Validity and reliability of measures assessing social-cognitive determinants of physical activity in low-active Australian adults

Richard R. Rosenkranz, Karly S. Geller, Mitch J. Duncan, Cristina M. Caperchione, Corneel Vandelanotte, Anthony J. Maeder, Trevor N. Savage, Anetta K. Van Itallie, Gregory S. Kolt

Research output: Contribution to journalArticle

Abstract

This cross-sectional study of 504 community-dwelling Australian adults (328 females, 176 males, mean age 50.8 ± 13.0 years) sought to examine the reliability and validity of measurement scales for physical activity (PA) self-efficacy and outcome expectations. Participants completed demographic and anthropometric measurements, and a 23-item psychosocial questionnaire pertinent to an intervention target of 10,000 steps per day. Exploratory (n = 252) and confirmatory (n = 252) factor analyses were conducted to determine psychometric properties of the measures. Based on theory and goodness-of-fit indices, six factors were extracted from the questionnaire: PA self-efficacy; PA barriers self-efficacy (including general, personal, and conflict); and physical and mental outcome expectations. From confirmatory factor analysis, the model demonstrated good data fit in four out of five indices: CFI = 0.99; TLI = 0.99; SRMR = 0.03; RMSEA = 0.03, 90%CI = 0.01–0.05, χ2 = 113.14 (88), p = 0.04; including good fit by sex, age, weight status, education, and birth country. PA interventions can employ our psychometrically sound social cognitive measures.

Original languageEnglish
Pages (from-to)322-331
Number of pages10
JournalMeasurement in Physical Education and Exercise Science
Volume22
Issue number4
DOIs
Publication statusPublished - 13 Apr 2018

Keywords

  • Factorial validity
  • health behaviour
  • motivation
  • psychometrics
  • social cognitive theory

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    Rosenkranz, R. R., Geller, K. S., Duncan, M. J., Caperchione, C. M., Vandelanotte, C., Maeder, A. J., Savage, T. N., Van Itallie, A. K., & Kolt, G. S. (2018). Validity and reliability of measures assessing social-cognitive determinants of physical activity in low-active Australian adults. Measurement in Physical Education and Exercise Science, 22(4), 322-331. https://doi.org/10.1080/1091367X.2018.1457963