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KMID : 1148720220100020001
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2022 Volume.10 No. 2 p.1 ~ p.6
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Effects of Different Cardiac Rehabilitation Protocols (RPE 11-13 and RHR+20) on Oxygen Uptake Efficiency and Respiratory Function Improvement in acute CABG Patients: A Randomized Controlled Trial
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Lee Jeong-Jae
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Abstract
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Purpose: The RPE 11-13 and RHR+20 methods are used to set exercise intensity for cardiac rehabilitation programs, which are usually performed during a 1-week hospital stay after coronary artery bypass grafting (CABG); however, studies quantifying the actual changes in cardiopulmonary function and inter-subject variability for each approach are limited.
Methods: In this study, 50 patients (43 males and 7 females) with a mean age of 63.6 ± 8.8 years who participated in an inpatient cardiac rehabilitation program after CABG were eligible for inclusion. Of the 50 patients, 16 dropped out (six patients refused to exercise and 10 patients were discharged midway), and finally, 34 patients participated in this study. Cardiopulmonary function and handgrip strength were evaluated, and after 1 week of cardiac rehabilitation, the evaluation parameters were reevaluated at the outpatient visit.
Results: Both the RHR+20 and RPE 11-13 groups showed a significant increase in the peak VO2 and a large effect size after cardiac rehabilitation (F[1,32]; p<.001; ηp2=.52), and overall, the RHR+20 group showed a higher peak VO2 t han the R PE 1 1-13 group (F[1,32]; p =.037; ηp2=.13). The RHR+20 group showed significantly greater improvements in the peak VO2 than the RPE 11-13 group and had a larger effect size (F[1,32]; p=.001; ηp2=.30).
Conclusion: Studies applying different exercise protocols to patients with acute CABG are insufficient. However, in this study, the RHR+20 exercise protocol has been shown to be stable and effective for cardiac rehabilitation in patients after CABG.
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KEYWORD
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Cardiac Rehabilitation Exercise Protocol, Coronary Artery Bypass Graft, Resting Heart Rate+20, RPE 11-13
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