Age-related differences in physiologic and psychosocial outcomes after cardiac rehabilitation

Kazuhiro P. Izawa, Satoshi Watanabe, Koichiro Oka, Koji Hiraki, Yuji Morio, Yusuke Kasahara, Naohiko Osada, Kazuto Omiya, Setsu Iijima

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Objective: To examine differences in physiologic and psychosocial outcomes between age groups after an exercise-based supervised-recovery phase II cardiac rehabilitation outpatient program. Design: This is a longitudinal observational study. The study assessed 442 consecutive cardiac patients. Patients were divided into the middle-aged group (<65 yrs, n = 242) and older-age group (≥65 yrs, n = 200). Peak oxygen uptake, handgrip and knee extensor muscle strength, upper- and lower-body self-efficacy for physical activity, and physical component summary and mental component summary scores as assessed by SF-36 were measured at 1 and 3 mos after the onset of acute myocardial infarction or cardiac surgery and were compared. Results: All physiologic and psychosocial outcomes increased significantly between months 1 and 3 in both groups. However, increases were greater in the middle-aged vs. older-aged group in peak oxygen uptake (+13.1% vs. +8.7%, P < 0.01), knee extensor muscle strength (+17.6% vs. +13.3%, P = 0.01), lower-body self-efficacy for physical activity (+17.3% vs. +12.7%, P = 0.02), and physical component summary score (+5.4% vs. +2.7%, P = 0.02). Conclusions: Age-related differences in various physiologic and psychosocial measures indicated greater improvement from an exercise-based supervised recovery-phase II cardiac rehabilitation outpatient program in middle-aged vs. older-aged patients. Older adults may derive equal mental or emotional benefit from such a cardiac rehabilitation program but do not experience as much improvement in physiologic outcomes as middle-aged adults.

Original languageEnglish
Pages (from-to)24-33
Number of pages10
JournalAmerican Journal of Physical Medicine and Rehabilitation
Issue number1
Publication statusPublished - 2010 Jan


  • Age-Related Difference
  • Cardiac Rehabilitation
  • Physiologic Outcomes
  • Psychosocial Outcomes

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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