Validation evidence for the Netherlands physical activity questionnaire for young children: the Iowa bone development study.
Janz
Kathleen F
KF
Department of Health and Sports Studies, The University of Iowa, IA 52242, USA. kathleen-janz@uiowa.edu
Broffitt
Barbara
B
Levy
Steven M
SM
D001846:Bone Development; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D016552:Ergometry / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008019:Life Style; D016015:Logistic Models; D008297:Male; D009043:Motor Activity; D016017:Odds Ratio; D015203:Reproducibility of Results; D012737:Sex Factors; D011795:Surveys and Questionnaires; D013690:Television