Validity and reliability of instruments to assess potential mediators of children's physical activity : a systematic review

Brown, Helen, Hume, Clare and ChinAPaw, Marijke 2009, Validity and reliability of instruments to assess potential mediators of children's physical activity : a systematic review, Journal of science and medicine in sport, vol. 12, no. 5, pp. 539-548.

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Title Validity and reliability of instruments to assess potential mediators of children's physical activity : a systematic review
Author(s) Brown, Helen
Hume, Clare
ChinAPaw, Marijke
Journal name Journal of science and medicine in sport
Volume number 12
Issue number 5
Start page 539
End page 548
Publisher Elsevier Australia
Place of publication Belconnen, A.C.T.
Publication date 2009-09
ISSN 1440-2440
1878-1861
Keyword(s) physical activity
children
mediators
validity
reliability
review
Summary This paper aimed to (1) identify potential mediators reported in children's physical activity interventions; and (2) review the psychometric properties of measures of potential mediators included in such interventions. A systematic search of the literature was conducted and studies that reported potential mediators and/or the psychometric properties of measures of potential mediators were retrieved and reviewed. The studies were reviewed for the following psychometric properties: face/logical, construct, and criterion validity; and test–retest and internal consistency (factor analysis and Cronbach's α) reliability. Twenty-one potential mediators were identified from 24 published children's physical activity intervention studies; 17 individual, three social, and one physical environmental. Overall, there was considerable variation in the reporting of the psychometric properties of these measures. Reliability properties (specifically Cronbach's α) were more commonly reported than validity properties; however, for many potential mediators, the quality of these measures was low. Future studies should examine the psychometric properties of measures of potential mediators to ensure appropriate, valid and reliable instruments are used. This will assist in the ability to accurately determine the efficacy of physical activity interventions among children.
Language eng
Field of Research 111706 Epidemiology
Socio Economic Objective 920401 Behaviour and Health
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30031100

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