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adolescent sport activity intervention study facility sports facilities availability health environment participation sports participation factor association behaviour youraction objective school level intention model behavior neighbourhood determinant chapter measure analyses research cycling attitude leisure time theory group education baseline table lt sports participation result difference neighborhood rotterdam feedback program effect development change information follow-up opportunity evaluation buffer leisure evidence number behav computer-tailored variable influence adolescence class method compliance review netherland interaction adult control phase questionnaire 2006. perception pa behaviour behavioural children level factors capital self-efficacy objective measures background mvpa guideline