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５７２例正常男女青少年用ＤＭＦ－８６型肺功能仪，２６２例正常男女成人用ＬＲ－８０型流速容量仪测定其最大呼气流量一容积曲线（ＭＥＦＶ或Ｆ－ｖ曲线），并用波速学说分析其Ｆ－ｖ曲线形状形成的力学机理，认为可将Ｆ－Ｖ曲线形状分为平台型、直线型、凸型和凹型四大类。平台型的特点是：恰在顶峰之后有一快速的首次下降；接着为下降缓慢的平台（ｐｌａｔｅａｕ）；然后为第二次快速下降形成的拐点（ｂｕｍｐ）或膝（ｋｎｅｅ）；最后为缓慢下降的尾部，其中可能出现或多或少的小拐点。其余三型都可视为以平台型为中心的各种变异。本研究提示，前人应用波速学说在模型与动物的研究，可以扩展到对正常人Ｆ－Ｖ曲线形状形成的呼吸力学机理的探讨。
572 normal male and female adolescents with DMF-86 type lung function instrument, 262 normal men and women adults with the LR-80-type flow rate capacity of the maximum expiratory flow volume curve (MEFV or F-v curve), and its wave velocity theory analysis F-v curve shape of the formation of the mechanical mechanism that the F-V curve can be divided into platform-shaped, linear, convex and concave four categories. The platform type is characterized by a rapid first drop immediately after the peak; followed by a plateau which slows down; then a bump or knee formed by a second rapid drop; and finally a slowly falling Tail, which may be more or less a small inflection point. The remaining three types can be regarded as a platform-based variety of variations. The present study suggests that previous studies using model velocities and animals in the theory of wave velocity could be extended to explore the mechanics of respiration for the formation of normal F-V curves.