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Development and initial validation of the Brunel lifestyle physical activity questionnaire
  1. C I Karageorghis1,
  2. M M Vencato1,
  3. N L D Chatzisarantis1,
  4. A V Carron2
  1. 1School of Sport and Education, Brunel University, Uxbridge, West London, UK
  2. 2University of Western Ontario, London, Ontario, Canada
  1. Correspondence to:
 Dr Karageorghis
 School of Sport and Education, Brunel University, West London, Uxbridge, Middlesex UB8 3PH, UK;


Objectives: To develop a valid and reliable internet based lifestyle physical activity questionnaire suitable for use among the United Kingdom population.

Methods: After a detailed content analysis and item generation using a panel of experts, an internet based measure of lifestyle physical activity behaviour was developed. Data were collected from 1369 subjects in total. Confirmatory factor analysis was used to examine the two subscales of the Brunel lifestyle physical activity questionnaire among independent samples and by use of multisample analyses.

Results: The confirmatory factor analysis showed the psychometric integrity of two subscales: planned physical activity and unplanned physical activity.

Conclusion: The questionnaire is a valid and reliable instrument designed to provide an online behavioural assessment to be used in conjunction with a 12 week personalised fitness programme delivered through the internet.

  • BLPAQ, Brunel lifestyle physical activity questionnaire
  • CFA, confirmatory factor analysis
  • CFI, comparative fit index
  • EFA, exploratory factor analysis
  • PA, physical activity
  • PPA, planned physical activity
  • SRMR, standardised root mean residual
  • UPA, unplanned physical activity
  • EQS
  • internet questionnaire
  • physical activity
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  • Present address: N L D Chatzisarantis is now at the School of Sport and Health Sciences, University of Exeter, Exeter, Devon, UK

    Competing interests: The research was funded in part by Biomedical Research Ltd, Republic of Ireland. The questionnaire reported in the study is used as part of an on line health and fitness programme. Although the research was sponsored by a commercial organisation, this had absolutely no bearing on the results.

  • Ethics: The study received ethical approval from the institutional review board and written informed consent was sought from subjects.

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