Background
Physical inactivity is one of the four leading global health risks [
Does a heterogeneous sample of local primary schools use the contents of the ACTIPROS toolbox?In case that an intervention fails, do schools successfully switch to a different intervention?Is it feasible to conduct a CRCT evaluation of the ACTIPROS toolbox that is designed to improve PA among primary school students?To answer those research questions, the following objectives were formulated: to [