Exercise self-efficacy and symptoms of depression after cardiac rehabilitation: predicting changes over time using a piecewise growth curve analysis.

BACKGROUND: Cardiac rehabilitation is often recommended after experiencing a cardiac event and has been shown to significantly improve health outcomes among patients. Several psychosocial variables have been linked with cardiac rehabilitation program success, including exercise self-efficacy. However, little is known about temporal patterns in patients' exercise self-efficacy after program completion. OBJECTIVE: This study examined changes in exercise self-efficacy among 133 cardiac rehabilitation patients and whether symptoms of depression impacted the rate of change in exercise self-efficacy. METHOD: Participants completed questionnaires at the beginning and end of cardiac rehabilitation and at 6-month intervals for 2 years. RESULTS: Growth curve analyses showed that exercise self-efficacy levels were highest at the beginning of cardiac rehabilitation, significantly declined 6 months after cardiac rehabilitation, and leveled off over the next 18 months. Results also showed that baseline depressive symptoms interacted with time: Compared with participants with fewer symptoms, participants high in depressive symptoms began cardiac rehabilitation with lower levels of exercise self-efficacy and evidenced significant declines 6 months after cardiac rehabilitation. At no time were they equal to their counterparts in exercise self-efficacy, and their means were lower 2 years after cardiac rehabilitation than before cardiac rehabilitation. CONCLUSIONS: Our findings imply that patients show unrealistic optimism surrounding the ease of initiating and maintaining an exercise program and that integrating efficacy-building activities into cardiac rehabilitation, especially for patients who show signs of distress, is advisable.

Perceived discrimination and health-related quality of life: testing the Reserve Capacity Model in Hispanic Americans.

This study tested aspects of the Reserve Capacity Model (Gallo & Matthews, 2003; Gallo, Penedo Espinosa de los Monteros, & Arguelles, 2009) as a means of understanding disparities in health-related quality of life appraisals among Hispanic Americans. Questionnaire data were collected from 236 Hispanic participants, including measures of perceived discrimination, optimism, social support, symptoms of trait anxiety, and physical and mental health-related quality of life. Path analysis indicated direct, negative associations between perceived discrimination and both forms of health-related quality of life. Results also showed that these relationships were partially mediated by the reserve capacity variable of optimism and by symptoms of anxiety, though evidence for mediation by anxiety was stronger than for optimism. Findings suggest that perceived discrimination depletes intrapersonal reserves in Hispanic Americans, which, in turn, induces negative emotions. Implications for community-level interventions are discussed.

Stability in Cardiac Attributions Before and After Cardiac Rehabilitation.

PURPOSE: This study examined temporal patterns in causal attributions generated by patients with cardiovascular disease before and after cardiac rehabilitation (CR). DESIGN: Qualitative, descriptive survey. METHODS: Eighty-six participants were asked what they believed was the primary cause of their cardiac events. Cardiac attributions were collected at the beginning of CR, at the end of CR, and 15 months after baseline. FINDINGS: Content analyses showed that heredity and behavior were the most commonly generated causes. Most participants showed stability in attributions over time, although we found a trend for more participants endorsing behavioral attributions at the end of the study. CONCLUSIONS: Cardiac attributions remain relatively stable across time. CLINICAL RELEVANCE: Cardiac rehabilitation staff should approach patients differently, depending on their causal narratives. Some patients enter CR understanding that behavior played a causal role, whereas some do not. Encouraging appreciation of the importance of behavior in cardiovascular disease onset and recurrence is vital.

Causal attributions following a cardiac event: Short- and long-term differences in health appraisals and outcomes.

This study examined attributions generated by cardiac rehabilitation patients shortly after experiencing a cardiovascular event, exploring whether attribution type was associated with health appraisals and outcomes concurrently and 21 months later. Attributions fell into three categories: controllable behavioral ones, uncontrollable biological ones, and stress-related causes. Linking attribution type to appraisals and outcomes showed that creating a behavioral attribution was beneficial in the short-term for control appraisals, but was associated with increased anxiety symptoms 21 months later. Thus, cardiac rehabilitation providers should encourage patients to maintain a future-focus that promotes perceived control over health promotion behaviors that reduce risk for recurrence.

Comparison of factor structure models for the Beck Anxiety Inventory among cardiac rehabilitation patients.

OBJECTIVE: Individuals with cardiovascular disease (CVD) experience greater rates of distress symptoms, such as anxiety and depressive symptoms, than the general population. These psychological outcomes have been linked to greater risk for negative outcomes following a cardiac event; however, research examining the relationship between specific components of anxiety and outcomes in CVD is limited. Further, prior research has not investigated the structure of anxiety symptoms in CVD. This study sought to compare previously established one, two, and four-factor models of the Beck Anxiety Inventory (BAI) in individuals enrolled in cardiac rehabilitation (CR). METHODS: Our sample included 208 individuals with CVD recruited during enrollment in a phase II CR program. Participants completed the BAI at enrollment in CR (Time 1) and again 12weeks later at CR completion (Time 2, n=151). RESULTS: Consistent with prior literature, 41% of our sample reported at least mild symptoms of anxiety (BAI>8), and the BAI proved to be a reliable measure within this sample (α=0.89). Confirmatory factor analysis (CFA) results indicated that a second-order model with four first order factors, consisting of cognitive, autonomic, neuromotor, and panic components, fit our data well. A multi-group CFA approach supported measurement invariance across time. CONCLUSION: These results suggest that anxiety following CVD can be evaluated based on cognitive, autonomic, neuromotor, and panic components as well as the encompassing anxiety construct.

Self-blame attributions, control appraisals and distress among cardiac rehabilitation patients.

This study examined associations between self-blame attributions, control appraisals and distress among cardiovascular disease patients participating in a cardiac rehabilitation (CR) programme. Questionnaire data were collected from 129 patients at the beginning and end of CR. We found little evidence that characterological self-blame (CSB) affects distress symptoms, but behavioural self-blame at the beginning of CR was positively associated with distress symptoms concurrently, and 12 weeks later. Furthermore, diet- and exercise-focused self-blame was only modestly, positively related to control appraisals concurrently, while CSB was negatively associated with control. Prospectively, we found few significant associations between self-blame and control. Results imply that making any type of self-blame attribution during CR does not aid in adjustment or enhanced control appraisals. Our findings suggest that CR staff should encourage patients to recognise their control over reducing risk for recurrence, but should discourage patients from looking backward and ruminating about factors that may have contributed to disease onset.