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- Sperimentazione clinica NCT00067925
A School-Based Osteoporosis Prevention Program for Adolescent Girls
Incorporating More Physical Activity and Calcium in Teens (IMPACT): A School-Based Osteoporosis Prevention Program for Adolescent Girls
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Peak bone mass is achieved during the first twenty years of life, and dietary and activity patterns that contribute to the formation of peak bone mass are developed during childhood. The IMPACT intervention was designed to increase bone density and ultimately prevent osteoporosis during adulthood. IMPACT included physical education, food service, and classroom environmental and behavioral components and was delivered by physical education (PE) specialists, food service personnel, and classroom teachers.
A group of 718 sixth grade girls (mean age 11.1) from twelve middle schools in central Texas participated in the study. The group was 72% non-Hispanic white, 12% Hispanic, 5% African American, and 11% other ethnicity. After baseline measurements were completed in the fall of 2000, the twelve middle schools were pair-matched based on school characteristics (ethnicity, % economically disadvantaged, % girls in athletics) to a control (usual health education program) or the IMPACT program. The intervention was implemented for 18 months and consisted of three major components: a PE component, which emphasized daily weight-bearing activities (WBA); a health lessons component consisting of sixteen behaviorally-based lessons which emphasized WBA, calcium-rich foods, and osteoporosis prevention; and a food service component.
Outcome measures included physical properties of the students' heel bones, calcium consumption, physical activity, and psychosocial factors believed to be precursors to these behaviors. Changes at the school environmental level, such as the number of calcium rich foods offered in the cafeteria and the number of opportunities offered for weight-bearing and aerobic activity, were also assessed.
Tipo di studio
Iscrizione
Fase
- Fase 1
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Girls enrolled in 6th grade of selected schools
- Student assent
- Parental consent
- No fractures or medications that compromise bone health or strength
- Enrolled in 2 semesters of physical education
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Prevenzione
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Nessuno (etichetta aperta)
Collaboratori e investigatori
Investigatori
- Investigatore principale: Deanna M Hoelscher, PhD, University of Texas-Houston School of Public Health
Pubblicazioni e link utili
Pubblicazioni generali
- Sharma SV, Hoelscher DM, Kelder SH, Diamond P, Day RS, Hergenroeder A. Psychosocial factors influencing calcium intake and bone quality in middle school girls. J Am Diet Assoc. 2010 Jun;110(6):932-6. doi: 10.1016/j.jada.2010.03.013.
- Sharma SV, Hoelscher DM, Kelder SH, Diamond PM, Day RS, Hergenroeder AC. A path analysis to identify the psychosocial factors influencing physical activity and bone health in middle-school girls. J Phys Act Health. 2009 Sep;6(5):606-16. doi: 10.1123/jpah.6.5.606.
- Sharma SV, Hoelscher DM, Kelder SH, Day RS, Hergenroeder A. Psychosocial, environmental and behavioral factors associated with bone health in middle-school girls. Health Educ Res. 2009 Apr;24(2):173-84. doi: 10.1093/her/cyn009. Epub 2008 Mar 21.
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Maggiori informazioni
Termini relativi a questo studio
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Altri numeri di identificazione dello studio
- R01HD037767 (Sovvenzione/contratto NIH degli Stati Uniti)
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .