅包括有限的几个品种,那么他就会面临着营养不良、闭经和骨瘦如柴的危险。 Due to religious and economic reasons. The habit of vegetarianism is common in all countries of the world. In the United States, people choose to eat vegetarian mainly because of their philosophical motives. Therefore, vegetarianism often reflects one’s belief in a certain lifestyle, and is often associated with family education and influence. Vegetarian especially semi-vegetarian, nutrition is very rich. Although the elite athletes taste a vegetarian diet, the study on the vegetarian diet in American high-level athletes is still very limited. Surveys show that some athletes, such as female cyclists, are reducing the consumption of meat products and increasing the intake of plant foods. But such a tendency is not obvious in some athletes competing on heavier weights, such as rugby players, weightlifters and hockey players. An athlete who assists in his normal training competition if he or she is nutritionally nutritious and well-balanced is an athlete who consumes an unadulterated vegetarian diet or if the vegetarian diet includes only a limited number of varieties Faced with the dangers of malnutrition, amenorrhea and skinnyness.