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Abstract Aims The ability to be physically active is pivotal to the quality of life in elderly patients. This study aims to describe the association between exercise capacity and health-related quality of life (HRQoL), anxiety, and depression following an exercise-based cardiac rehabilitation (CR) programme in elderly cardiac patients. Methods and results Patients aged ≥65 years with acute and chronic coronary syndrome or heart valve surgery were consecutively included from eight CR centres in seven European countries. Exercise capacity VO2peak(mL/kg/min) was assessed with a cardiopulmonary exercise test (97%) or a 6-min walk test. Outcome variables included HRQoL 36-item Short-Form Health Survey physical and mental component scores (PCS and MCS), anxiety (Generalized Anxiety Disorder-7), and depression (Patient Health Questionnaire-9). Mixed models were used to address the association between baseline and the development in VO2peak, and outcome variables stratified on sex, and adjusted for baseline values, age, and CR centre. A total of 1633 patients were included (T0), 1523 (93%) completed end-of-CR assessment (T1), and 1457 (89%) were available for 1-year follow-up (T2). Women had higher percentage of predicted VO2peak but poorer scores in HRQoL, anxiety, and depression at all time points. All scores improved in both sexes at follow-up. We found significant associations between VO2peak at baseline as well as development in VO2peak and all outcome variables at T1 and T2 in men (all P 0.001). In women, VO2peak was only associated with PCSs (P 0.001). Conclusion Improvements in exercise capacity were strongly associated with improvements in HRQoL and mental health, however, with stronger associations in men. The results highlight the importance of physical fitness for HRQol and mental health. The findings from this study might be useful to better target individual CR programmes.
Kjesbu et al. (Wed,) studied this question.