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dc.contributor.authorBorch, Kristin Ben
dc.contributor.authorEkelund, Ulfen
dc.contributor.authorBrage, Sorenen
dc.contributor.authorLund, Eiliven
dc.date.accessioned2012-02-29T16:14:45Z
dc.date.available2012-02-29T16:14:45Z
dc.date.issued2012-01-19en
dc.identifier.issn1479-5868
dc.identifier.urihttp://www.dspace.cam.ac.uk/handle/1810/241686
dc.description.abstractAbstract Background Accurate measurement of physical activity (PA) is critical to establish dose-response relationships with various health outcomes. We compared the self-administered PA questionnaire from the Norwegian Women and Cancer Study (NOWAC) with a criterion method in middle-aged Norwegian women. Methods A sample of 177 randomly recruited healthy women attended two clinical visits approximately 4-6 months apart. At each visit, the women completed the NOWAC PA questionnaire (NOPAQ), rating their overall PA level on a 10-category scale (1 being a "very low" and 10 being a "very high" PA level) and performed an 8-minute step-test to estimate aerobic fitness (VO2max). After each visit, the women wore a combined heart rate and movement sensor for 4 consecutive days of free-living. Measures of PA obtained from the combined heart rate and movement sensor, which were used as criterion, included individually calibrated PA energy expenditure (PAEE), acceleration, and hours/day of moderate-to-vigorous intensity PA (MVPA). These were averaged between visits and compared to NOPAQ scores at visit 2. Results Intra-class correlation coefficients for objective measures from both free-living periods were in the range of 0.65-0.87 (P < 0.001), compared to 0.62 (P < 0.001) for NOPAQ. There was a moderate but significant (P < 0.001) Spearman's rank correlation coefficient in the range of 0.36-0.46 between NOPAQ and objective measures of PA. Linear trends for the association between the NOPAQ rating scale with PAEE, hours/day of MVPA and VO2max (P < 0.001) were also demonstrated. Conclusions Self-reported PA level measured on a 10-category scale appears valid to rank PA in a female Norwegian population.
dc.languageEnglishen
dc.language.isoen
dc.titleCriterion validity of a 10-category scale for ranking physical activity in Norwegian womenen
dc.typeArticle
dc.date.updated2012-02-29T16:14:45Z
dc.description.versionRIGHTS : This article is licensed under the BioMed Central licence at http://www.biomedcentral.com/about/license which is similar to the 'Creative Commons Attribution Licence'. In brief you may : copy, distribute, and display the work; make derivative works; or make commercial use of the work - under the following conditions: the original author must be given credit; for any reuse or distribution, it must be made clear to others what the license terms of this work are.en
dc.rights.holderBorch et al.; licensee BioMed Central Ltd.
prism.publicationDate2012en
dcterms.dateAccepted2012-01-19en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2012-01-19en
dc.contributor.orcidBrage, Soren [0000-0002-1265-7355]
dc.identifier.eissn1479-5868
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idAcademy of Medical Sciences (unknown)
pubs.funder-project-idMRC (MC_UU_12015/3)


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