Format

Send to

Choose Destination
J Sci Med Sport. 2016 Apr;19(4):336-41. doi: 10.1016/j.jsams.2015.04.006. Epub 2015 Apr 17.

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

Author information

1
Exercise Science and Health Promotion Program, School of Nutrition and Health Promotion, Arizona State University, United States. Electronic address: steven.hooker@asu.edu.
2
Prevention Research Center, Arnold School of Public Health, University of South Carolina, United States. Electronic address: brent@brenthutto.com.
3
Exercise Science and Health Promotion Program, School of Nutrition and Health Promotion, Arizona State University, United States. Electronic address: wenfei.zhu@asu.edu.
4
Departments of Exercise Science and Epidemiology and Biostatistics, Arnold School of Public Health, United States. Electronic address: sblair@mailbox.sc.edu.
5
Institute for Social Research, University of Michigan, United States. Electronic address: colabianchi@umich.edu.
6
Department of Public Health Sciences, College of Medicine, Medical University of South Carolina, United States. Electronic address: vena@musc.edu.
7
Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, United States. Electronic address: drhodes@ms.soph.uab.edu.
8
Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, United States. Electronic address: vjhoward@uab.edu.

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.

KEYWORDS:

African American; Aging; Cohort; Exercise; Movement sensor; Patterns

PMID:
25937313
PMCID:
PMC4609218
DOI:
10.1016/j.jsams.2015.04.006
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center