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Capturing the pattern of physical activity and sedentary behavior: Exposure Variation Analysis of accelerometer data
Curtin University, Perth.
Curtin University, Perth.
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0003-1443-6211
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences. University of Gävle, Centre for Musculoskeletal Research.
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2014 (English)In: Journal of Physical Activity and Health, ISSN 1543-3080, E-ISSN 1543-5476, Vol. 11, no 3, 614-625 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Capturing the complex time pattern of physical activity (PA) and sedentary behavior (SB) using accelerometry remains a challenge. Research from occupational health suggests exposure variation analysis (EVA) could provide a meaningful tool. This paper (1) explains the application of EVA to accelerometer data, (2) demonstrates how EVA thresholds and derivatives could be chosen and used to examine adherence to PA and SB guidelines, and (3) explores the validity of EVA outputs.

METHODS: EVA outputs are compared with accelerometer data from 4 individuals (Study 1a and1b) and 3 occupational groups (Study 2): seated workstation office workers (n = 8), standing workstation office workers (n = 8), and teachers (n = 8).

RESULTS: Line graphs and related EVA graphs highlight the use of EVA derivatives for examining compliance with guidelines. EVA derivatives of occupational groups confirm no difference in bouts of activity but clear differences as expected in extended bouts of SB and brief bursts of activity, thus providing evidence of construct validity.

CONCLUSIONS: EVA offers a unique and comprehensive generic method that is able, for the first time, to capture the time pattern (both frequency and intensity) of PA and SB, which can be tailored for both occupational and public health research.

Place, publisher, year, edition, pages
2014. Vol. 11, no 3, 614-625 p.
Keyword [en]
Bout, break, sedentary behaviour, moderate/vigorous physical activity, exercise, diversity
National Category
Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:hig:diva-10918DOI: 10.1123/jpah.2012-0105ISI: 000334983700021PubMedID: 23416959Scopus ID: 2-s2.0-84898619028OAI: oai:DiVA.org:hig-10918DiVA: diva2:458505
Available from: 2011-11-23 Created: 2011-11-23 Last updated: 2015-06-04Bibliographically approved

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Citation style
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