Impact of School-Based Physical Activity on Academic Performance in Primary Students

Thesis Abstract

This study investigates the relationship between school-based physical activity and academic performance among primary school students, addressing concerns that physical activity may influence cognitive functioning, attention, and learning outcomes within crowded curricula and limited physical education time. The problem centers on inconsistent empirical evidence regarding the magnitude and mechanisms by which regular physical activity contributes to academic achievement in primary grades, and the necessity to identify context-specific factors that moderate this relationship. The aim is to quantify the impact of a structured school-based physical activity program on academic achievement and to elucidate the behavioral, cognitive, and psychosocial pathways that underpin this relationship. Specific objectives are to (1) assess changes in standardized test scores in mathematics and language arts over a 9-month intervention period; (2) examine changes in students’ on-task behavior, attention, and classroom engagement through teacher ratings and objective metrics; (3) investigate mediating effects of executive functions, mood, and physical fitness on academic outcomes; (4) explore potential moderating effects of gender, baseline fitness, and socioeconomic status; and (5) generate evidence-based recommendations for school policy and curriculum design. A quasi-experimental mixed-methods design will be employed in 24 public primary schools, with 12 schools implementing a supervised, daily 20-minute moderate-to-vigorous physical activity (MVPA) program integrated into core instructional time, while 12 matched control schools maintain existing schedules. The population comprises students in Grades 4–6 (approximately 2,400 children). A multi-stage sampling approach will select schools, with a sample of 1,200 students (600 intervention, 600 control) completing standardized achievement assessments at baseline, midline (4.5 months), and endline (9 months). Quantitative data will include standardized mathematics and language arts test scores, teacher-rated on-task behavior and attention, and objective fitness measures (PACER test, body mass index). Additionally, cognitive function will be assessed via tasks measuring executive functions (n-back, Stroop task) in a subsample of 400 students (200 per group). Qualitative data will be collected through focus groups with teachers and brief student interviews (n=40 teachers, 40 students) to contextualize quantitative findings. Instruments will include validated academic assessments aligned with national standards, standardized teacher observation protocols for classroom engagement, and reliable psychometric scales for mood and self-regulation. Validity and reliability will be established through pilot testing, expert panel reviews, and calculation of Cronbach’s alpha for internal consistency and test-retest reliability where applicable. Data analysis will employ hierarchical linear modeling (HLM) to account for nested data (students within classes within schools) and to estimate intervention effects on academic outcomes, controlling for baseline performance and covariates. Mediation analyses using structural equation modeling (SEM) will test whether changes in executive function and mood mediate the relationship between physical activity and academic achievement. Moderation analyses will examine differential effects by gender, baseline fitness, and socioeconomic status. Thematic analysis of interview transcripts will identify contextual factors influencing implementation fidelity, teacher perceptions, and student motivation, with triangulation to enrich interpretation. Key expected findings include statistically significant improvements in mathematics and language arts scores in the intervention group relative to controls, accompanied by enhanced on-task behavior, greater classroom engagement, and improvements in selected executive function measures. It is anticipated that improvements in academic performance will be partially mediated by enhancements in executive functioning and mood, with stronger effects among students with lower baseline fitness and among girls in certain subject areas. The study contributes to knowledge by providing robust, context-specific evidence on how embedded, time-efficient physical activity within school routines affects primary students’ academic outcomes, clarifying underlying cognitive and affective mechanisms, and identifying moderators that inform targeted intervention design. The anticipated contribution includes informing policy makers and educators about the efficacy and feasibility of integrating daily MVPA into core curricula, guiding resource allocation for school-based physical activity initiatives, and offering a validated model for evaluating similar interventions in diverse educational settings. The final conclusion is that structured, school-based MVPA, when implemented with fidelity and accompanied by supportive instructional practices, yields meaningful academic benefits for primary students, particularly for those with lower initial fitness, and that the benefits are maximized when physical activity is aligned with cognitive and behavioral supports within the classroom. Recommendations emphasize scalable, equity-focused implementation, ongoing professional development for teachers, and integration of physical activity with academic content to sustain improvements beyond the intervention period.