论文部分内容阅读
从七十年代中期开始,西方世界参加马拉松比赛的人数迅速增加。在纽约、伦敦和格拉斯哥参加马拉松年赛的人数高达两万,在南非,1985年首次举行的九十公里超马拉松赛上,参加人数竟也超过一万人。马拉松运动之所以有如此大的吸引力,至少部分原因是由于,在群众中进行的流行病学普查的结果。这些结果表明:坚持身体锻炼同减少冠心病的发病有关,这一结果可以进一步解释为;有多高水平的身体锻炼,便会有相应水平的抵御冠心病发生的能力。这一观点得到了下述研究的支持;(1)动物实验显示了运动练习能够防止实验导致的动脉粥样硬化;(2)健身运动达到某一阈值时可能防止冠心病的发生;(3)在受过训练的狗和鼠身上发现防止产生室颤的能力提高了。
Since the mid-1970s, there has been a rapid increase in the number of people participating in marathons in the Western world. In New York, London and Glasgow to participate in the marathon annual number of up to 20,000, in South Africa, 1985 first marathon in the 90 km, the attendance actually more than 10,000 people. The reason the marathon is so attractive is, at least in part, due to the results of a popular epidemiological survey carried out among the masses. These results indicate that insisting on physical exercise is associated with reducing the incidence of coronary heart disease. This result can be further explained as: how high the level of physical exercise is, there will be a corresponding level of resistance to coronary heart disease. This view is supported by the following studies: (1) animal experiments show that exercise can prevent experimental-induced atherosclerosis; (2) exercise exercise can prevent the occurrence of coronary heart disease when it reaches a certain threshold; (3) Improved ability to prevent ventricular fibrillation was found in trained dogs and mice.