Types of heart rate-recovery loop were significantly correlated ( P < 0. 001) with number of diseased coronary arteries.

心率恢复环形态与冠状动脉病变支数相关性良好（P<0.001）。

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Objective: To evaluate the clinical value of heart rate recovery loop (HRRL) during treadmill exercise test in the detection of coronary artery disease (CAD).

目的：评价平板运动试验心率恢复环(HRRL)在冠心病(CAD)诊断中的价值。

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