Cultural Adaptation and Psychometric Evaluation of Physical Activity Social Cognitive Scales for Brazilian Adolescents
Cultural Adaptation and Psychometric Evaluation of Physical Activity Social Cognitive Scales for Brazilian Adolescents作者机构：Department of Nutrition School of Public Health University of Sao Paulo S6o Paulo 01246-904 Brazil Priority Research Centre in Physical Activity and Nutrition School of Education University of Newcastle New South Wales NSW2308 Australia
出 版 物：《Journal of Sports Science》 (运动科学（英文版）)
年 卷 期：2014年第2卷第3期
页 面：134-143页
主 题：Physical activity behavior psychosocial measures adolescents psychometrics validity scales.
摘 要：SCT （social cognitive theory） provides a useful framework to explain why people acquire and maintain PA （physical activity） behaviors among adolescents. This study aimed to adapt modernized Australian social cognitive scales of PA to the Portuguese language and evaluate their factorial and convergent validity and reliability. The adapted scales were tested in an adolescent sample from low-income communities in the city of Sao Paulo, Brazil （n = 173; 56.1% male）. Confirmatory factor analysis was employed to examine model-fit for each scale. The scales were assessed against self-report measures of moderate-to-vigorous physical activity for convergent validity. Reliability properties （ICC （lntra class confidence） and Cronbach＇s Alpha） were also determined. Each social cognitive scale represented a statistically sound measure： fit indices indicated each model to be adequate-to-exact fit to the data; significant correlations between most scales and either light, moderate or vigorous intensity PA behavior demonstrated good convergent validity; internal consistency was acceptable-to-good （α = 0.51-0.80）; rank order repeatability was acceptable-to-strong （ICC = 0.62-0.92）. Adapted social cognitive scales for physical activity for use among adolescents in the Brazilian context showed acceptable reliability and validity properties and may be useful to identify potential social cognitive correlates of PA, mediators of PA behavior change and the testing of theoretical models of SCT.
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