Michael A. Babyak

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Defining hope as a cognitive set comprising agency (belief in one's capacity to initiate and sustain actions) and pathways (belief in one's capacity to generate routes) to reach goals, the Hope Scale was developed and validated previously as a dispositional self-report measure of hope (Snyder et al., 1991). The present 4 studies were designed to develop and(More)
OBJECTIVE The purpose of this study was to assess the status of 156 adult volunteers with major depressive disorder (MDD) 6 months after completion of a study in which they were randomly assigned to a 4-month course of aerobic exercise, sertraline therapy, or a combination of exercise and sertraline. METHODS The presence and severity of depression were(More)
BACKGROUND Previous observational and interventional studies have suggested that regular physical exercise may be associated with reduced symptoms of depression. However, the extent to which exercise training may reduce depressive symptoms in older patients with major depressive disorder (MDD) has not been systematically evaluated. OBJECTIVE To assess the(More)
BACKGROUND Studies that have shown clinical depression to be a risk factor for cardiac events after coronary artery bypass graft (CABG) surgery have had small sample sizes, short follow-up, and have not had adequate power to assess mortality. We sought to assess whether depression is associated with an increased risk of mortality. METHODS We assessed 817(More)
OBJECTIVE Statistical models, such as linear or logistic regression or survival analysis, are frequently used as a means to answer scientific questions in psychosomatic research. Many who use these techniques, however, apparently fail to appreciate fully the problem of overfitting, ie, capitalizing on the idiosyncrasies of the sample at hand. Overfitted(More)
OBJECTIVE The present paper reviews the evidence that depression is a risk factor for the development and progression of coronary artery disease (CAD). METHODS MEDLINE searches and reviews of bibliographies were used to identify relevant articles. Articles were clustered by theme: depression as a risk factor, biobehavioral mechanisms, and treatment(More)
OBJECTIVE To assess whether patients receiving aerobic exercise training performed either at home or in a supervised group setting achieve reductions in depression comparable to standard antidepressant medication (sertraline) and greater reductions in depression compared to placebo controls. METHODS Between October 2000 and November 2005, we performed a(More)
OBJECTIVE To assess the clinical significance of mental stress-induced myocardial ischemia in patients with coronary artery disease (CAD). DESIGN AND SETTING Cohort study in outpatients in a tertiary care teaching hospital assessed at baseline and followed up for up to 5 years. SUBJECTS A total of 126 volunteer patients (112 men, 14 women; mean age, 59(More)
OBJECTIVE The present paper reviews theories of social support and evidence for the role of social support in the development and progression of coronary heart disease (CHD). METHODS Articles for the primary review of social support as a risk factor were identified with MEDLINE (1966-2004) and PsychINFO (1872-2004). Reviews of bibliographies also were(More)
BACKGROUND Previous studies have demonstrated that myocardial ischemia can be elicited by mental stress in the laboratory and during daily life and that ischemia induced by mental stress is associated with an increased risk for future cardiac events in patients with coronary artery disease. OBJECTIVES To examine the extent to which ischemia induced by(More)