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。

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.

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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。

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.

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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。

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.

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