Fletcher G F, Cantwell J D, Watt E W
Circulation. 1979 Jul;60(1):140-4. doi: 10.1161/01.cir.60.1.140.
We investigated oxygen consumption (ml/kg/min) and hemodynamic response (peak heart rate-systolic blood pressure product) to individual exercise activities before and after exercise training in 22 male postmyocardial infarction patients (PMIP). Activities included swimming, walk/jogging, volleyball, calisthenics and exercise dance routines. Oxygen consumption was determined immediately after exercise by the Douglas bag gas collection procedure and, in selected patients, by a Max Planck respirometer during exercise. Hemodynamic data were obtained by pulse count and cuff sphygmomanometer. The increase in oxygen consumption and the decrease in rate-pressure product after each activity were significant (p less than or equal to 0.01). There were no differences in oxygen consumption between the Max Planck respirometer technique and collection (Douglas bag method) immediately after exercise. The oxygen consumption obtained for PMIP compared with available cumulative data on normal subjects is significantly variable, suggesting the need for caution when prescribing exercise for the PMIP based on energy costs of standard exercise measurements in normals. This was particularly relevant because of the significantly high oxygen consumption incurred during swimming.
我们研究了22名男性心肌梗死后患者（PMIP）在运动训练前后，针对各项运动活动的耗氧量（毫升/千克/分钟）和血流动力学反应（心率-收缩压峰值乘积）。运动活动包括游泳、步行/慢跑、排球、健身操和韵律操。运动结束后，立即通过道格拉斯袋气体收集法测定耗氧量，部分患者在运动过程中使用马克斯·普朗克呼吸计测定。血流动力学数据通过脉搏计数和袖带血压计获取。每项运动活动后耗氧量的增加以及心率-血压乘积的降低均具有显著性（p≤0.01）。运动结束后，马克斯·普朗克呼吸计技术与气体收集法（道格拉斯袋法）测得的耗氧量无差异。与正常受试者的现有累积数据相比，PMIP的耗氧量显著不同，这表明在根据正常人标准运动测量的能量消耗为PMIP制定运动处方时需谨慎。这一点尤为重要，因为游泳过程中会产生显著较高的耗氧量。
