Author/Authors :
Rohani، Hosein نويسنده PhD Candidate, Department of Health Education and Promotion, School of Health, Qom University of Medical Sciences, Qom, Iran , , Eslami، Ahmad Ali نويسنده School of Health, Isfahan University of Medical Sciences, Isfahan, Iran Eslami, Ahmad Ali , Ghaderi، Arsalan نويسنده PhD Candidate, Social Determinants of Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran , , Jafari Koshki، Tohid نويسنده Department of Biostatistics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran , , Sadeghi، Erfan نويسنده Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran , , Bidkhori، Mohammad نويسنده MSc Student, Department of Epidemiology, Tehran University of Medical Sciences, Tehran, Iran , , Raei، Mehdi نويسنده Department of Biostatistics, Faculty of Medicine, Qom University of Medical Sciences, Qom, Iran Raei, Mehdi
Abstract :
Background: Moderate increase in physical activity (PA) may be helpful in preventing or postponing the complications of type 2 diabetes mellitus (T2DM). The aim of this study was to assess the psychometric properties of a health action process approach (HAPA)-based PA inventory among T2DM patients. Methods: In 2015, this cross-sectional study was carried out on 203 participants recruited by convenience sampling in Isfahan, Iran. Content and face validity was confirmed by a panel of experts. The comments noted by 9 outpatients on the inventory were also investigated. Then,the items were administered to 203 T2DM patients. Construct validity was conducted using exploratory and structural equation modeling confirmatory factor analyses. Reliability was also assessed with Cronbach alpha and inter-class correlation coefficient (ICC). Results: Content validity was acceptable (CVR = 0.62, CVI = 0.89). Exploratory factor analysis extracted seven factors (risk- perception, action self-efficacy, outcome expectancies, maintenance self-efficacy, action and coping planning, behavioral intention, and recovery self efficacy)explaining 82.23% of the variation. The HAPA had an acceptable fit to the observations(χ2 = 3.21, df = 3, P = 0.38; RMSEA = 0.06; AGFI = 0.90; PGFI = 0.12). The range of Cronbach alpha and ICC for the scales was about 0.63 to 0.97 and 0.862 to 0.988, respectively. Conclusion: The findings of the present study provided an initial support for the reliability and validity of the HAPA-based PA inventory among patients with T2DM.
