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Primary Variablesa
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PA
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√ Weekly volume in moderate to vigorous PA and PA levels (ICC = 0.71)
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√ PA-related behavior change (ICC = 0.76)
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√ Preference for PA in leisure-time (ICC = 0.75)
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√ Active commuting (walking/cycling) to school (ICC = 0.89)
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Potential PA mediators
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√ Intrapersonal: Attitudes, self-efficacy and expectations (risks/benefits) (α range = 0.77–0.81)
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√ Interpersonal: family, friend and teacher support (α range = 0.84–0.90)
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√ Environmental: Neighborhood and school perception (α range = 0.61–0.78)
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Screen time
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√ Daily time watching TV on weekdays and weekends days (ICC = 0.72 and 0.56)
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√ Daily time using computer/video games on weekdays and weekends days (ICC = 0.80 and 0.75)
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√ Reducing TV watching-related behavior change stage (ICC = 0.80)
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√ Reducing computer/videogames using-related behavior change stage (ICC = 0.78)
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Potential reducing screen time mediators
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√ Intrapersonal: attitude, self-efficacy and expectations (risks/benefits) (α range = 0.64–0.85)
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√ Interpersonal: family modelling, support and norms (α range = 0.56–0.78)
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√ Environmental: family and school environment, house and bedroom characteristics (α range = 0.73–0.85)
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Secondary variablesa
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√ Body mass index
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√ Self-rated health (ICC = 0.90)
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√ Waist circumference
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√ Stress perception (ICC = 0.79)
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√ Eating habits (ICC range = 0.71-0.89)
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√ Body image (ICC = 0.85)
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√ Alcohol use (ICC = 0.71)
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√ Sleep quality and duration (ICC range = 0.59-0.75)
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√ Tobacco use (ICC = 0.99)
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√ Sleepiness (α = 0.62)
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√ Condom use (ICC = 0.98)
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√ Academic performance
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√ Quality of life (ICC = 0.78)
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√ School attendance
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Descriptive variablesa
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√ Age (ICC = 0.99)
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√ Mother’s schooling (ICC = 0.92)
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√ Gender (Kappa = 1.00)
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√ Student’s occupational status (Kappa = 0.90)
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√ Father’s schooling (ICC = 0.86)
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√ Family’s economy class (ICC = 0.93)
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Subsample (obese) Variablesa
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√ Depressive symptoms (α = 0.90)
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√ Objectively-measured PA
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√ Eating disorders (α = 0.80)
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√ Objectively-measured sedentary time
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√ Sleep quality (α = 0.83)
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Evaluation variables
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√ Interest of the school community for the program proposal (before baseline)
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√ Visibility of the program during implementation (during the program)
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√ Execution process of the strategies (during the program)
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√ Interest in keeping the strategies in the future (immediately after the end of the program)
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√ Maintenance of the program strategies (six months after the end of the program)
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√ Start-up and operational costs (economic evaluation)
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