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1·Of course, one of the references in the field remains the guidelines of the American College of Chest Physicians (ACCP), which were updated in 2008.

当然，该领域的参考资料之一仍然是美国胸科医师学会（ACCP）指南，该指南于2008年更新。

2·That said, when the American College of Chest Physicians issues guidelines it also grades them based on the quality of the evidence used to generate its recommendations.

当美国胸内科学院公布各种指导文件时，还会根据证据的质量对之进行分级。

3·One study of 4800 people by the American College of Chest Physicians found that lung function peaks (at about 20% higher) during this period, with midday exercise returning the lowest lung function.

美国胸科医师学会对4800人进行的一项研究表明，肺功能在这段时间内达到顶峰(比平常高出20%)，而在中午的时候运动，肺功能则处在最低水平。