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Kokyu to Junkan Volume 37, Issue 5 （May 1989）

呼吸と循環 37巻5号（1989年5月発行）

Japanese English

研究

Borg指数，呼気分析，血中乳酸値からみた心筋梗塞症患者の運動療法効果の判定 Efficacy of home exercise program in a convalescent phase of acute myocardial infarction evaluated by Borg's indices, expiratory gas analysis and blood lactate 上嶋健治 ¹ , 斎藤宗靖 ¹ , 下原篤司 ¹ , 佐藤文敏 ¹ , 飯田英隆 ¹ , 内本定彦 ¹ , 河口正雄 ¹ , 宮島和之 ¹ , 深見健一 ¹ , 住吉徹哉 ¹ , 土師一夫 ¹ , 平盛勝彦 ¹ Kenji Ueshima ¹ , Muneyasu Saito ¹ , Atsushi Shimohara ¹ , Fumitoshi Sato ¹ , Hidetaka Iida ¹ , Sadahiko Uchimoto ¹ , Masao Kawaguchi ¹ , Kazuyuki Miyajima ¹ , Kenichi Fukami ¹ , Tetsuya Sumiyoshi ¹ , Kazuo Haze ¹ , Katsuhiko Hiramori ¹ ¹国立循環器病センター心臓内科 ¹Cardiology Division, National Cardiovascular Center pp.523-527

発行日 1989年5月15日 Published Date 1989/5/15

DOI https://doi.org/10.11477/mf.1404205475

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Abstract 文献概要
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　我々はすでに，Borgが提唱した自覚運動強度^1）（rateof perceived exertion；RPE以下Borg指数）が運動中の自覚症状を評価するうえで，良好な再現性と定量性を有することを報告した^2）。今回著者らの施設が施行している急性心筋梗塞症患者の回復期在宅運動療法^3）の効果を運動負荷試験中の自覚症状から評価することを目的とし，運動療法前後に行った呼気ガス分析併用運動負荷試験時のBorg指数の変化と他の運動諸指標との関係を検討した。

　The Borg's indices, the rate of perceived exertion have been widely accepted to evaluate subjective symptoms semi-quantitatively in exercise tests. Weapplied the indices to evaluate the efficacy of our home exercise program in patients with acute myocardial infarction.

　Eighty-five patients were entered in our home exercise program after their discharge from the hospital. This program consisted of eveyday 2 km walk-jog exercise for 1 month keeping their heart rate at 100-110/min during the exercise. Before and 1 month after their discharge, they underwent treadmill exercise tests with expiratory gas analysis and a measurement of blood lactate.

　In the treadmil tests performed before and after the training, V_O2 and heart rate increased linearly with Borg's indices, however V_E and blood lactate had disproportionate increases after Borg's 13 which is considered to be the anaerobic threshold (AT). In fact, AT measured individually by expiratory gas analysis and blood lactate, appeared at Borg's 13 in 53% of the patients. After 1 month physical training, V_O2 and heart rate significantly increased at the same Borg's indices, but there was no significant changes in blood lactate at the same Borg's score before and after the training.

　These results suggest that, in patiens with acute myocardial infarction, exercise performance significantly increased at any score of subjective symptoms and that Borg's indices may reflect the blood lactate levels.

　It is concluded that Borg's indices, closely related to the dynamics of blood lactate, are not only useful in quantifying subjective symptoms but also to estimate the efficacy of physical training.