Healthy Harlem generally increased students' fitness levels, with variation by gender¶

Claim · All claims
Evidence · 1 study · causal r? · q2
Currency · newest study 2017 · checked against its sources 2026-10-08 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i? Students' fitness levels generally increased, though the gains varied by gender. → Mabli 2017

Evidence¶

Mabli 2017¶

Mabli, J., Bleeker, M., & Fox, M. K. (2017). The Impact of Healthy Harlem on the Prevalence of Child Overweight and Obesity and Contributing Factors: Interim Evaluation Report. Washington, DC: Mathematica Policy Research. https://www.mathematica.org/publications/the-impact-of-healthy-harlem-on-the-prevalence-of-child-overweight-and-obesity-and-contributing

q2 · i? · causal · r?

The evaluation's key findings report that the program "Generally increased students’ levels of fitness, although there is some variation by gender." Fitness was one of the study's examined outcome domains; no statistics are printed in the available text.

"Generally increased students’ levels of fitness, although there is some variation by gender."

Discussion¶

Learner Variables¶

Physical Well-Being — outcome: instruction changes it

Increases in the percentage of students in the Harlem Fitness Zone were generally larger for boys than for girls — a narrower finding that bears on this claim
Overweight or obese students who participated in Get Fit and Prevention had large and statistically significant increases in PACER laps two and three years later — a narrower finding that bears on this claim
The percentage of students in the targeted Harlem Fitness Zone was significantly greater after two and three years of participation than at baseline — related
Among students overweight or obese at baseline who received both Get Fit and Prevention, BMI z-scores and overweight/obesity prevalence were reduced — a narrower finding that bears on this claim
Healthy Harlem had some positive impacts on other measures of student self-efficacy and social support — related
Healthy Harlem increased students' nutrition knowledge and physical-activity self-efficacy, with gains sustained over three years — related

Page metadata

Field	Value
`type`	`claim`
`id`	`healthy-harlem-fitness-gains-vary-by-gender`
`title`	`Healthy Harlem generally increased students' fitness levels, with variation by gender`
`description`	`Healthy Harlem generally increased students' fitness levels, with variation by gender`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2017`
`source_checked`	`2026-10-08`
`generated`	by `process:wiki-ingest` on `2026-10-08`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `mabli-2017`

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