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从自行车发明至今仅仅200年的历史,但它却成为大众化的交通工具。许多国家已提倡用自行车为交通工具,以减轻汽车尾气污染的公害,并以此来锻炼身体。尤其是近几年来,利用上下班骑车进行健身活动已蔚然成风。 骑自行车对人体的作用,可以与健身跑、游泳相比,它是一种周期性的需氧运动,骑自行车对增强与吸气有
Bicycles were invented only 200 years ago, but it has become a popular means of transport. Many countries have advocated the use of bicycles as a means of transport, in order to reduce the pollution of automobile exhaust pollution, and as a result, to exercise. Especially in recent years, the use of commuter cycling fitness activities has become common practice. Cycling on the role of the human body can be compared with fitness running, swimming, it is a cyclical aerobic exercise, cycling to enhance and inspiratory have