骑自行车对身体有益,可延寿六年_BEC初级作文

骑自行车对身体有益,可延寿六年

高强度运动会造成心血管疾病的担忧源自少数几项对马拉松运动员的研究。通过高级成像及其他测量工具，研究发现比赛结束后运动员的心脏有受损迹象，致使一些医生担心这类极限运动可能有弊端。

But those findings were likely normal wear and tear that occurs after strenuous physical activity when muscles are pushed and a greater volume of blood courses through the heart, and they go away after the body recovers, as some previous studies have shown, said Alfred Bove, professor emeritus at Temple University in Philadelphia and a former president of the American College of Cardiology, who wasn't involved in Tuesday's study.

费城天普大学(Temple University)名誉教授、曾任美国心脏病学会(American College of Cardiology)会长的阿尔弗雷德・博夫(Alfred Bove)说，但这些研究结果可能只是正常的慢性劳损，部分以往研究显示，高强度的身体活动后，肌肉会受到挤压，流过心脏的血液量也会增加，在身体恢复后就会消失。博夫并未参与9月3日的研究发布会。

'Now that we have better windows into physiology, we're beginning to see things we don't understand,' he said.

他说：“现在有了更好的研究生理学的窗口，我们开始逐渐了解不懂的东西了。”

Such changes may be more easily observed using new imaging and measurement tools. And, many findings about the heart are based on sick patients and shouldn't necessarily be extrapolated to healthy athletes, according to Dr. Bove.