Abstract
BackgroundIn this study the one and six months effects of the computer-tailored YouRAction (targeting individual level determinants) and YouRAction+e (targeting in addition perceived environmental determinants) on compliance with the moderate-to-vigorous physical activity (MVPA) guideline and weight status are examined. In addition the use and appreciation of both interventions are studied.MethodsA three-armed cluster randomized trial was conducted in 2009–2010 with measurements at baseline, one and six months post intervention. School classes were assigned to one of the study arms (YouRaction, YouRAction+e and Generic Information (GI) control group). MVPA was derived from self-reports at baseline, one and six months post intervention. Body Mass Index and waist circumference were measured at baseline and six months post intervention in a random sub-sample of the population. Use of the interventions was measured by webserver logs and appreciation by self-reports. Multilevel regression analyses were conducted to study the effects of the intervention against the GI control group. ANOVA's and chi-square tests were used to describe differences in use and appreciation between study arms.ResultsThere were no statistically significant intervention effects on compliance with the MVPA guideline, overweight or WC. Access to the full intervention was significantly lower for YouRAction (24.0%) and YouRAction+e (21.7%) compared to the GI (54.4%).ConclusionThis study could not demonstrate that the YouRAction and YouRAction+e interventions were effective in promoting MVPA or improve anthropometric outcomes among adolescents, compared to generic information. Insufficient use and exposure to the intervention content may be an explanation for the lack of effects.Trial RegistrationTrialRegister.nl NTR1923
Highlights
Promoting physical activity (PA) among adolescents is a public health priority [1,2], especially because most adolescents in the Netherlands – like elsewhere [3,4,5,6] do not meet the guideline of being moderate-to-vigorously physically active (MVPA) for at least one hour each day [7]
It is likely that there is a large variability in PA levels, awareness of one’s own PA level, attitude, self-efficacy, intention to change and opportunities to be active in the residential neighbourhood among adolescents
The present paper describes the evaluation of the effects of the comprehensive YouRAction interventions as compared to generic information among Dutch adolescents
Summary
Promoting physical activity (PA) among adolescents is a public health priority [1,2], especially because most adolescents in the Netherlands – like elsewhere [3,4,5,6] do not meet the guideline of being moderate-to-vigorously physically active (MVPA) for at least one hour each day [7]. To promote MVPA among adolescents and to gain insight in the additional effect of incorporating environmental feedback in computer-tailored interventions two versions of the computer tailored Youth of Rotterdam in Action (YouRAction) intervention were developed [23]. The basic YouRAction intervention targets individual level determinants, whereas the YouRAction+e intervention targets individual and perceived environmental determinants (e.g. awareness of availability of sports facilities in the residential neighbourhood). Both versions of the intervention are web-based and developed for use in school classes. In this study the one and six months effects of the computer-tailored YouRAction (targeting individual level determinants) and YouRAction+e (targeting in addition perceived environmental determinants) on compliance with the moderate-to-vigorous physical activity (MVPA) guideline and weight status are examined. In addition the use and appreciation of both interventions are studied
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