Froelicher V F, Wolthuis R, Fischer J, Uhl G
Am J Cardiol. 1981 May;47(5):1161-7. doi: 10.1016/0002-9149(81)90229-0.
Forty healthy young men at low risk for coronary artery disease underwent progressive maximal treadmill testing. Four bipolar electrocardiographic leads including CM5, CC5, inferior-superior Y, anterior-posterior Z, and a standard V5 were recorded and later computer-processed. Measurements included amplitudes of the Q, R, S, J junction and T wave, R-T and Q-S intervals and S-T segment slope. These variables are presented as the 10th, 50th (median) and 90th percentiles throughout the testing procedure to define reference values for the electrocardiographic response to maximal treadmill testing. The medians are presented graphically so that the exercise-induced changes can be visualized. In addition, the percent change of R wave amplitude in V5 compared with the supine pretest value is displayed for each subject during and after testing.
四十名患冠状动脉疾病风险较低的健康年轻男性接受了递增式最大运动平板试验。记录了包括CM5、CC5、上下Y导联、前后Z导联以及标准V5导联在内的四个双极心电图导联，并随后进行计算机处理。测量内容包括Q波、R波、S波、J点和T波的振幅、R-T间期和Q-S间期以及S-T段斜率。在整个测试过程中，这些变量以第10、第50（中位数）和第90百分位数呈现，以确定最大运动平板试验心电图反应的参考值。中位数以图形方式呈现，以便直观显示运动诱发的变化。此外，在测试期间和测试后，为每位受试者显示V5导联中R波振幅相对于仰卧位测试前值的变化百分比。
