陳旧性心筋梗塞症の低温・高温環境における定量的運動負荷試験の検討

陳旧性心筋梗塞患者25例に定量的運動負荷試験を低温(15℃), 常温(25℃), 高温(35℃)環境内で実施し, 環境温が運動耐容量, 心機能におよぼす影響について比較検討した. 運動耐容量は15°, 35℃と比べ, 25℃で大きい傾向となった. 低温環境の運動負荷で期外収縮の散発, 頻発が常温よりも多く出現し, 特に高齢者, 入院時重症例, 多枝病変例に多く生じた. また, 安静時収縮期血圧の上昇, 酸素摂取量の増加も認められた. 一方, 高温環境では常温よりも心拍数の増加が安静時, 運動中に認められた. 常温と比べ, 低温, 高温環境での運動は心筋梗塞患者の心機能に大きな影響をおよぼすと考...

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Published inリハビリテーション医学 Vol. 21; no. 5; pp. 333 - 340
Main Authors 桑原敏樹, 丸岡隆芳, 内田宏子, 荏原包臣, 内島弘, 長谷川武志, 藤田良範, 新谷博一, 田中正敏, 吉田敬一
Format Journal Article
LanguageJapanese
Published 日本リハビリテーション医学会 1984
社団法人日本リハビリテーション医学会
The Japanese Association of Rehabilitation Medicine
Subjects
心筋梗塞症
環境温度
Online AccessGet full text
ISSN0034-351X

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Abstract 陳旧性心筋梗塞患者25例に定量的運動負荷試験を低温(15℃), 常温(25℃), 高温(35℃)環境内で実施し, 環境温が運動耐容量, 心機能におよぼす影響について比較検討した. 運動耐容量は15°, 35℃と比べ, 25℃で大きい傾向となった. 低温環境の運動負荷で期外収縮の散発, 頻発が常温よりも多く出現し, 特に高齢者, 入院時重症例, 多枝病変例に多く生じた. また, 安静時収縮期血圧の上昇, 酸素摂取量の増加も認められた. 一方, 高温環境では常温よりも心拍数の増加が安静時, 運動中に認められた. 常温と比べ, 低温, 高温環境での運動は心筋梗塞患者の心機能に大きな影響をおよぼすと考えられた.
AbstractList 陳旧性心筋梗塞患者25例に定量的運動負荷試験を低温(15℃), 常温(25℃), 高温(35℃)環境内で実施し, 環境温が運動耐容量, 心機能におよぼす影響について比較検討した. 運動耐容量は15°, 35℃と比べ, 25℃で大きい傾向となった. 低温環境の運動負荷で期外収縮の散発, 頻発が常温よりも多く出現し, 特に高齢者, 入院時重症例, 多枝病変例に多く生じた. また, 安静時収縮期血圧の上昇, 酸素摂取量の増加も認められた. 一方, 高温環境では常温よりも心拍数の増加が安静時, 運動中に認められた. 常温と比べ, 低温, 高温環境での運動は心筋梗塞患者の心機能に大きな影響をおよぼすと考えられた.
陳旧性心筋梗塞患者25例に定量的運動負荷試験を低温(15℃)・常温(25℃)・高温(35℃)環境内で実施し, 環境温が運動耐容量, 心機能におよぼす影響について比較検討した. 運動耐容量は15°, 35℃と比べ, 25℃で大きい傾向となった. 低温環境の運動負荷で期外収縮の散発・頻発が常温よりも多く出現し, 特に高齢者, 入院時重症例, 多枝病変例に多く生じた. また, 安静時収縮期血圧の上昇, 酸素摂取量の増加も認められた. 一方, 高温環境では常温よりも心拍数の増加が安静時, 運動中に認められた. 常温と比べ, 低温・高温環境での運動は心筋梗塞患者の心機能に大きな影響をおよぼすと考えられた. Exercise tests were carried out on patients with histories of myocardial infarction under hot, cold, and comfortable environmental temperatures to examine the influence of temperature on work capacity and cardiac function. The subjects were 25 male patients, whose average age was 54.0 years old and whose myocardial infarctions occurred from 2 to 36 months before the study (MI group), and 5 healthy adult males whose average age was 42.6 years old (N group). The environmental temperatures were fixed at 15℃, 25℃, and 35℃ in an artificial climate chamber. A bicycle ergometer test was performed until certain signs appeared requireing discontinuation of the test in the artificial climate chamber.The mean exercise duration tended to be the longest at 25℃ for the MI group and at 15℃ for the N group.At 15℃, most of the N group discontinued the exercise because of fatique in the legs, while discontinuation at 35℃ was usually because the heart rate reached a target value. In exercise of the NI group at 15℃, discontinuations because of fatigue in the legs were few, but discontinuations because of frequent extrasystoles occurred more often. At 35℃ and 15℃, as compared to the situation at 25℃, more patients showed ST changes in the ECG deviating 0.2mV or more from the resting level. In the MI group, the heart rate at rest or at a given exercise level was significantly higher at 35℃ than at 25℃ and 15℃, and maximum heart rate during exercise showed the same tendency. Systolic blood pressure at rest was significantly highest at 15℃ in the MI group as well as in the N group, but maximum systolic blood pressure during exercise tended to be the highest at 25℃ in the MI group and at 15℃ in the N group. In both groups, maxiumu oxygen uptake during exercise increased significantly more at 15℃ than at 25℃ or 35℃. During physical activity of patients with myocardial infarction, heart rate showed greater changes in the hot environment than at the comfortable temperature, while extrasystole appeared in many cases in the cold encironment. Thermal factors were thus considered to greatly affect cardiac function in the patients.
Author 田中正敏
藤田良範
桑原敏樹
丸岡隆芳
荏原包臣
内島弘
長谷川武志
吉田敬一
内田宏子
新谷博一
Author_FL EBARA Kaneomi
MARUOKA Takayoshi
KUWABARA Toshiki
HASEGAWA Takeshi
UCHIDA Hiroko
NIITANI Hirokazu
YOSHIDA Keiichi
TANAKA Masatoshi
UCHIJIMA Hiromu
FUJITA Yoshinori
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  fullname: FUJITA Yoshinori
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  fullname: NIITANI Hirokazu
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  fullname: TANAKA Masatoshi
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昭和大学医学部第三内科
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DocumentTitleAlternate EFFECT OF HOT AND COLD ENVIRONMENTS ON EXERCISING PATIENTS WITH HISTORIES OF MYOCARDIAL INFARCTION
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Snippet 陳旧性心筋梗塞患者25例に定量的運動負荷試験を低温(15℃), 常温(25℃), 高温(35℃)環境内で実施し, 環境温が運動耐容量, 心機能におよぼす影響について比較検討した. 運動耐...
陳旧性心筋梗塞患者25例に定量的運動負荷試験を低温(15℃)・常温(25℃)・高温(35℃)環境内で実施し, 環境温が運動耐容量, 心機能におよぼす影響について比較検討した. 運動耐...
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SubjectTerms 心筋梗塞症
環境温度
Title 陳旧性心筋梗塞症の低温・高温環境における定量的運動負荷試験の検討
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