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Accelerometer measured sedentary behavior and physical activity in white and black adults: The REGARDS study.

TitleAccelerometer measured sedentary behavior and physical activity in white and black adults: The REGARDS study.
Publication TypeJournal Article
Year of Publication2016
AuthorsHooker, SP, Hutto, B, Zhu, W, Blair, SN, Colabianchi, N, Vena, JE, Rhodes, D, Howard, VJ
JournalJ Sci Med Sport
Volume19
Issue4
Pagination336-41
Date Published2016 Apr
ISSN1878-1861
KeywordsAccelerometry, Adult, African Americans, Aged, Aged, 80 and over, Cross-Sectional Studies, European Continental Ancestry Group, Exercise, Female, Humans, Male, Middle Aged, Sedentary Lifestyle, Southeastern United States, Time Factors
Abstract

OBJECTIVES: Health disparities between subgroups may be partially due to differences in lifestyle behaviors such as sedentariness and physical activity. To obtain a more accurate description of these two lifestyle behaviors, accelerometry was employed among a large sample of white and black adults (ages 49-99 years) living in the United States.DESIGN: Cross-sectional.METHODS: 7967 participants from the REasons for Geographic and Racial Differences in Stroke cohort wore an Actical™ accelerometer ≥10h/day for ≥4 days. Time (mean minutes/day and proportion of total wear time) spent in sedentary behavior, light intensity physical activity, and moderate-vigorous intensity physical activity was compared by sex, age, body mass index, race, and geographic location.RESULTS: Proportion of total wear time spent in sedentary behavior was 75-90%, light intensity physical activity was 10-23%, and moderate-vigorous intensity physical activity was 0-1.7% across subgroups. Mean moderate-vigorous intensity physical activity was 0-16min/day and associated with 3-12% accumulating ≥150min/wk using a 10-min bout criterion. Persons ≥85 years, those classified obese, persons living in the southeastern United States, and black women were the most inactive. The proportion achieving at least one 10-min bout of moderate-vigorous intensity physical activity per week was only 36%. The number of 10-min bouts/week was 1.5±0.08bouts/week. The distribution of weekly moderate-vigorous intensity physical activity was similar across nearly all subgroups with a distinct reverse J-shaped configuration.CONCLUSIONS: The vast majority of white and black midlife and older adults in this study engaged sparingly in moderate-vigorous intensity physical activity, accumulated tremendous amounts of sedentary behavior, and seldom engaged in continuous bouts of health-enhancing physical activity.

DOI10.1016/j.jsams.2015.04.006
Alternate JournalJ Sci Med Sport
PubMed ID25937313
PubMed Central IDPMC4609218
Grant ListR01 NS061846 / NS / NINDS NIH HHS / United States
U01 NS041588 / NS / NINDS NIH HHS / United States
R01NS061846 / NS / NINDS NIH HHS / United States