Johnson B D, Badr M S, Dempsey J A
Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota.
Clin Chest Med. 1994 Jun;15(2):229-46.
The older adult demonstrates several alterations in the ventilatory response to exercise relative to the young adult. These differences are primarily caused by the aging-induced loss of elastic recoil of the lung, which reduces expiratory airflow rates along the effort-independent portion of the maximal volitional flow-volume envelope. Despite these distinctions in the response to exercise of the aged adult, alveolar ventilation is adequate for carbon dioxide elimination (even during maximal exercise), and arterial oxygen homeostasis is generally maintained.
与年轻人相比，老年人在运动时的通气反应表现出多种变化。这些差异主要是由衰老导致的肺弹性回缩丧失引起的，这会降低最大自主流量-容积曲线中与用力无关部分的呼气气流速率。尽管老年人在运动反应方面存在这些差异，但肺泡通气足以消除二氧化碳（即使在最大运动时），并且通常能维持动脉氧稳态。
