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자료유형
학술저널
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저널정보
대한재활의학회 Annals of Rehabilitation Medicine Annals of Rehabilitation Medicine 제41권 제6호
발행연도
2017.1
수록면
1,039 - 1,046 (8page)

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Objective To determine whether heart rate recovery (HRR) following an exercise tolerance test (ETT) is correlated with a changing ratio of peak oxygen consumption (VO2) and maximal metabolic equivalents (METmax).Methods A total of 60 acute myocardial infarction (AMI) patients who underwent ETT at both assessment points – 3 weeks (T0) after the AMI attack and 3 months after T0 (T1) were included. After achieving a peak workload, the treadmill was stopped with a 5-minute cooldown period, and the patients recovered in a comfortable and relaxed seated position. HRR was defined as the difference between the maximal heart rate (HRmax) and the HR measured at specific time intervals – immediately after the cool down period (HRR-0) and 3 minutes after the completion of the ETT (HRR-3).Results HRR-0 and HRR-3 increased over time, whereas VO2max and METmax did not show significant changes. There was a positive correlation between HRR at T0 and the exercise capacity at T0. HRR at T0 also showed a positive correlation with the exercise capacity at T1. There was no significant correlation between HRR measured at T0 and the change in the ratio of VO2max and METmax, as calculated by subtracting VO2max and METmax obtained at T0 from those obtained at T1, divided by VO2max at T0 and multiplied by 100.Conclusion Post-exercise HRR measured at 3 weeks after the AMI onset can reflect the exercise capacity 3 months after the first ETT. However, it may be difficult to correlate post-exercise HRR at T0 with the degree of increase in cardiopulmonary exercise capacity in patients with AMI.

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