Indeed there have been, I can't recall the exact study, but I found a meta-analy...

lambdaba 6 months ago | parent | context | favorite | on: School absences have ‘exploded’ almost everywhere

Indeed there have been, I can't recall the exact study, but I found a meta-analysis here: [Physical Activity and Academic Performance in School-Age Children: A Systematic Review ](https://www.mdpi.com/2071-1050/15/8/6616).