Change in Physical Activity and Sitting Time After Myocardial Infarction and Mortality Among Postmenopausal Women in the Women's Health Initiative-Observational Study [Epidemiology]

BackgroundHow physical activity (PA) and sitting time may change after first myocardial infarction (MI) and the association with mortality in postmenopausal women is unknown.Methods and ResultsParticipants included postmenopausal women in the Women's Health Initiative‐Observational Study, aged 50 to 79 years who experienced a clinical MI during the study. This analysis included 856 women who had adequate data on PA exposure and 533 women for sitting time exposures. Sitting time was self‐reported at baseline, year 3, and year 6. Self‐reported PA was reported at baseline through year 8. Change in PA and sitting time were calculated as the difference between the cumulative average immediately following MI and the cumulative average immediately preceding MI. The 4 categories of change were: maintained low, decreased, increased, and maintained high. The cut points were ≥7.5 metabolic equivalent of task hours/week versus

Source: JAHA:Journal of the American Heart Association - May 15, 2017 Category: Cardiology Authors: Gorczyca, A. M., Eaton, C. B., LaMonte, M. J., Manson, J. E., Johnston, J. D., Bidulescu, A., Waring, M. E., Manini, T., Martin, L. W., Stefanick, M. L., He, K., Chomistek, A. K. Tags: Aging, Cardiovascular Disease, Epidemiology, Exercise, Women Original Research Source Type: research