2011
DOI: 10.1590/s1519-38292011000300011
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Abstract: OBJECTIVES: to develop a questionnaire to measure factors associated with physical activity (PA) in adolescents and analyze its reliability and validity. METHODS: a total of 248 adolescents from 14 to 19 years old took part in this study. The factors associated with PA measured were: attitude, self-efficacy, social support of PA and perceived environment. Cronbach's alpha (α) and intraclass correlation coefficients (ICC) were used to test reliability, and exploratory factor analysis to evaluate validity. RESUL… Show more

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Cited by 36 publications
(56 citation statements)
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“…Have used different analysis procedures to assess the psychometric properties of the scale, especially the evaluation of factorial invariance, was another strong point of this study. The CFA's results supported this study's hypothesis that assumed the presence of two factors in the social support's scale: (1) social support from parents, (2) social support from friends, confirming the results found in this scale's exploratory analysis 19 . This two factors presence confirmation in the scale of social support assessed in this study is consistent with the proposition that the literature has shown that social support can come from different social groups, especially the support provided by parents and friends [12][13][14] .…”
Section: Discussionsupporting
confidence: 82%
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“…Have used different analysis procedures to assess the psychometric properties of the scale, especially the evaluation of factorial invariance, was another strong point of this study. The CFA's results supported this study's hypothesis that assumed the presence of two factors in the social support's scale: (1) social support from parents, (2) social support from friends, confirming the results found in this scale's exploratory analysis 19 . This two factors presence confirmation in the scale of social support assessed in this study is consistent with the proposition that the literature has shown that social support can come from different social groups, especially the support provided by parents and friends [12][13][14] .…”
Section: Discussionsupporting
confidence: 82%
“…The social support for physical activity practices among adolescents scale -ASAFA Scale -was drawn from the compilation of items from other scales applied in adolescents 19 . The scale's initial version contained 12 items, including 6 for parents' social support and 6 friends' social support, considering different types of support (to stimulate, to practice, to watch, to ask, to comment and to carry or provide transportation).…”
Section: Methodsmentioning
confidence: 99%
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“…The scales used to measure the psychosocial and perceived environmental factors are described in Table 1. Detailed information about the development and validation process of these scales are described in Farias Júnior et al 20 . Scores for each of the psychosocial and perceived environmental factors were determined from the sum of points attributed to each answer.…”
Section: Data Collection and Measuresmentioning
confidence: 99%