The Influence of Organized Physical Activity (Including Gymnastics) on Young Adult Skeletal Traits: Is Maturity Phase Important?
| Autor: | Sijian Wang, Brittney Bernardoni, Tamara A. Scerpella, Jodi N. Dowthwaite, Jill A. Kanaley, Quefeng Li, Paula F. Rosenbaum, Lindsay N. Raab |
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| Rok vydání: | 2015 |
| Předmět: |
medicine.medical_specialty
Adolescent Gymnastics Bone density Osteoporosis Physical Therapy Sports Therapy and Rehabilitation Lumbar vertebrae Bone and Bones Article Absorptiometry Photon Bone Density Predictive Value of Tests medicine Humans Body Weights and Measures Orthopedics and Sports Medicine Longitudinal Studies Prospective Studies Young adult Child Exercise Femoral neck Menarche Lumbar Vertebrae Femur Neck business.industry Anthropometry medicine.disease Radius medicine.anatomical_structure Predictive value of tests Pediatrics Perinatology and Child Health Physical therapy Female business |
| Zdroj: | Pediatric Exercise Science. 27:285-296 |
| ISSN: | 1543-2920 0899-8493 |
| Popis: | We prospectively evaluated adolescent organized physical activity (PA) as a factor in adult female bone traits. Annual DXA scans accompanied semiannual records of anthropometry, maturity, and PA for 42 participants in this preliminary analysis (criteria: appropriately timed DXA scans at ~1 year premenarche [predictor] and ~5 years postmenarche [dependent variable]). Regression analysis evaluated total adolescent interscan PA and PA over 3 maturity subphases as predictors of young adult bone outcomes: 1) bone mineral content (BMC), geometry, and strength indices at nondominant distal radius and femoral neck; 2) subhead BMC; 3) lumbar spine BMC. Analyses accounted for baseline gynecological age (years pre- or postmenarche), baseline bone status, adult body size and interscan body size change. Gymnastics training was evaluated as a potentially independent predictor, but did not improve models for any outcomes (p < .07). Premenarcheal bone traits were strong predictors of most adult outcomes (semipartial r2 = .21-0.59, p < .001). Adult 1/3 radius and subhead BMC were predicted by both total PA and PA 1-3 years postmenarche (p < .03). PA 3-5 years postmenarche predicted femoral narrow neck width, endosteal diameter, and buckling ratio (p < .05). Thus, participation in organized physical activity programs throughout middle and high school may reduce lifetime fracture risk in females. |
| Databáze: | OpenAIRE |
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