Strengths and limitations
RECRUITMENT
One strength of this pilot study is that we tested the feasibility and acceptability of our ACTIPROS toolbox in a heterogenous sample of local primary schools. Recruitment of schools which was supported by the Bremen Senator for Children and Education went well and none of the participating school classes dropped out during the study period. Furthermore, we provided our parental study materials in seven different languages to avoid language barriers. Regarding participation in the DMT and provision of valid accelerometer data we received good response rates that are in line with those of similar studies while questionnaire data provision rates were lower in our study [