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A randomized study of CrossFit Kids for fostering fitness and academic outcomes in middle school students.
Open accessAbstract
Within the context of school-based physical education (PE), a strength and conditioning program called CrossFit Kids (CFK) has emerged as a potential intervention for positively impacting students. The purpose of this study was to evaluate through a randomized-controlled trial how academic and health-related fitness outcomes differed for middle school students (age = 12.73; 55.3 % male) who participated in a school-based CFK program (n=72) as compared to a group of students who participated in PE class (n=72). Questionnaire data were collected twice across the 9-month academic year and combined with FitnessGram and grade data. Students in both the intervention and comparison groups increased in health-related fitness outcomes (all p values < .017), and there was a significant treatment group by time interaction on school-reported grades [F(1, 124) = 7.270, p = .008, η_P^2 = .055]. Significant gender by time interaction effects were found for the relationship between CFK or PE participation and health-related fitness outcomes, but there were no significant interaction effects by gender on academic outcomes. Because developmental outcomes are conditional and result from the coaction of many factors, the findings suggest that some elements of CFK might be beneficial to build skills yet disadvantageous to academic outcomes.
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Cited by
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Wang, T., & Guo, C. (2022) · International Journal of Environmental Research and Public Health · doi:10.3390/ijerph19084678 · Cited by 13
“Most of the existing studies found that there is no significant gender difference in the positive effect of physical activity on academic achievement [13], or that girls’ academic achievement income in physical activity is significantly higher than that of boys [12,46].”
BackgroundYang, Y. (2025) · Journal of teaching in physical education · doi:10.37766/inplasy2025.3.0111
Metadata
- Authors
- Garst, B. A., Bowers, E. P., & Stephens, L. E.
- Affiliations
- Clemson University (US)
- Corresponding author
- Garst, Barry A.
- Venue
- Evaluation and Program Planning
- Publisher
- Elsevier BV
- Published
- 2020-12
- Volume
- 83
- Pages
- 101856
- ISSN
- 0149-7189 (ISSN-L)
- OpenAlex
- W3047495697
- Cited by
- 22
- References
- 12
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 3 · 2023: 3 · 2022: 7 · 2021: 3
- FWCI
- 5.90
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Evaluation and Program Planning (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- Funders
- Youth Leadership Academy
- Topics
- Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Physical Education and Training Studies
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Physical Activity and Health
- Social Sciences › Education › Physical Education and Pedagogy
- Keywords
- school-based physical education, strength and conditioning, health-related physical fitness, academic performance, junior high school students, gender differences, physical activity interventions, FITNESSGRAM
- MeSH terms
- Child, Female, Humans, Male, Physical Education and Training, Physical Fitness, Schools, Students, Program Evaluation, Exercise
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