title: Combined Effects of Sedentary Behavior and Moderate-to-Vigorous Physical Activity on Cardiovascular Health in Older, Community-Dwelling Latinos.
abstract: This study examined the combined effects of sedentary behavior and moderate-to-vigorous physical activity (MVPA) on cardiovascular health in older Latinos. In a cross-sectional sample of 147 older, community-dwelling Latinos, time spent in sedentary behavior and MVPA were obtained using accelerometers. Analyses examined the effects of a measure of physical activity that combined levels of sedentary behavior (± 10 daily hours) and MVPA (< 30, 30-150, or > 150 weekly minutes) on cardiovascular health outcomes (blood pressure, BMI, waist circumference, cardiorespiratory fitness). Results suggest that cardiovascular health benefits of MVPA on BMI (p = .005), waist circumference (p = .002), and cardiorespiratory fitness (p = .012) may depend on a participant's level of sedentary behavior. For all three, health benefits of 30-150 weekly minutes of MVPA were found only for those without excessive sedentary behavior (≥ 10 hr). Sedentary behavior may negatively impact cardiovascular health despite moderate participation in MVPA. Health guidelines should suggest reducing sedentary behavior while increasing MVPA.
authors.affiliation: Rush University College of Nursing, Chicago, IL.
authors.forename: Shannon
authors.initials: S
authors.lastname: Halloway
authors.forename: JoEllen
authors.initials: J
authors.lastname: Wilbur
authors.forename: Michael E
authors.initials: ME
authors.lastname: Schoeny
authors.forename: Pamela A
authors.initials: PA
authors.lastname: Semanik
authors.forename: David X
authors.initials: DX
authors.lastname: Marquez
mesh_terms: D061725:Accelerometry; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000502:physiology; D015992:Body Mass Index; D000072599:Cardiorespiratory Fitness / Q000502:physiology*; D002641:Chicago / Q000453:epidemiology; D003430:Cross-Sectional Studies; D015444:Exercise / Q000502:physiology*; D005260:Female; D015438:Health Behavior / Q000208:ethnology*; D006293:Health Promotion; D006306:Health Surveys; D006630:Hispanic or Latino; D006801:Humans; D057187:Independent Living; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D012307:Risk Factors; D057185:Sedentary Behavior; D014505:Urban Population; D055105:Waist Circumference