| 刘 洵,林青华,李淑荣,姚 莉,谭思洁.冠心病患者运动中心率-收缩压双乘积与血乳酸浓度和ST段水平的关系[J].中国康复医学杂志,2013,28(8):735~738 |
| 冠心病患者运动中心率-收缩压双乘积与血乳酸浓度和ST段水平的关系 点此下载全文 |
| 刘 洵 林青华 李淑荣 姚 莉 谭思洁 |
| 天津体育学院健康与运动科学系, 天津市河西区卫津南路51号,300381 |
| 基金项目：天津市科学技术普及项目基金资助项目（2012-212） |
| DOI： |
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| 摘要
目的：使冠心病患者能够利用心率-收缩压双乘积（RPP）这一简便指标推测其乳酸无氧阈和心肌缺血阈，以便确定适宜的有氧运动强度。
方法：44例女性冠心病患者（66.0±6.0岁）在活动跑台上进行了递增负荷运动实验，其间连续监测心电图中ST段的变化，并每3min测定1次血乳酸浓度（BL）和RPP。然后建立用RPP推测BL和ST的公式。
结果：RPP推测BL的数学公式为，Y=2.6723－0.0071X＋0.00000027 X3(P<0.05)，其中Y为BL，X为RPP。乳酸阈强度约为 RPP 180 搏动次数·mmHg·100-1。RPP推测ST的数学公式为，Y=0.5652－0.00005 X2+0.000000072 X3(P<0.05)，其中Y为ST，X为RPP。缺血阈强度约为 RPP 210 搏动次数·mmHg·100-1。
结论：冠心病患者的康复运动不但要考虑到心肌的缺血、缺氧，而且骨骼肌在这方面的变化也不容忽视。利用RPP可对这些指标进行推测。 |
| 关键词：冠心病 运动心脏康复 心率-收缩压双乘积 乳酸无氧阈 心肌缺血阈 |
| Relationship between rate-pressure product and blood lactate concentration as well as ST segment level in coronary heart disease patients during exercise-based cardiac rehabilitation Download Fulltext |
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| Department of Health and Movement Science, Tianjin University of Sport, Tianjin, 300381 |
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| Abstract: |
| Abstract
Objective: By using rate-pressure product (RPP) to predict both blood lactate(BL) and ST segment(ST) ischemic threshold in coronary heart disease patients to determine the optimal aerobic exercise intensity easily.
Method: Forty-four coronary heart disease patients, aged (66.0±6.0) years, performed a graded exercise test on a treadmill, at the same time BL and RPP were recorded every three minutes, and ST in electrocardiogram was monitored continuously. Then, the formulae for predicting BL and ST from RPP were established.
Result: The formula for predicting BL from RPP was as following: Y=1.6723-0.0071X+0.00000027X3 (Y=BL, X=RPP, P<0.05). An exercise intensity corresponding to the lactate threshold was around RPP 180 beats·mmHg·100-1. The formula for predicting ST from RPP was as following: Y=0.5652-0.00005X2+0.000000072X3(Y=ST, X= RPP, P<0.05). An exercise intensity corresponding to the ischemic threshold was around RPP 210 beats·mmHg·100-1.
Conclusion: Not only myocardial ischemia but also skeletal muscle oxygen deficiency should be considered prudently, the while coronary heart disease patients exercising during rehabilitation. The RPP can be applied as an alternative option to predict changes of those variables. |
| Keywords:coronary heart disease exercise-based cardiac rehabilitation rate-pressure product lactate anaerobic threshold myocardial ischemic threshold |
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