2023 Fiscal Year Final Research Report
Study on the effect of expiratory muscle training on respiratory muscle fatigue in patients with chronic obstructive pulmonary disease
| Project/Area Number |
20K19431
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 59010:Rehabilitation science-related
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| Research Institution | Tokoha University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 呼吸筋疲労 / 呼気筋トレーニング / 慢性閉塞性肺疾患 / 呼吸筋力 / 呼吸筋筋電図 / 表面筋電図 / 呼吸筋 / 呼吸困難感 |
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| Outline of Final Research Achievements |
The purpose of this study was to examine the effects of expiratory muscle training on respiratory muscle fatigue.
This study showed that expiratory muscle training increased the expiratory muscle strength and attenuated respiratory muscle fatigue and respiratory distress caused by inspiratory load. Respiratory muscle fatigue causes both inspiratory and expiratory muscle fatigue, but expiratory muscle training was effective in inhibiting both. Additionally, the state of muscle fatigue of the various respiratory muscles was evaluated from the electromyogram frequency analysis. It became evident that the fatigue tolerance of the rectus abdominis, external oblique, and internal oblique, which are the expiratory muscles, and the sternocleidomastoid, which is the inspiratory accessory muscle, was improved.
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| Free Research Field |
理学療法学分野（内部障害）、健康科学分野、保健医療学分野
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| Academic Significance and Societal Importance of the Research Achievements |
呼吸リハビリテーションの構成要素である呼吸筋トレーニングは、慢性閉塞性肺疾患の呼吸筋疲労に対する治療法として利用されている。特に、吸気筋トレーニングは呼吸困難の改善に加え、吸気筋力、運動耐容能、そして健康関連QOLへの効果が示されている一方で、呼吸筋疲労への効果については明らかになっていない。
今回、呼気筋トレーニングにより呼気筋力の増加を介して吸気負荷中の吸気筋と呼気筋の呼吸筋疲労をどちらも抑制し、呼吸困難感の軽減においても効果が得られた結果は、慢性閉塞性肺疾患における呼吸筋疲労や呼吸困難の改善、予防に有効な可能性がある。
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