前几年美国一些报刊、杂志不断发表消极文章,议论长跑运动员心脏病发作,踝关节和膝关节受伤等情况,这无疑是给跑步热泼冷水。因此许多人逐渐把跑步运动看成是一种不大不小的危险。今天,虽然美国跑步运动的昌盛期已过去了,但是它的意义和影响并未消失。美国跑步数据中心统计,现在还有将近七百万人从事这项运动。其它一些信息表明,可能比这一数字还要高些。美国人已不再把跑 A few years ago in the United States some newspapers and magazines continue to publish negative articles on long-distance runners talking about heart attacks, ankle and knee injuries, etc., which undoubtedly run hot splashing cold water. Therefore, many people gradually consider running exercise as a modest danger. Today, although the prosperous period of American running has passed, its significance and influence have not disappeared. According to the U.S. running data center, there are still nearly seven million people in the sport. Some other information suggests that it may be even higher than this figure. Americans are no longer running