The Effects of Unsupervised Exercise Training on Physical Activity and Physiological Factors after Supervised Cardiac Rehabilitation

DOI Web Site 被引用文献2件 参考文献52件
  • Izawa Kazuhiro P.
    Department of Rehabilitation Medicine, St. Marianna University School of Medicine Hospital
  • Watanabe Satoshi
    Department of Rehabilitation Medicine, St. Marianna University School of Medicine Hospital
  • Oka Koichiro
    Faculty of Sport Sciences, Waseda University
  • Kobayashi Toru
    Department of Rehabilitation Medicine, St. Marianna University School of Medicine Hospital
  • Osada Naohiko
    Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine
  • Omiya Kazuto
    Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine

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Exercise maintenance after supervised cardiac rehabilitation is important in maintaining both physical activity and physiological factors, such as peak VO2 and muscle strength (MS), associated with reduced mortality. However, there is no evidence of the effects of unsupervised exercise training and MS training on physical activity and physiological factors after supervised cardiac rehabilitation of Japanese cardiac patients. We conducted a randomized, controlled trial to evaluate the effect of unsupervised exercise training on physical activity and selected physiological factors after supervised cardiac rehabilitation. Eighteen myocardial infarction (MI) patients (16 men, 2 women; mean age 66.3 years) were recruited following completion of a supervised recovery-phase cardiac rehabilitation program. Patients were randomly assigned to a MS training (n=10) or control group (n=8). Baseline measurements of physical activity, peak VO2, and MS were performed at the end of supervised recovery-phase cardiac rehabilitation (6 months after the onset of MI: T1). Six months later, after going through an unsupervised exercise program (12 months after the onset of MI: T2) exercise maintenance, peak VO2, MS, and physical activity were remeasured. The MS training group performed low-intensity MS training and walking over the second 6-month period; the control group performed walking exercise only. All patients maintained their exercise training. At T2, there were no significant differences in peak VO2 values between the MS training and control groups. There was also no significant difference in physical activity (mean number of steps per week) between the MS training and control groups. However, MS was significantly higher in the MS training group than in the control group. We concluded that unsupervised exercise training and low-level MS training performed after supervised cardiac rehabilitation may effectively maintain not only physical activity and peak VO2 but increase MS.

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