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People may be more likely to exercise if they have self-efficacy for exercise (SEE). We conducted an exploratory analysis of SEE using data from a clinical trial designed to increase physical activity (N = 340). We evaluated correlates of baseline SEE and the relationship between baseline SEE and physical activity. Low SEE at baseline was correlated with lower well-being, physical activity, and higher depression at baseline. Participants with high (vs. low) baseline SEE had higher physical activity (but no differential change in activity) over time. These data highlight the potential role of SEE in psychological health and physical activity.

Prior work demonstrates a relationship between suicidal behavior and mood disorders, as well as between suicidal behavior and cardiovascular risk. When cardiovascular risk and mood disorders co-occur, people with these comorbid conditions tend to experience worse outcomes than people with only one of these conditions. As such, given the relevance of suicidal thoughts and behaviors among those with cardiovascular risk and mood disorders, suicidal thoughts and behaviors may be of particular concern in the comorbid population. However, the factors that differentiate those with or without suicidal thoughts or behaviors are unknown. Self-reported well-being is one factor that is shown to hold a relationship with suicidal risk, and may be relevant in the comorbid population. Thus, we evaluated whether different levels of well-being relate to suicidal thoughts and behaviors among individuals (N ​= ​340) with lifetime mood disorders and cardiovascular risk who participated in a 16-week online exercise study. Participants completed self-report assessments of lifetime (per the MINI International Neuropsychiatric Interview) and current (per the Patient Health Questionnaire-9) suicidal thoughts and behaviors, as well as a self-report assessment of well-being (per the WHO-5 Well-Being Index). We found that individuals with lifetime and current suicidal thinking had lower total WHO-5 scores over the study period. These data suggest that, among those with a history of depression and who have or are at-risk for cardiovascular disease, the risk of current or lifetime suicidal thoughts and behaviors may be increased for those who experience decreased well-being.