Physiological Parameters of Bone Health in Elite Ballet Dancers
| Autor: | Michael T Cain, Steven M. Petak, Patrick C. McCulloch, Joshua D. Harris, Bradley S. Lambert, Tyler Heimdal, Vijay Jotwani |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty Fractures Stress Cumulative Trauma Disorders Population Physical Therapy Sports Therapy and Rehabilitation Feeding and Eating Disorders 03 medical and health sciences Young Adult 0302 clinical medicine Absorptiometry Photon Sex Factors Bone Density Risk Factors medicine Body Fat Distribution Humans Orthopedics and Sports Medicine Disordered eating Dancing education Pelvic Bones Retrospective Studies Bone mineral education.field_of_study Stress fractures Overtraining business.industry 030229 sport sciences Anthropometry medicine.disease Spine Oligomenorrhea Spinal Injuries Cohort Lean body mass Physical therapy Body Composition Female business Biomarkers |
| Zdroj: | Medicine and science in sports and exercise. 52(8) |
| ISSN: | 1530-0315 |
| Popis: | Stress fractures are common among elite ballet dancers whereby musculoskeletal health may be affected by energy balance and overtraining.This study aimed to characterize bone health in relation to stress fracture history, body composition, eating disorder risk, and blood biomarkers in professional male and female ballet dancers.A single cohort of 112 dancers (male: 55, 25 ± 6 yr; female: 57, 24 ± 6 yr) was recruited. All participants underwent bone and body composition measures using dual-energy x-ray absorptiometry. In a subset of our cohort (male: 30, 24 ± 6 yr; female, 29, 23 ± 5 yr), a blood panel, disordered eating screen, menstrual history, and stress fracture history were also collected. Age-matched Z scores and young-adult T scores were calculated for bone mineral density (BMD) and body composition. Independent-samples t-tests and Fisher's exact tests were used to compare BMD, Z-scores, T scores, and those with and without history of stress fractures. A 1 × 3 ANOVA was used to compare BMD for those scoring 0-1, 2-6, and 7+ using the EAT26 questionnaire for eating disorder risk. Regression was used to predict BMD from demographic and body composition measures.Female dancers demonstrated reduced spinal (42nd percentile, 10%T-1) and pelvic (16th percentile, 76%T-1) BMD. Several anthropometric measures were predictive of BMD (P0.05, r = 0.65-0.81, standard error of estimate = 0.08-0.10 g·cm, percent error = 6.3-8.5). Those scoring1 on EAT26 had lower BMD than did those with a score of 0-1 (P0.05).Professional female ballet dancers exhibit reduced BMD, fat mass, and lean mass compared with the general population whereby low BMD and stress fractures tend to be more prevalent in those with a higher risk of disordered eating. Anthropometric and demographic measures are predictive of BMD in this population. |
| Databáze: | OpenAIRE |
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