Wiandani, Kadek Nadinda Putri, et al. “The Relationship of Physical Activity to Cardiorespiration Endurance in Children Aged 10-12 Years ”. JOURNAL RESPECS (Research Physical Education and Sports), vol. 5, no. 1, Jan. 2023, pp. 31-37, doi:10.31949/respecs.v5i1.3313.