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

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• 作者：Steven P. Hooker^a ; ^{steven.hooker@asu.edu" class="auth_mail" title="E-mail the corresponding author} ; Brent Hutto^b ; ^{brent@brenthutto.com" class="auth_mail" title="E-mail the corresponding author} ; Wenfei Zhu^a ; ^{wenfei.zhu@asu.edu" class="auth_mail" title="E-mail the corresponding author} ; Steven N. Blair^c ; ^{sblair@mailbox.sc.edu" class="auth_mail" title="E-mail the corresponding author} ; Natalie Colabianchi^d ; ^{colabianchi@umich.edu" class="auth_mail" title="E-mail the corresponding author} ; John E. Vena^e ; ^{vena@musc.edu" class="auth_mail" title="E-mail the corresponding author} ; David Rhodes^f ; ^{drhodes@ms.soph.uab.edu" class="auth_mail" title="E-mail the corresponding author} ; Virginia J. Howard^g ; ^{vjhoward@uab.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：African American ; Aging ; Cohort ; Exercise ; Movement sensor ; Patterns
• 刊名：Journal of Science and Medicine in Sport
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：19
• 期：4
• 页码：336-341
• 全文大小：517 K

文摘

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 ≥10 h/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 0–16 min/day and associated with 3–12% accumulating ≥150 min/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 ± 0.08 bouts/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.