Energy expenditure during common sitting and standing tasks: examining the 1.5 MET definition of sedentary behaviour
Article
Article Title | Energy expenditure during common sitting and standing tasks: examining the 1.5 MET definition of sedentary behaviour |
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ERA Journal ID | 13449 |
Article Category | Article |
Authors | Mansoubi, Maedeh (Author), Pearson, Natalie (Author), Clemes, Stacy A. (Author), Tolfrey, Keith (Author), Edwardson, Charlotte L. (Author), Yates, Thomas (Author), Biddle, Stuart J. H. (Author) and Bodicoat, Danielle H. (Author) |
Journal Title | BMC Public Health |
Journal Citation | 15, pp. 1-8 |
Number of Pages | 8 |
Year | 2015 |
Publisher | BioMed Central Ltd. |
Place of Publication | United Kingdom |
ISSN | 1471-2458 |
Digital Object Identifier (DOI) | https://doi.org/10.1186/s12889-015-1851-x |
Web Address (URL) | http://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-015-1851-x |
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. |
Keywords | energy expenditure; MET; physical activity; sedentary behaviour; adult; basal metabolism; cross-over studies; energy metabolism; female; health status; humans; male; middle aged; obesity; physical examination; play and playthings; recreation; reference standards; sedentary lifestyle; video games; young adult |
ANZSRC Field of Research 2020 | 420702. Exercise physiology |
Byline Affiliations | Loughborough University, United Kingdom |
University of Leicester, United Kingdom | |
Victoria University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q41x9/energy-expenditure-during-common-sitting-and-standing-tasks-examining-the-1-5-met-definition-of-sedentary-behaviour
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