Methods: 52 coronary heart disease pateints (CHD), 84 normal persons as control and 18 false?positive persons underwent treadmill stress test with Bruce protocols. QTD and QTcd were measured before and after peak exercise stress test.

• 方法：按Bruce方案对52例冠心病、84例正常人和18例运动试验假阳性者进行平板运动心电图检查，测定运动前后QT离散度。