The effect of expiratory muscle training on pulmonary function in normal subjects
The effect of expiratory muscle training on pulmonary function in normal subjects
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DOI：
10.1589/jpts.19.197
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发表时间：
2007-08-01
影响因子：
--
通讯作者：
Sasaki, Makoto
中科院分区：
文献类型：
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作者：
Sasaki, Makoto
本研究的目的是研究呼气肌训练（EMT）对肺功能的影响，包括咳嗽峰值流量（PCF），通过在自然或快速流速下对健康志愿者进行EMT。受试者包括33名健康志愿者，随机分为3组：自然呼气流速下的EMT（NFR组）;快速呼气流速下的EMT（FFR组）;以及无EMT（对照组）。对于NFR和FFR组，受试者使用呼气肌训练装置在30%最大呼气肌压（PE，a，;）下训练15分钟，每天两次，每周7天，持续4周。训练前后分别测定PEmax和肺功能。对于NFR和FFR组，PEmax显著增加，但肺功能（包括PCF）无变化。此外，在NFR和FFR组中，PEmax变化与肺功能参数变化之间没有显著相关性。总之，自然或快速流速EMT增加PEmax，但两种技术均未改善肺功能，包括PCF。因此，EMT的速度特异性肌肉强化并不会导致与呼气流量相关的肺功能变化。
The objective of the present study was to investigate the effects of expiratory muscle training (EMT) on pulmonary function, including peak cough flow (PCF), by administering EMT at a natural or fast flow rate to healthy volunteers. Subjects comprised 33 healthy volunteers randomly divided into 3 groups: EMT at a natural expiratory flow rate (NFR group); EMT at a fast expiratory flow rate (FFR group); and no EMT (Control group). For the NFR and FFR groups, subjects trained using a device for expiratory muscle training at 30% maximal expiratory muscle pressure (PE,a,;) for 15 min twice daily, 7 days a week for 4 weeks. Before and after training, PEmax and pulmonary function were measured. For the NFR and FFR groups, PEmax significantly increased but pulmonary function, including PCF, was unchanged. Moreover, no significant correlation was seen between changes in PEmax and changes in pulmonary function parameters in the NFR and FFR groups. In conclusion, natural or fast flow rate EMT increases PEmax, but neither technique improves pulmonary function, including PCF. Thus, velocity-specific muscle strengthening by EMT does not contribute to changes in pulmonary function related to expiratory flow.