title: Hypermobility and joint hypermobility syndrome in Brazilian students and teachers of ballet dance.
abstract: The current literature has been discussing the risks and benefits of joint hypermobility (JHM) for careers in ballet This study aimed to evaluate the prevalence of JHM and joint hypermobility syndrome (JHS) in a group of ballet teachers and students, looking both at aspects related to the flexibility required to dance, as at the risk of injuries when hypermobility is associated with other symptoms, in the case of JHS. We evaluated ballet teachers and ballet students, with age ranging from 18 to 40 years. All participants completed identification and sociodemographic questionnaires and underwent a physical examination. JHM was assessed using the Beighton score with goniometry. Symptoms of JHS were evaluated according to the Brighton criteria. Final sample consisted of 77 participants, being 44 ballet students and 33 ballet teachers. The prevalence of JHM in the sample as a whole was 58 %. Teachers and students had no significant differences regarding the prevalence of JHM (p = 0.74) (OR 1.21; 95 % CI 0.48-3.07). However, the prevalence of JHS was significantly different (p = 0.04) between students (16 %) and teachers (36 %). Teachers were three times more likely than student to have JHS (OR 3.02; 95 % CI 1.03-8.85). Teachers and students also presented differences in the frequency of specific items of Beighton score and Brighton criteria. These data provide elements to discuss the relationship between hypermobility, ballet technique and selection for dance, suggesting that dancers with JHS could find in ballet teaching an alternative to maintain professional activity with dance, while remaining protected from the higher risk of injury that professional dancers may be exposed to.
authors.affiliation: Department of Neuroscience and Behavior, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, Terceiro Andar, Av. Bandeirantes, 3900, Ribeirão Preto, São Paulo, 14049-800, Brazil, shbianchi@uol.com.br.
authors.forename: S B
authors.initials: SB
authors.lastname: Sanches
authors.forename: G M
authors.initials: GM
authors.lastname: Oliveira
authors.forename: F L
authors.initials: FL
authors.lastname: Osório
authors.forename: J A S
authors.initials: JA
authors.lastname: Crippa
authors.forename: R
authors.initials: R
authors.lastname: Martín-Santos
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil / Q000453:epidemiology; D003615:Dancing / Q000502:physiology*; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000453:epidemiology* / Q000503:physiopathology*; D015995:Prevalence; D055815:Young Adult