ActiGraph GT3X determined variations in “free-living” standing, lying, and sitting duration among sedentary adults

Barwais, Faisal A., Cuddihy, Thomas F., Rachele, Jerome N., & Washington, Tracy L. (2013) ActiGraph GT3X determined variations in “free-living” standing, lying, and sitting duration among sedentary adults. Journal of Sport and Health Science, 2(4), pp. 249-256.

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Abstract

Background

Overweight and obesity has become a serious public health problem in many parts of the world. Studies suggest that making small changes in daily activity levels such as “breaking-up” sedentary time (i.e., standing) may help mitigate the health risks of sedentary behavior. The aim of the present study was to examine time spent in standing (determined by count threshold), lying, and sitting postures (determined by inclinometer function) via the ActiGraph GT3X among sedentary adults with differing weight status based on body mass index (BMI) categories.

Methods

Participants included 22 sedentary adults (14 men, 8 women; mean age 26.5 ± 4.1 years). All subjects completed the self-report International Physical Activity Questionnaire to determine time spent sitting over the previous 7 days. Participants were included if they spent seven or more hours sitting per day. Postures were determined with the ActiGraph GT3X inclinometer function. Participants were instructed to wear the accelerometer for 7 consecutive days (24 h a day). BMI was categorized as: 18.5 to <25 kg/m2 as normal, 25 to <30 kg/m2 as overweight, and ≥30 kg/m2 as obese.

Results

Participants in the normal weight (n = 10) and overweight (n = 6) groups spent significantly more time standing (after adjustment for moderate-to-vigorous intensity physical activity and wear-time) (6.7 h and 7.3 h respectively) and less time sitting (7.1 h and 6.9 h respectively) than those in obese (n = 6) categories (5.5 h and 8.0 h respectively) after adjustment for wear-time (p < 0.001). There were no significant differences in standing and sitting time between normal weight and overweight groups (p = 0.051 and p = 0.670 respectively). Differences were not significant among groups for lying time (p = 0.55).

Conclusion

This study described postural allocations standing, lying, and sitting among normal weight, overweight, and obese sedentary adults. The results provide additional evidence for the use of increasing standing time in obesity prevention strategies.

Impact and interest:

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ID Code: 58994
Item Type: Journal Article
Refereed: Yes
Additional Information: Title appeared in attached document is slightly different from the publication title.
Keywords: Sedentary behaviour, Anatomical position, Inclinometer function, Overwieght, Obesity
DOI: 10.1016/j.jshs.2013.06.003
ISSN: 2095-2546
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PUBLIC HEALTH AND HEALTH SERVICES (111700)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Exercise & Nutrition Sciences
Copyright Owner: Copyright 2013 Elsevier
Copyright Statement: This is the author’s version of a work that was accepted for publication in Journal of Sport and Health Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Sport and Health Science, [VOL 2, ISSUE 4, (2013)] DOI: http://dx.doi.org/10.1016/j.jshs.2013.06.003
Deposited On: 30 Apr 2014 02:04
Last Modified: 03 May 2014 16:22

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