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- Publisher Website: 10.1007/s00421-015-3238-1
- Scopus: eid_2-s2.0-84952984949
- PMID: 26271677
- WOS: WOS:000367610200004
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Article: Kids are not little adults: what MET threshold captures sedentary behavior in children?
Title | Kids are not little adults: what MET threshold captures sedentary behavior in children? |
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Authors | |
Keywords | Public health Resting energy expenditure Measurement Youth |
Issue Date | 2016 |
Citation | European Journal of Applied Physiology, 2016, v. 116, n. 1, p. 29-38 How to Cite? |
Abstract | © 2015, Springer-Verlag Berlin Heidelberg. Purpose: The study compares MET-defined cutpoints used to classify sedentary behaviors in children using a simulated free-living design. Methods: A sample of 102 children (54 boys and 48 girls; 7–13 years) completed a set of 12 activities (randomly selected from a pool of 24 activities) in a random order. Activities were predetermined and ranged from sedentary to vigorous intensities. Participant’s energy expenditure was measured using a portable indirect calorimetry system, Oxycon mobile. Measured minute-by-minute VO2values (i.e., ml/kg/min) were converted to an adult- or child-MET value using the standard 3.5 ml/kg/min or the estimated child resting metabolic rate, respectively. Classification agreement was examined for both the “standard” (1.5 adult-METs) and an “adjusted” (2.0 adult-METs) MET-derived threshold for classifying sedentary behavior. Alternatively, we also tested the classification accuracy of a 1.5 child-MET threshold. Classification accuracy of sedentary activities was evaluated relative to the predetermined intensity categorization using receiver operator characteristic curves. Results: There were clear improvements in the classification accuracy for sedentary activities when a threshold of 2.0 adult-METs was used instead of 1.5 METs (Se1.5 METs = 4.7 %, Sp1.5 METs = 100.0 %; Se2.0 METs = 36.9 %, Sp2.0 METs = 100.0 %). The use of child-METs while maintaining the 1.5 threshold also resulted in improvements in classification (Se = 45.1 %, Sp = 100.0 %). Conclusion: Adult-MET thresholds are not appropriate for children when classifying sedentary activities. Classification accuracy for identifying sedentary activities was improved when either an adult-MET of 2.0 or a child-MET of 1.5 was used. |
Persistent Identifier | http://hdl.handle.net/10722/267021 |
ISSN | 2023 Impact Factor: 2.8 2023 SCImago Journal Rankings: 1.016 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Saint-Maurice, Pedro F. | - |
dc.contributor.author | Kim, Youngwon | - |
dc.contributor.author | Welk, Gregory J. | - |
dc.contributor.author | Gaesser, Glenn A. | - |
dc.date.accessioned | 2019-01-31T07:20:17Z | - |
dc.date.available | 2019-01-31T07:20:17Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | European Journal of Applied Physiology, 2016, v. 116, n. 1, p. 29-38 | - |
dc.identifier.issn | 1439-6319 | - |
dc.identifier.uri | http://hdl.handle.net/10722/267021 | - |
dc.description.abstract | © 2015, Springer-Verlag Berlin Heidelberg. Purpose: The study compares MET-defined cutpoints used to classify sedentary behaviors in children using a simulated free-living design. Methods: A sample of 102 children (54 boys and 48 girls; 7–13 years) completed a set of 12 activities (randomly selected from a pool of 24 activities) in a random order. Activities were predetermined and ranged from sedentary to vigorous intensities. Participant’s energy expenditure was measured using a portable indirect calorimetry system, Oxycon mobile. Measured minute-by-minute VO2values (i.e., ml/kg/min) were converted to an adult- or child-MET value using the standard 3.5 ml/kg/min or the estimated child resting metabolic rate, respectively. Classification agreement was examined for both the “standard” (1.5 adult-METs) and an “adjusted” (2.0 adult-METs) MET-derived threshold for classifying sedentary behavior. Alternatively, we also tested the classification accuracy of a 1.5 child-MET threshold. Classification accuracy of sedentary activities was evaluated relative to the predetermined intensity categorization using receiver operator characteristic curves. Results: There were clear improvements in the classification accuracy for sedentary activities when a threshold of 2.0 adult-METs was used instead of 1.5 METs (Se1.5 METs = 4.7 %, Sp1.5 METs = 100.0 %; Se2.0 METs = 36.9 %, Sp2.0 METs = 100.0 %). The use of child-METs while maintaining the 1.5 threshold also resulted in improvements in classification (Se = 45.1 %, Sp = 100.0 %). Conclusion: Adult-MET thresholds are not appropriate for children when classifying sedentary activities. Classification accuracy for identifying sedentary activities was improved when either an adult-MET of 2.0 or a child-MET of 1.5 was used. | - |
dc.language | eng | - |
dc.relation.ispartof | European Journal of Applied Physiology | - |
dc.subject | Public health | - |
dc.subject | Resting energy expenditure | - |
dc.subject | Measurement | - |
dc.subject | Youth | - |
dc.title | Kids are not little adults: what MET threshold captures sedentary behavior in children? | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1007/s00421-015-3238-1 | - |
dc.identifier.pmid | 26271677 | - |
dc.identifier.scopus | eid_2-s2.0-84952984949 | - |
dc.identifier.volume | 116 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 29 | - |
dc.identifier.epage | 38 | - |
dc.identifier.isi | WOS:000367610200004 | - |
dc.identifier.issnl | 1439-6319 | - |