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ORIGINAL ARTICLE
Year : 2016  |  Volume : 21  |  Issue : 2  |  Page : 183-190

Development and psychometric properties of a self-regulation scale about leisure time physical activity in Iranian male adolescents


1 Department of Health Education and Promotion, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran
2 Department of Health Education and Promotion, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3 Vice-Chancellery for Health, Department of Health Education, Isfahan University of Medical Sciences, Isfahan, Iran

Correspondence Address:
Ahmad Ali Eslami
Department of Health Education and Promotion, School of Public Health, Isfahan University of Medical Sciences, Isfahan
Iran
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Source of Support: This article has been derived from a thesis for PhD degree on health education and promotion in Isfahan School of Public Health, which was supported by the Deputy of Research of Isfahan University of Medical Sciences, that its number is 391476., Conflict of Interest: None


DOI: 10.4103/1735-9066.178246

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Background: Self-regulation is one of the current psychological concepts that have been known as a determinant of leisure time physical activity. Due to cultural and social diversity in different societies and age groups, application of specific questionnaires is essential to perform investigations about physical activities. The aim of this study is development and evaluation of psychometric properties of a self-regulation questionnaire about leisure time physical activity in Iranian male adolescents. Materials and Methods: This cross-sectional study was conducted in 2013, and data of 603 male students from 12 high schools in Isfahan were collected. A comprehensive literature review and similar questionnaire review were conducted and 25 items were selected or developed to measure self-regulation. Comprehensibility of items was evaluated in a pilot study and an expert panel evaluated face and content validity. Exploratory factors analysis (EFA) was used for evaluation of construct validity and extraction of sub-constructs of self-regulation. Leisure time physical activity was assessed using International Physical Activity Questionnaire (IPAQ). Results: The mean age of the participants was 16.3 years (SD =1.0) and the range was 15-19 years. Cronbach's α coefficient of the questionnaire in the pilot and main study was 0.84 and 0.90, respectively. EFA resulted in four sub-constructs including "enlistment of social support," "goal setting," "self-construction," and "self-monitoring," which explained 63.6% of the variance of self-regulation. Conclusions: Results of this investigation provide some support to the validity and reliability of the 16-item questionnaire of self-regulation abut leisure time physical activity in the target group.


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