Lassvik C
Scand J Clin Lab Invest. 1978 Dec;38(8):747-51. doi: 10.1080/00365517809104882.
The reproducibility of serial upright exercises in patients with ischaemic heart disease was tested. Five short term exercises (4--8 min) with continuous load increase and with 30 min rest intervals between tests were used. No tendency to change was found concerning work time to appearance of angina (APT), maximal working time (MWT) or time for disappearance of angina after exercise (DPT). The coefficient of variation was low for APT and MWT but considerably higher for DPT, being 9, 5 and 27%, respectively. MWT was considered as the end-point of choice. The ST depression at MWT showed no tendency to change and the variation was moderate (14%), while at APT and DPT the variation was high (52%), but, likewise, with no tendency to change. The maximal heart rate increased slightly and significantly (P less than 0.001), while the maximal blood pressure was constant throughout tests, thus the maximal rate pressure product tended to increase. This indicates a slight improvement of the myocardial performance at serial exercises, which, however, does not affect the reproducibility of the anginal reaction.
对缺血性心脏病患者进行连续直立运动的可重复性进行了测试。采用了五项短期运动（4 - 8分钟），运动中负荷持续增加，且每次测试之间有30分钟的休息间隔。在出现心绞痛的工作时间（APT）、最大工作时间（MWT）或运动后心绞痛消失时间（DPT）方面未发现变化趋势。APT和MWT的变异系数较低，但DPT的变异系数相当高，分别为9%、5%和27%。MWT被视为首选的终点指标。MWT时的ST段压低无变化趋势，变异程度适中（14%），而在APT和DPT时变异程度较高（52%），但同样无变化趋势。最大心率轻微且显著增加（P < 0.001），而在整个测试过程中最大血压保持恒定，因此最大心率血压乘积有增加趋势。这表明连续运动时心肌性能有轻微改善，然而，这并不影响心绞痛反应的可重复性。
