Effects of low workload respiratory training with steam inhalation on lung function in stable asthma: A controlled clinical study

IF 1.3 4区医学 Q4 PHYSIOLOGY

Clinical Physiology and Functional Imaging Pub Date : 2023-09-25 DOI:10.1111/cpf.12856

Ilpo Kuronen, Jukka Heinijoki, Anssi Sovijärvi

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Abstract

To investigate effects of low workload respiratory muscle training (RMT) on respiratory muscle power and lung function in asthmatics, we recruited asthmatic persons who performed a 4-week training programme. The training included 20 daily ex- and inhalations with counter pressure 30% from the individual maximal expiratory pressure (MEP). Lung function was measured before and after the training programme and a follow-up period. The study also included several subjective endpoints for respiratory symptoms. A significant increase in a training group (n = 27) compared with a control group (n = 20) was seen in MEP (+12.4%, vs. +3.5%, p = 0.086), maximal inspiratory pressure (MIP) (+21.1% vs. +0.82%, p = 0.023), slow vital capacity (VC) (+3.7% vs. +1.5%, p = 0.023) and in forced expiratory time (FET, +15.5%, vs. −5.0%, p = 0.022). After being a control for group A, also group B performed similar RMT as group A. In the combined group (A and B, n = 47) MEP (11.3%, p = 0.003), MIP (19.73%, p < 0.001), VC (4.1%, p < 0.001) and FET (14.7%, p < 0.001) increased significantly from the baseline. Changes in other lung function variables were not indicative. On a scale of 1–5, the subjects perceived improvement in reduction of mucus secretion in the airways (median 3, p < 0.001), alleviation of coughing (median 3, p < 0.001) and reduction in dyspnoea (median 3, p < 0.001). As a conclusion, low workload respiratory training of 4 weeks improved respiratory muscle power and increased VC in patients with stable asthma.

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蒸汽吸入低负荷呼吸训练对稳定期哮喘患者肺功能的影响：一项对照临床研究。

为了研究低负荷呼吸肌训练（RMT）对哮喘患者呼吸肌力量和肺功能的影响，我们招募了进行4周训练的哮喘患者。训练包括每天20次呼气和吸气，反压为个人最大呼气压力（MEP）的30%。在训练计划和随访期前后测量肺功能。该研究还包括呼吸系统症状的几个主观终点。训练组（n = 27）与对照组（n = 20）在MEP中可见（+12.4%，对+3.5%，p = 0.086），最大吸气压力（MIP）（+21.1%对+0.82%，p = 0.023），慢肺活量（VC）（+3.7%对+1.5%，p = 0.023）和用力呼气时间（FET，+15.5%，vs.-5.0%，p = 0.022）。在作为a组的对照后，B组也进行了与a组相似的RMT。在组合组（a和B，n = 47）MEP（11.3%，p = 0.003）、MIP（19.73%，p

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来源期刊

Clinical Physiology and Functional Imaging 医学-生理学

CiteScore

3.40

自引率

5.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Clinical Physiology and Functional Imaging publishes reports on clinical and experimental research pertinent to human physiology in health and disease. The scope of the Journal is very broad, covering all aspects of the regulatory system in the cardiovascular, renal and pulmonary systems with special emphasis on methodological aspects. The focus for the journal is, however, work that has potential clinical relevance. The Journal also features review articles on recent front-line research within these fields of interest. Covered by the major abstracting services including Current Contents and Science Citation Index, Clinical Physiology and Functional Imaging plays an important role in providing effective and productive communication among clinical physiologists world-wide.