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Cited by 22Physical Education and Training StudiesPhysical Activity and HealthPhysical Education and Pedagogy

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A randomized study of CrossFit Kids for fostering fitness and academic outcomes in middle school students.

Open access
Garst, Barry A., Bowers, Edmond P., Stephens, Lauren E.·2020·Evaluation and Program Planning
DOI 10.1016/j.evalprogplan.2020.101856
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Abstract

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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Citations

Cites

Research works printed but not linked: 30

  1. Allison, 2007, The decline in physical activity among adolescent students: A cross-national comparison, Canadian Journal of Public Health/Revue Canadienne de Sante’e Publique, 98, 97, 10.1007/BF03404317 · DOI
  2. Bakshi, 2008, Will CrossFit make American kids smarter?, CrossFit Journal, 1
  3. Bass, 2013, Physical fitness and academic performance in middle school students, Acta Paediatrica, 102, 832, 10.1111/apa.12278 · DOI · Paper page
  4. Baumeister, 2018, The Strength Model of Self-Regulation: Conclusions from the second decade of willpower research, Perspectives on Psychological Science, 13, 141, 10.1177/1745691617716946 · DOI · Paper page
  5. Bornstein, 2017, The specificity principle in acculturation science, Perspectives on Psychological Science, 12, 3, 10.1177/1745691616655997 · DOI · Paper page
  6. Castelli, 2007, Physical fitness and academic performance achievement in third- and fifth-grade students, Journal of Sport & Exercise Psychology, 29, 239, 10.1123/jsep.29.2.239 · DOI · Paper page
  7. Cohen, 1992, A power primer, Psychological Bulletin, 112, 155, 10.1037/0033-2909.112.1.155 · DOI · Paper page
  8. Crosnoe, 2002, Academic and health-related trajectories in adolescence: The intersection of gender and athletics, Journal of Health and Social Behavior, 43, 317, 10.2307/3090207 · DOI
  9. Dahab, 2009, Strength training in children and adolescents, Sports Health, 1, 223, 10.1177/1941738109334215 · DOI
  10. Durlak, 2008, Implementation matters: A review of research on the influence of implementation on program outcomes and the factors affecting implementation, American Journal of Community Psychology, 41, 327, 10.1007/s10464-008-9165-0 · DOI · Paper page
  11. Eather, 2016, Improving health-related fitness in adolescents: The CrossFit Teens™ randomised controlled trial, Journal of Sports Sciences, 34, 209, 10.1080/02640414.2015.1045925 · DOI
  12. Eather, 2016, Effects of exercise on mental health outcomes in adolescents: Findings from the CrossFit™ Teens randomized controlled trial, Psychology of Sport and Exercise, 26, 14, 10.1016/j.psychsport.2016.05.008 · DOI
  13. Fosse, 2009, Validity and stability of self-reported health among adolescents in a longitudinal, nationally representative survey, Pediatrics, 123, e496, 10.1542/peds.2008-1552 · DOI
  14. Hak, 2014, The nature and prevalence of injury during CrossFit training, Journal of Strength and Conditioning Research, 1, 1
  15. Hsieh, 2005, Three approaches to qualitative content analysis, Qualitative Health Research, 15, 1277, 10.1177/1049732305276687 · DOI · Paper page
  16. Karanicolas, 2010, Blinding: Who, what, when, why, how?, Canadian Journal of Surgery, 53, 345
  17. Klimek, 2018, Are injuries more common with CrossFit training than other forms of exercise?, Journal of Sport Rehabilitation, 27, 295, 10.1123/jsr.2016-0040 · DOI
  18. Kuncel, 2005, The validity of self-reported grade point averages, class ranks, and test scores: A meta-analysis and review of the literature, Review of Educational Research, 7, 63, 10.3102/00346543075001063 · DOI · Paper page
  19. Leffert, 1998, Developmental assets: Measurement and prediction of risk behaviors among adolescents, Applied Developmental Science, 2, 209, 10.1207/s1532480xads0204_4 · DOI
  20. Martínez-Vizcaíno, 2014, Gender differences on effectiveness of a school-based physical activity intervention for reducing cardiometabolic risk: A cluster randomized trial, The International Journal of Behavioral Nutrition and Physical Activity, 11, 154, 10.1186/s12966-014-0154-4 · DOI
  21. Morrow, 2010, Reliability and validity of the FITNESSGRAM®: Quality of teacher-collected health-related fitness surveillance data, Research Quarterly for Exercise and Sport, 81, S24, 10.1080/02701367.2010.10599691 · DOI
  22. Racette, 2017, Sex differences in FITNESSGRAM® health risk based on aerobic capacity and body composition among urban public elementary school children, Preventive Medicine, 103, 56, 10.1016/j.ypmed.2017.07.032 · DOI
  23. Richardson, 2011, Eta squared and partial eta squared as measures of effect size in educational research, Educational Research Review, 6, 135, 10.1016/j.edurev.2010.12.001 · DOI
  24. Schulz, 2010, CONSORT 2010 statement: updated guidelines for reporting parallel group randomized trials, Annals of internal medicine, 152, 726, 10.7326/0003-4819-152-11-201006010-00232 · DOI · Paper page
  25. Shenton, 2004, Strategies for ensuring trustworthiness in qualitative research projects, Education for Information, 22, 63, 10.3233/EFI-2004-22201 · DOI · Paper page
  26. Strong, 2005, Evidence based physical activity for school-age youth, Journal of Pediatrics, 146, 732, 10.1016/j.jpeds.2005.01.055 · DOI · Paper page
  27. Stuart, 2015, Assessing the generalizability of randomized trial results to target populations, Prevention Science, 16, 475, 10.1007/s11121-014-0513-z · DOI · Paper page
  28. Tremarche, 2007, Physical education and its effect on elementary testing results, The Physical Educator, 64, 58
  29. Wandzilak, 1988, Values development through physical activity: Promoting sportsmanlike behaviors, perceptions, and moral reasoning, Journal of Teaching in Physical Education, 8, 13, 10.1123/jtpe.8.1.13 · DOI
  30. Welk, 2011, Development of new criterion-referenced fitness standards in the FITNESSGRAM® program: Rationale and conceptual overview, American Journal of Preventive Medicine, 41, S63, 10.1016/j.amepre.2011.07.012 · DOI

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Metadata

Authors
Garst, B. A., Bowers, E. P., & Stephens, L. E.
Affiliations
Clemson University (US)
Corresponding author
Garst, Barry A.
ORCID
Venue
Evaluation and Program Planning
Publisher
Elsevier BV
Published
2020-12
Volume
83
Pages
101856
ISSN
0149-7189 (ISSN-L)
DOI
10.1016/j.evalprogplan.2020.101856
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
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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