Safety and Health at Work

Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency (산업안전보건연구원)
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Assessment of Questionnaire of Physical Activity at Workplace Based on the Social Cognitive Theory (PAWPQ-SCT): A Psychometric Study in Iranian Gas Refinery Workers

  • Kamel Ghobadi (Department of Health Education and Health Promotion, School of Health, Isfahan University of Medical Sciences) ;
  • AhmadAli Eslami (Department of Health Education and Health Promotion, School of Health, Isfahan University of Medical Sciences) ;
  • Asiyeh Pirzadeh (Department of Health Education and Health Promotion, School of Health, Isfahan University of Medical Sciences) ;
  • Seyed Mohammad Mazloomi (Nutrition Research Center, School of Nutrition, Shiraz University of Medical Sciences) ;
  • Fatemeh Hosseini (Department of Public Health, School of Health, Qazvin University of Medical Sciences)
  • Received : 2023.02.22
  • Accepted : 2023.09.12
  • Published : 2023.12.30
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Abstract

Background: This study aimed to develop and assess the psychometric features of the Physical Activity at Workplace Questionnaire (PAWPQ) based on the Social Cognitive Theory (SCT) to evaluate employees' physical activity (PA) behaviors at the workplace. Methods: This psychometric cross-sectional study was conducted on 455 employees working in one of the gas refineries in Iran. The participants were selected using the proportional stratified sampling method in 2019. The data collection tools were a demographic information questionnaire, the short form of the International Physical Activity Questionnaire (IPAQ), and a questionnaire developed based on the SCT, whose psychometric features were confirmed in terms of validity and reliability. Data were analyzed using SPSS22 and AMOS20 software. Results: The first version of PAWPQ-SCT had 74 items. After evaluating content and face validity, nine items were removed. The results of the content validity index (0.98), content validity ratio (0.86), and impact score (3.62) were acceptable for the whole instrument. In exploratory factor analysis, after removing seven items-58-item final version of the scale-six factors could explain 73.54% of the total variance. The results of structural equation modeling showed the acceptable fit of the model into the data (RMSEA = 0.052, CFI = 0.917, NFI = 0.878, TLI = 0.905, IFI = 0.917, CMIN/DF = 2.818). Cronbach's alpha coefficient and Intraclass Correlation were 0.90 and 0.86, respectively. Conclusion: This study confirmed that the psychometric features of the 58-item final version of PAWPQSCT constructs were acceptable in a sample of Iranian employees. This questionnaire can be used as a valid and reliable tool to evaluate Iranian employees' PA behaviors and develop effective educational interventions for workers and managers.

Keywords

Acknowledgement

This article was part of a Ph.D. dissertation in health education and health promotion. Moreover, it was financially supported by Isfahan University of Medical Sciences, Isfahan, Iran (research project no. 398877).

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