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BioMed Central, International Journal of Behavioral Nutrition and Physical Activity, 1(10), p. 74

DOI: 10.1186/1479-5868-10-74

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Development and initial validation of the determinants of physical activity questionnaire

Journal article published in 2013 by Natalie Taylor, Rebecca Lawton, Mark Conner ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract Background Physical activity interventions are more likely to be effective if they target causal determinants of behaviour change. Targeting requires accurate identification of specific theoretical determinants of physical activity. Two studies were undertaken to develop and validate the Determinants of Physical Activity Questionnaire. Methods In Study 1, 832 male and female university staff and students were recruited from 49 universities across the UK and completed the 66-item measure, which is based on the Theoretical Domains Framework. Confirmatory factor analysis was undertaken on a calibration sample to generate the model, which resulted in a loss of 31 items. A validation sample was used to cross-validate the model. 20 new items were added and Study 2 tested the revised model in a sample of 466 male and female university students together with a physical activity measure. Results The final model consisted of 11 factors and 34 items, and CFA produced a reasonable fit χ 2 (472) = 852.3, p