Evidence map›Paper›PMID 28656365›Full record

ArticleOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2017

Bone mineral density in vocational and professional ballet dancers.

T Amorim, Y Koutedakis, A Nevill, M Wyon, J Maia, J C Machado, F Marques, G S Metsios, A D Flouris, N Adubeiro and 2 more

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.0field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 27 citations in OpenAlex.

  1. Eating Attitudes and Anthropometric Indices of Adult Women in Performance Dance: A Case-Control Study in Greece.European eating disorders review : the journal of the Eating Disorders Association · 2026
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  12. Nutrition and Athlete Bone Health.Sports medicine (Auckland, N.Z.) · 2019
    Review
  13. Genetic variation in Wnt/β-catenin and ER signalling pathways in female and male elite dancers and its associations with low bone mineral density: a cross-section and longitudinal study.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2018
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 6 institutions in 3 countries.

T AmorimCentre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Rua Dr. Plácido Costa 91, 4200-450, Porto, Portugal. tania_amorim@hotmail.com.
Y KoutedakisFaculty of Education, Health and Wellbeing, University of Wolverhampton, Walsall, UK.
A NevillFaculty of Education, Health and Wellbeing, University of Wolverhampton, Walsall, UK.
M WyonFaculty of Education, Health and Wellbeing, University of Wolverhampton, Walsall, UK.
J MaiaCentre of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Rua Dr. Plácido Costa 91, 4200-450, Porto, Portugal.
J C Machadoi3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
F MarquesFaculty of Pharmacy, University of Porto, Porto, Portugal.
G S MetsiosFaculty of Education, Health and Wellbeing, University of Wolverhampton, Walsall, UK.
A D FlourisSchool of Sports and Exercise Sciences, University of Thessaly, Trikala, Greece.
N AdubeiroSchool of Health Technology of Porto, Polytechnic Institute of Porto, Porto, Portugal.
L NogueiraSchool of Health Technology of Porto, Polytechnic Institute of Porto, Porto, Portugal.
L DimitriouLondon Sport Institute, Middlesex University, London, UK.
Universidade do Porto · PTUniversity of Wolverhampton · GBPolytechnic Institute of Porto · PTUniversity of Thessaly · GRi3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto · PTMiddlesex University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

According to existing literature, bone health in ballet dancers is controversial. We have verified that, compared to controls, young female and male vocational ballet dancers have lower bone mineral density (BMD) at both impact and non-impact sites, whereas female professional ballet dancers have lower BMD only at non-impact sites.

introductionThe aims of this study were to (a) assess bone mineral density (BMD) in vocational (VBD) and professional (PBD) ballet dancers and (b) investigate its association with body mass (BM), fat mass (FM), lean mass (LM), maturation and menarche.

methodsThe total of 152 VBD (13 ± 2.3 years; 112 girls, 40 boys) and 96 controls (14 ± 2.1 years; 56 girls, 40 boys) and 184 PBD (28 ± 8.5 years; 129 females, 55 males) and 160 controls (27 ± 9.5 years; 110 female, 50 males) were assessed at the lumbar spine (LS), femoral neck (FN), forearm and total body by dual-energy X-ray absorptiometry. Maturation and menarche were assessed via questionnaires.

resultsVBD revealed lower unadjusted BMD at all anatomical sites compared to controls (p < 0.001); following adjustments for Tanner stage and gynaecological age, female VBD showed similar BMD values at impact sites. However, no factors were found to explain the lower adjusted BMD values in VBD (female and male) at the forearm (non-impact site), nor for the lower adjusted BMD values in male VBD at the FN. Compared to controls, female PBD showed higher unadjusted and adjusted BMD for potential associated factors at the FN (impact site) (p < 0.001) and lower adjusted at the forearm (p < 0.001). Male PBD did not reveal lower BMD than controls at any site.

conclusionsBoth females and males VBD have lower BMD at impact and non-impact sites compared to control, whereas this is only the case at non-impact site in female PBD. Maturation seems to explain the lower BMD at impact sites in female VBD.

Indexed as

Occupational HealthAbsorptiometry, PhotonAdolescentAdultAnthropometryBody Mass IndexBone DensityCase-Control StudiesChildDancingFemaleFemur NeckForearmHumansLumbar VertebraeMaleAssociated factorsBallerinasBone massElite dancePrevalence

Identifiers

PMID28656365
OpenAlexW2725624312

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.