I’ve to do a project study for my master’s program, and I’m trying to examine if “physical activity influences youth academic performance” through reviewing literature and producing a systemic review to highlight important results. I have found some studies that focus on this topic, and feel free to look for any more studies that are based on the topic.   
Hillman and colleagues (2009) 
Trudeau and Shephard (2008)
Singh and colleagues (2012)
Experimental
observations of the effects of physical exercise on attention, academic and
prosocial performance in school settings (Spitzer & Hollmann, 2013)
Does fitness make
the grade? The relationship between elementary students’ physical fitness and
academic grades (Lorenz et al., 2016)
Schools With Fitter
Children Achieve Better Literacy and Numeracy Results: Evidence of a School
Culture Effect (Telford et al., 2012)