临床主要表现为运动性呼吸困难，动则气短、干咳、喘憋。
The clinical performance for the movement of difficulty in breathing, dynamic, shortness of breath, dry cough, Asthmatic.
目的：探讨主观用力呼吸困难不宜作为限制慢性阻塞性肺疾病(COPD)患者运动的标准。
Objective: Our aim was to prove that exertional dyspnea is not a limitation for patients with chronic obstructive pulmonary disease (COPD) to exercise.
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