Utility and efficacy of a smartphone application to enhance the learning and behavior goals of traditional cardiac rehabilitation: a feasibility study.

Purpose: Most eligible patients do not participate in traditional clinic-based cardiac rehabilitation (CR) despite well-established benefits. Novel approaches to overcome logistic obstacles and increase efficiencies of learning, behavior modification, and exercise surveillance may increase CR participation. In an observational study, the feasibility and utility of a mobile smartphone application for CR, Heart Coach (HC), were assessed as part of standard care.

Physical activity and heart rate variability in older adults: the Cardiovascular Health Study.

Background: Cardiac mortality and electrophysiological dysfunction both increase with age. Heart rate variability (HRV) provides indices of autonomic function and electrophysiology that are associated with cardiac risk. How habitual physical activity among older adults prospectively relates to HRV, including nonlinear indices of erratic sinus patterns, is not established.

Trans-fatty acid consumption and heart rate variability in 2 separate cohorts of older and younger adults.

Background: Trans-fatty acid (TFA) consumption is associated with risk of coronary heart disease, and trans-18:2, but not trans-18:1, in red blood cell membranes has been associated with sudden cardiac arrest. Abnormal heart rate variability (HRV) reflects autonomic dysfunction and predicts cardiac death. Relationships between TFA consumption and HRV remain understudied.

Dose response between physical activity and risk of coronary heart disease: a meta-analysis.

Background: No reviews have quantified the specific amounts of physical activity required for lower risks of coronary heart disease when assessing the dose-response relation. Instead, previous reviews have used qualitative estimates such as low, moderate, and high physical activity.

Methods And Results: We performed an aggregate data meta-analysis of epidemiological studies investigating physical activity and primary prevention of CHD.

Physical activity and risk of stroke in women.

Background And Purpose: Physical activity has generally been inversely related to the risk of developing stroke, but details regarding the amount and kinds of activity required are unclear as are associations for specific stroke subtypes.

Methods: Eligible subjects were 39 315 healthy US women, > or =45 years of age, from the Women's Health Study. Women reported physical activity at baseline (1992 to 1995) and at 36, 72, 96, 125, and 149 months' follow-up.

Effects of physical activity on cardiovascular and noncardiovascular outcomes in older adults.

Aging is associated with a cascade of morphologic and physiologic changes that naturally predispose older adults to progressive weakening, functional decline, morbidity, disability, poor quality of life, and increased mortality. Physical activity moderates such insidious aging patterns and is a vital preventive and therapeutic strategy to optimize health throughout the aging process. Regular exercise provides many physiologic benefits, reduces risk of disease outcomes, and triggers important psychological gains.

Physical activity, adiposity, and risk of endometrial cancer.

Objective: We examined the associations of leisure-time physical activity and adiposity with endometrial cancer risk.

Methods: Eligible subjects were 32,642 healthy US women, >or=45 years, from the Women's Health Study. Women reported on questionnaires about their weight, height, and physical activity at baseline (1992-1995) and waist and hip circumference at 72 months.