Strengths and limitations
SECONDARY
The present study has diverse strengths that should be mentioned: (i)the study is carried out on a sample of secondary education students. This is an educational stage which has received less attention in the scientific literature than primary and preschool education; (ii) the PAL intervention involves a collaborative approach between mathematics teachers and researchers, ensuring a higher level of sustainability of the intervention. This co-development process enhances the integration of PA into academic lessons and promotes long-term adoption by teachers; (iii) the study design will bring new evidence allowing to control the internal validity of the results. In addition, to corroborate the stability over time of the strategies offered, a follow-up measure of 4 weeks is incorporated at the end of the intervention.On the other hand, some limitations should be mentioned: (i) the generalizability of the study results may be limited to the specific school context and characteristics of the participants included in the study (i.e., facilities, teachers, student motivation, etc.); (ii) the stability of the interventions may be compromised once the research team’s support is no longer available. Maintaining the AB and PAL interventions in real school settings without the continued support of the research team can be challenging.