Endocrine parameters in association with bone mineral accrual in young female vocational ballet dancers
Authors
Amorim, TâniaMetsios, George S.
Flouris, Andreas D.
Nevill, Alan M.
Gomes, Thayse Natacha
Wyon, Matthew
Marques, F
Nogueira, L
Adubeiro, Nuno
Jamurtas, Athanasios Z.
Maia, José
Koutedakis, Yiannis
Issue Date
2019-04-09
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Purpose Little is known on bone mass development in dancers involved in vocational training. The aim of the present study was to model bone mineral content (BMC) accruals and to determine whether circulating levels of oestrogens, growth hormone (GH) and insulin-like growth factor I (IGF-1) explain differences in bone mass gains between vocational dance students and matched-controls. Methods The total of 67 vocational female dancers (VFD) and 68 aged-matched controls (12.1±1.9yrs and 12.7±2.0yrs at baseline, respectively) were followed for two consecutive years (34 VFD and 31 controls remained in the study for the full duration). BMC was evaluated annually at impact [femoral neck (FN); lumbar spine (LS)], and non-impact sites (forearm) using DXA. Anthropometry, age at menarche (questionnaire) and hormone serum concentrations (immunoradiometric assays) were also assessed for the same period. Results VFD demonstrated consistently reduced body weight (p<0.001) and BMC at all three anatomical sites (p<0.001) compared to controls throughout the study period. Menarche, body weight, GH and IGF-1 were significantly associated with bone mass changes over time (p<0.05) but did not explain group differences in BMC gains at impact sites (p>0.05). However, body weight did explain the differences between groups in terms of BMC gains at the forearm (non-impact site). Conclusion Two consecutive years of vocational dance training revealed that young female dancers demonstrate consistently lower bone mass compared to controls at both impact and non-impact sites. The studied endocrine parameters do not seem to explain group differences in terms of bone mass gains at impact sites.Citation
Amorim, T., Metsios, G.S., Flouris, A.D. et al. (2019)Endocrine parameters in association with bone mineral accrual in young female vocational ballet dancers, Archives of Osteoporos (2019) 14: 46. https://doi.org/10.1007/s11657-019-0596-zPublisher
SpringerJournal
Archives of OsteoporosisAdditional Links
https://link.springer.com/article/10.1007/s11657-019-0596-zType
Journal articleLanguage
enISSN
1862-3522ae974a485f413a2113503eed53cd6c53
10.1007/s11657-019-0596-z
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