Active commuting to school and associated health indicators: evaluation protocol of the PACO study "Cycle and Walk to School" and its implementation in secondary school

It is essential to develop an evaluation protocol to develop rigor and homogeneity in any research study. Likewise, some considerations are specifically needed if the research is carried out in an educational context and in different schools. This work aims to describe y the evaluation protocol of the research study entitled: PACO Study "Cycle and Walk to School". In addition, it provides global recommendations and practical applications in the educational context. The main objective of the PACO Study is to promote the behaviour of active commuting among students of Compulsory Secondary Education to improve their physical activity levels and other associated health indicators. For this reason, the evaluation protocol includes the specific methodology and instruments for evaluating variables such as: 1) mode of commuting to school and other psychosocial factors associated with active commuting through the PACO student questionnaire, 2) family bathers to active commuting to school through the PACO families questionnaire, 3) anthropometric characteristics (weight, height, waist and neck circumference), 4) levels of physical activity and energy expenditure evaluated by accelerometry and 5) characteristics of the real home-school route through a Global Positioning System. The transparency in the methodology and logistic necessary to evaluate the variables in the educational context is key to evaluate the rigor and homogeneity in future implementations, whether they are carried out by researchers or teachers. Finally, the obtained data will be reliable and relevant to implement educational strategies in order to promote an integral health of the adolescents.