Validation of a novel, objective measure of occupational sitting

Ryde, Gemma C., Gilson, Nicolas D., Suppini, Alessandro and Brown, Wendy J. (2012) Validation of a novel, objective measure of occupational sitting. Journal of Occupational Health, 54 5: 383-386. doi:10.1539/joh.12-0091-BR

Author Ryde, Gemma C.
Gilson, Nicolas D.
Suppini, Alessandro
Brown, Wendy J.
Title Validation of a novel, objective measure of occupational sitting
Journal name Journal of Occupational Health   Check publisher's open access policy
ISSN 1341-9145
Publication date 2012-09
Sub-type Article (original research)
DOI 10.1539/joh.12-0091-BR
Open Access Status DOI
Volume 54
Issue 5
Start page 383
End page 386
Total pages 4
Place of publication Tokyo, Japan
Publisher Nihon Sangyo Eisei Gakkai
Collection year 2013
Language eng
Formatted abstract
Objective: To test the validity of a sitting pad (SP) to measure desk based sitting time and transitions, against camera derived direct observation; and to compare the data with those from inclinometers in the ActivPAL3 (AP) and ActiGraph GT3X+ (AG).
Methods: Australian employees (n=13; 9 women; mean age 30 ± 6.5 yr) were provided with a SP, AG and AP in 2011. A camera recorded chair based transitions during a prescribed and a free living protocol. Mean sitting time and transitions were calculated for each device and intra-class correlations (ICCs) and mean differences between (a) the SP and the camera and (b) the AP, AG and camera, were compared.
Results: During the prescribed protocol, the smallest mean differences compared with the camera were for the SP; sitting time 0.30 ± 0.21 min, transitions -0.46 ± 0.78. During free living, both the SP and AP (set to record events greater than 3 s) showed excellent levels of agreement with the camera for sitting time (0.999 and 0.990 respectively) and transitions (0.997 and 0.928 respectively). Agreement between the camera and the AG was poor for both sitting time and transitions (0.257 and 0.033 respectively).
Conclusions: The SP is a highly accurate measure of desk based sitting time and transitions and provides novel measurement and intervention opportunities for research into occupational sitting.
Keyword Workplace
Sedentary behaviour
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Human Movement and Nutrition Sciences Publications
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Created: Fri, 23 Nov 2012, 11:08:41 EST by Deborah Noon on behalf of School of Human Movement and Nutrition Sciences