| Project/Area Number |
12832048
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Institution | International University of Health and Welfare |
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Principal Investigator |
OKUBO Takao International University of Health and Welfare, School of Health Scinece, Professor, 保健学部, 教授 (40006705)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥3,000,000 (Direct Cost: ¥3,000,000)
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| Keywords | Respiratory failure / expiratory muscle fatigue / Chronic obstructive pulmonary diseases / expiratory resistive load / Abdominal muscle load by contractive movements / Respiratory effort sensation / Maximal effort expiratory mouth pressure / Electromyographic records of repiratory muscles / 呼吸努力感 / 呼吸リハビリテーション / 腹筋運動 / 最大呼気口腔内圧 / 筋の電気的活動 / Borg Scale / 呼吸筋疲労 / 呼気閉塞 / 呼気筋トレーニング / 腹筋トレーニング / 呼吸困難感 / 閾値呼気抵抗負荷 |
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| Research Abstract |
Expiratory muscle fatigue (EMF) is the most important functional disturbance to develop the respiratory failure in chronic obstructive pulmonary diseases. [PURPOSE] To develop the rehabilitation system of EMF, we have studied (1) which muscles are most responsible for loaded expiration and develop the fatigue, (2) for the purpose of training expiratory muscles, ways of mechanical loads on expiratory muscles were compared between expiratory resistive load and repetition of abdominal contractive movement. [RESULTS] (1) The electromyographic (EMG) activity of M. externus obliqus abdominis revealed high value from low expiratory resistive load, but other muscles (M. rectus abdominis, M. sternocleidomastoides, M. trapezius) does not reveal significant activity according to the increasing expiratory loads. On the other hand, EMG of sternoclidemastoideus revealed the highest value in the inspiratory load; all muscles showed a linear response according to the increasing load. (2) In the group of abdominal muscle loading by curl up, the decrease of P_Emax was smallest, on the contrarily sensation of the abdominal muscle fatigue was increased significantly.
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