No significant accelerometer-based differences in physical activity were found for boys in Playworks schools compared with control schools¶

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2015 · checked against its sources 2026-10-17 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

q3 i? In the same 29-school randomized trial, accelerometer measures showed no significant differences for boys in Playworks schools versus control schools. → Martha Bleeker 2015

Evidence¶

Martha Bleeker 2015¶

Martha Bleeker, Nicholas Beyler, Susanne James-Burdumy, Jane Fortson. (2015). The Impact of Playworks on Boys' and Girls' Physical Activity During Recess. Journal of School Health, vol. 85, no. 3. https://www.mathematica.org/publications/the-impact-of-playworks-on-boys-and-girls-physical-activity-during-recess

q3 · i? · causal · r2

Null finding from the same randomized evaluation of 29 schools using accelerometer measurement, with impacts estimated separately for girls and boys. No statistically significant difference was detected for boys; equivalence was not tested and no effect size is printed.

"No significant differences based on accelerometer data were found for boys."

Discussion¶

Learner Variables¶

• Gender — moderator: an instructional effect differs by group
• Physical Well-Being — outcome: instruction changes it

Related Claims¶

• GenAI function, intervention duration, publication year, and gender were not significant moderators of GenAI's motivational effect — the general claim this finding bears on, with the studies behind it
• Playworks showed significant impact on some measures of girls' physical activity but no significant impact on measures of boys' physical activity — a broader claim this one bears on
• Girls in Playworks schools had significantly higher accelerometer intensity counts and spent more time in vigorous physical activity than girls in control schools — related
• In a randomized controlled trial, children in Playworks schools spent more time in vigorous physical activity at recess than students at non-Playworks schools, and more teachers in Playworks schools reported students engaged in intense recess activity — related
• Teachers in Playworks schools reported significantly better student behavior at recess and readiness for class — related
• Girls in Playworks schools were less likely to be sedentary and more likely to engage in jumping, tag, and playground games during recess — related