Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/36448
Title: Energy expenditure during common sitting and standing tasks: examining the 1.5 MET definition of sedentary behaviour
Authors: Mansoubi, M.
Pearson, N.
Clemes, S. A.
Biddle, S. J.
Bodicoat, D. H.
Tolfrey, K.
Edwardson, C. L.
Yates, Thomas Edward
First Published: 29-May-2015
Publisher: BioMed Central
Citation: BMC Public Health, 2015, 15 : 516
Abstract: BACKGROUND: Sedentary behavior is defined as any waking behavior characterized by an energy expenditure of 1.5 METS or less while in a sitting or reclining posture. This study examines this definition by assessing the energy cost (METs) of common sitting, standing and walking tasks. METHODS: Fifty one adults spent 10 min during each activity in a variety of sitting tasks (watching TV, Playing on the Wii, Playing on the PlayStation Portable (PSP) and typing) and non-sedentary tasks (standing still, walking at 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, and 1.6 mph). Activities were completed on the same day in a random order following an assessment of resting metabolic rate (RMR). A portable gas analyzer was used to measure oxygen uptake, and data were converted to units of energy expenditure (METs). RESULTS: Average of standardized MET values for screen-based sitting tasks were: 1.33 (SD: 0.24) METS (TV), 1.41 (SD: 0.28) (PSP), and 1.45 (SD: 0.32) (Typing). The more active, yet still seated, games on the Wii yielded an average of 2.06 (SD: 0.5) METS. Standing still yielded an average of 1.59 (SD: 0.37) METs. Walking MET values increased incrementally with speed from 2.17 to 2.99 (SD: 0.5 - 0.69) METs. CONCLUSIONS: The suggested 1.5 MET threshold for sedentary behaviors seems reasonable however some sitting based activities may be classified as non-sedentary. The effect of this on the definition of sedentary behavior and associations with metabolic health needs further investigation.
DOI Link: 10.1186/s12889-015-1851-x
eISSN: 1471-2458
Links: http://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-015-1851-x
http://hdl.handle.net/2381/36448
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2015 Mansoubi et al.; licensee BioMed Central. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
Appears in Collections:Published Articles, Dept. of Cardiovascular Sciences

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