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Construct validity and test-retest reliability of the International Fitness Scale (IFIS) in Spanish children aged 9-12 years

dc.contributor.authorSánchez-López M.
dc.contributor.authorMartínez-Vizcaíno V.
dc.contributor.authorGarcía-Hermoso A.
dc.contributor.authorJiménez-Pavón D.
dc.contributor.authorOrtega F.B.
dc.date.accessioned2020-09-02T22:28:51Z
dc.date.available2020-09-02T22:28:51Z
dc.date.issued2015
dc.identifier10.1111/sms.12267
dc.identifier.citation25, 4, 543-551
dc.identifier.issn09057188
dc.identifier.urihttps://hdl.handle.net/20.500.12728/6367
dc.descriptionWe aimed to examine (a) the construct validity and reliability of the International Fitness Scale (IFIS) in children; and (b) the association of both self-reported and measured fitness with cardiometabolic risk. Cross-sectional study in 1145 Spanish children (9-12 years). We measured body fat, waist circumference, blood pressure, lipids, insulin, and fitness level (reported and measured). A validated cardiometabolic syndrome index was used. An age- and sex-matched sample of 245 children originally not included in the study sample fulfilled IFIS twice for reliability purposes. IFIS was able to correctly classify children according to their measured fitness levels (analysis of covariance, adjusted for sex and age was used). Test-retest reliability of IFIS items was also good, i.e., average weighted Kappa=0.70. Our data also suggest that both measured and reported cardiorespiratory, and speed and agility fitness were associated with cardiometabolic risk factors, such as adiposity and a cardiometabolic syndrome risk score. The associations for muscular fitness (both reported and measured) differed depending on how it was expressed (i.e., absolute vs relative terms). Our findings suggest that self-reported fitness, as assessed by IFIS, is a valid, reliable, and health-related measure, and it can be a good alternative at population level when physical fitness cannot be measured. © 2014 John Wiley & Sons A/S.
dc.language.isoen
dc.publisherBlackwell Munksgaard
dc.subjectAdiposity
dc.subjectCardiovascular diseases
dc.subjectPhysical fitness
dc.subjectRisk factors
dc.subjectSchoolchildren
dc.subjectSelf-report
dc.subjectinsulin
dc.subjectlipid
dc.subjectblood
dc.subjectblood pressure
dc.subjectchild
dc.subjectcross-sectional study
dc.subjectexercise test
dc.subjectfitness
dc.subjecthand strength
dc.subjecthuman
dc.subjectobesity
dc.subjectphysiology
dc.subjectreproducibility
dc.subjectrisk assessment
dc.subjectrunning
dc.subjectself report
dc.subjectSpain
dc.subjectvalidation study
dc.subjectwaist circumference
dc.subjectAdiposity
dc.subjectBlood Pressure
dc.subjectChild
dc.subjectCross-Sectional Studies
dc.subjectExercise Test
dc.subjectHand Strength
dc.subjectHumans
dc.subjectInsulin
dc.subjectLipids
dc.subjectPhysical Fitness
dc.subjectReproducibility of Results
dc.subjectRisk Assessment
dc.subjectRunning
dc.subjectSelf Report
dc.subjectSpain
dc.subjectWaist Circumference
dc.titleConstruct validity and test-retest reliability of the International Fitness Scale (IFIS) in Spanish children aged 9-12 years
dc.typeArticle


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