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Objectively measured time spent sedentary is associated with insulin resistance independent of overall and central body fat in 9-to 10-year-old portuguese children

2007Journal article Open access
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dc.contributor.authorSardinha, L. B.
dc.contributor.authorAndersen, L. B.
dc.contributor.authorAnderssen, S. A.
dc.contributor.authorQuiterio, A. L.
dc.contributor.authorOrnelas, Rui
dc.contributor.authorFroberg, K.
dc.contributor.authorRiddoch, C. J.
dc.contributor.authorEkelund, U.
dc.date.accessioned2021-11-24T13:39:34Z
dc.date.available2021-11-24T13:39:34Z
dc.date.issued2007
dc.description.abstractOBJECTIVE — We examined the independent relationships between objectively measured physical activity and insulin resistance in Portuguese children. RESEARCH DESIGN AND METHODS — This is a school-based, cross-sectional study in 147 randomly selected girls (aged 9.8 0.3 years; 27.8 9.3% body fat) and 161 boys (aged 9.8 0.3 years; 22.0 9.2% body fat). Physical activity was assessed by the Actigraph accel erometer for 4 days and summarized as time spent sedentary (accelerometer counts 500/min), in light-intensity (accelerometer counts 500–2,000/min), and in moderate- and vigorous intensity activity (accelerometer counts 2,001/min). We measured total and central fat mass by dual-energy X-ray absorptiometry. Insulin resistance was expressed as the homeostasis model assessment score. RESULTS — Time (min/day) spent sedentary was significantly and positively associated with insulin resistance ( -coefficient 0.001 [95% CI 0.0002–0.002]; P 0.013). Time spent in moderate- and vigorous-intensity physical activity ( 0.002 [ 0.003 to 0.001]; P 0.0009) and overall physical activity ( 0.001 [ 0.008 to 0.003]; P 0.0001) were significantly and inversely associated with insulin resistance. All associations remained statistically significant, although they were attenuated after further adjustments for sex, birth weight, sexual maturity, and total or central fat mass (P 0.03). CONCLUSIONS — Physical activity is associated with insulin resistance independent of total and central fat mass in children. Our results emphasize the importance of decreasing sedentary behavior and increasing time spent in moderate- and vigorous-intensity activity in children, which may have beneficial effects on metabolic risk factors regardless of the degree of adiposity.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSardinha, L. B., Andersen, L. B., Anderssen, S. A., Quitério, A. L., Ornelas, R., Froberg, K., ... & Ekelund, U. (2008). Objectively measured time spent sedentary is associated with insulin resistance independent of overall and central body fat in 9-to 10-year-old portuguese children. Diabetes care, 31(3), 569-575. https://doi.org/10.2337/dc07-1286pt_PT
dc.identifier.doi10.2337/dc07-1286pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3849
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Diabetes Associationpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectInsulin resistancept_PT
dc.subjectPhysical activitypt_PT
dc.subjectSedentarypt_PT
dc.subjectCentral body fatpt_PT
dc.subjectPortuguese childrenpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Sociaispt_PT
dc.titleObjectively measured time spent sedentary is associated with insulin resistance independent of overall and central body fat in 9-to 10-year-old portuguese childrenpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage575pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage569pt_PT
oaire.citation.titleDiabetes Carept_PT
oaire.citation.volume31pt_PT
person.familyNameSardinha
person.familyNameOrnelas
person.givenNameLuis
person.givenNameRui
person.identifier.ciencia-idA812-2D8E-1BC9
person.identifier.ciencia-idA71A-D19E-55F4
person.identifier.orcid0000-0002-6230-6027
person.identifier.orcid0000-0003-3737-7402
person.identifier.scopus-author-id6603814844
person.identifier.scopus-author-id24335790700
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationbd52240f-9a52-464f-82c4-b5d1d35bb133
relation.isAuthorOfPublication05370ce4-254d-4ca7-a937-9036407655c2
relation.isAuthorOfPublication.latestForDiscoverybd52240f-9a52-464f-82c4-b5d1d35bb133

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