The current article provides an important insight into measurement differences between two commonly used self-reports and accelerometer-determined moderate to vigorous physical activity (MVPA) scores within matched samples across 1 school year. Participants were 998 fifth- through eighth-grade students who completed self-reports and 76 fifth- and sixth-grade children with accelerometers. The Health Behavior in School-aged Children (HBSC) Research Protocol showed the higher frequency of days exceeding 60 minutes of MVPA than the International Physical Activity Questionnaire Short Form (IPAQ-SF). Larger proportions of children achieved the MVPA guidelines based on HBSC results (girls 16%, boys 29%), than IPAQ-SF (girls 5%, boys 11%), or accelerometers data (girls 0%, boys 0%). MVPA remained stable over 12 months on the basis of both self-report and accelerometer results. Both self-report scales presented should be used with discretion in population studies, whereas accelerometer-determined data can be more authentic when personal guidance is required.

Item Type:	Refereed Article
Keywords:	instrument, measurement, objective, physical activity, questionnaire
Research Division:	Education
Research Group:	Specialist studies in education
Research Field:	Specialist studies in education not elsewhere classified
Objective Division:	Health
Objective Group:	Evaluation of health and support services
Objective Field:	Evaluation of health outcomes
UTAS Author:	Grasten, A (Dr Arto Grasten)
ID Code:	113882
Year Published:	2016
Deposited By:	Education
Deposited On:	2017-01-24
Last Modified:	2017-11-20
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