Estimating energy expenditure with the RT3 triaxial accelerometer

Maddison, Ralph, Jiang, Yannan, Hoorn, Stephen Vander, Mhurchu, Cliona Ni, Lawes, Carlene M.M., Rodgers, Anthony and Rush, Elaine 2009, Estimating energy expenditure with the RT3 triaxial accelerometer, Research quarterly for exercise and sport, vol. 80, no. 2, pp. 249-256, doi: 10.1080/02701367.2009.10599559.

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Title Estimating energy expenditure with the RT3 triaxial accelerometer
Author(s) Maddison, RalphORCID iD for Maddison, Ralph
Jiang, Yannan
Hoorn, Stephen Vander
Mhurchu, Cliona Ni
Lawes, Carlene M.M.
Rodgers, Anthony
Rush, Elaine
Journal name Research quarterly for exercise and sport
Volume number 80
Issue number 2
Start page 249
End page 256
Total pages 8
Publisher Taylor & Frances
Place of publication New York, N.Y.
Publication date 2009-06
ISSN 0270-1367
Keyword(s) physical activity
activity counts
motion sensor
body composition
Summary The RT3 is a relatively new triaxial accelerometer that has replaced the TniTrac. The aim of this study was to validate the RT3 against doubly labeled water (DLW) in a free-living, mixed weight sample of adults. Total energy expenditure (TEE) was measured over a 15-day period using DLW Activity-related energy expenditure (AEE) was estimated by subtracting resting energy expenditure and thermic effect of feeding from TEE. The RT3 triaxial accelerometer was worn over 14 consecutive days. TEE and AEE were estimated using the RT3 proprietary equation. Thirty-six adults ages 18-56 years (56% women) with an average weight of 75.9 kg (SD = 14.8) completed all measurements. Compared to DLW the RT3 underestimated TEE by 539 kJ (4%) and AEE by 485 kJ (15%) on average. The RT3 provided a relatively accurate assessment of free-living activity-related energy expenditure at the group level and generally underestimated total and activity-related energy expenditure compared to DLW
Language eng
DOI 10.1080/02701367.2009.10599559
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
1106 Human Movement And Sports Science
1701 Psychology
1302 Curriculum And Pedagogy
Socio Economic Objective 920499 Public Health (excl. Specific Population Health) not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2009, American Alliance for Health
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Document type: Journal Article
Collections: Faculty of Health
School of Exercise and Nutrition Sciences
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