Condition category
Musculoskeletal Diseases
Date applied
11/06/2018
Date assigned
23/06/2018
Last edited
19/06/2018
Prospective/Retrospective
Retrospectively registered
Overall trial status
Completed
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims
Hypermobility is not well understood. The aim of this study was to identify how common joint hypermobility syndrome (JHS) is within jazz dancers, to test different ways of identifying JHS and to assesspotential risk factors for joint hypermobility in jazz dancers.

Who can participate?
Jazz dancers aged 18-25 years from the Polish Dance Theater

What does the study involve?
The participants were assessed for JHS symptoms using the following diagnostic tools: a structured interview, Beighton score (a physical test of joint flexibility), Grahame & Hakim questionnaire, and Sachse’s criteria, in the modified version proposed by Kapandji.

What are the possible benefits and risks of participating?
The benefit of the study for participants is the diagnosis or exclusion of JHS. This study demonstrated a signicant prevalence of joint hypermobility in jazz dancers and corroborates the findings of other researchers, indicating the need for unified diagnostic criteria for JHS in dancers. Participants do not bear any risk by taking part in the study.

Where is the study run from?
Kielce Dance Theater.

When is the study starting and how long is it expected to run for?
January 2013 to January 2014.

Who is funding the study?
The study was funded by the principal investigator.

Who is the main contact?
Marlena Skwiot, marlena.skwiot@gmail.com

Trial website

Contact information

Type

Public

Primary contact

Dr Marlena Skwiot

ORCID ID

Contact details

Piastowska street 20B
Czerwin
07-407
Poland
660699238
marlena.skwiot@gmail.com

Additional identifiers

EudraCT number

ClinicalTrials.gov number

Protocol/serial number

01/2018

Study information

Scientific title

Comparing prevalence of joint hypermobility syndrome in jazz dancers using a structured interview, Beighton score, Grahame & Hakim questionnaire, and Kapandji-modified Sachse’s criteria

Acronym

Study hypothesis

To assess the prevalence of joint hypermobility syndrome (JHS) amongst a cohort of jazz dancers, by analyzing its presence in accordance with a number of diagnostic criteria, and to verify potential risk factors for joint hypermobility in jazz dancers.

Ethics approval

Bioethics Commission of the Faculty of Health Sciences of the University of Jan Kochanowski in Kielce, 11/03/2013, 01/2013

Study design

Cross-sectional cohort study

Primary study design

Observational

Secondary study design

Cross sectional study

Trial setting

Other

Trial type

Diagnostic

Patient information sheet

Not available in web format, please use contact details to request a participant information sheet

Condition

Joint hypermobility syndrome (JHS)

Intervention

Data on the participants, including dance history and current dance performance, and the JHS symptoms they experienced was collected through a structured interview. Specific questions were asked about injuries, symptoms typical for the hypermobility syndrome such as chronic spinal pain, temporomandibular joint disorders and out-of-joint symptoms such as possible skin lesions, myopia, varicose veins. Interviews were carried out by the same physiotherapist. All subjects underwent anthropometric assessment with measures taken of standing height, using a stadiometer, and weight, using a standard set of scales. The presence of joint hypermobility syndrome was evaluated using the following diagnostic tools: Beighton score, Grahame & Hakim questionnaire, and Sachse’s criteria, in the version modified by Kapandji.

Intervention type

Not Specified

Phase

Drug names

Primary outcome measure

Prevalence of JHS

Secondary outcome measures

N/A

Overall trial start date

10/01/2013

Overall trial end date

10/01/2014

Reason abandoned (if study stopped)

Eligibility

Participant inclusion criteria

1. Aged between 18 and 25 years
2. At least 3 years of dancing experience
3. Jazz dance as the dominant dance style

Participant type

Other

Age group

Adult

Gender

Both

Target number of participants

77

Participant exclusion criteria

Injuries preventing dancing

Recruitment start date

12/02/2013

Recruitment end date

12/03/2013

Locations

Countries of recruitment

Poland

Trial participating centre

Kielce Dance Theatre
Moniuszki Place 2B
Kielce
25-334
Poland

Sponsor information

Organisation

Marlena Skwiot

Sponsor details

Piastowska Street 20B
Czerwin
07-407
Poland
660699238
marlena.skwiot@gmail.com

Sponsor type

Other

Website

Funders

Funder type

University/education

Funder name

Uniwersytet Jana Kochanowskiego w Kielcach

Alternative name(s)

Jan Kochanowski University, Jan Kochanowski University in Kielce, UJK, JKU

Funding Body Type

private sector organisation

Funding Body Subtype

academic

Location

Poland

Results and Publications

Publication and dissemination plan

Planned publication in a high-impact peer-reviewed journal

IPD sharing statement
The datasets generated and/or analysed during the current study during this study will be included in the subsequent results publication.

Intention to publish date

01/07/2019

Participant level data

To be made available at a later date

Basic results (scientific)

The prevalence of JHS in the analyzed sample differed significantly, depending on the criteria of the analysis χ2(2) = 13.786; p = 0.001. According to the Sachse’s criteria, in the version modified by Kapandji, 59.7% of participants were diagnosed with JHS. On the other hand, Beighton’s score yielded a result of 64.9%, and Hakim & Grahame questionnaire a result of 74%.
On the basis of the structured interview, 46 participants, who were diagnosed with hypermobility using Sachse’s scale, revealed symptoms which may be related to JHS with chronic pain in the lumbar spine being the dominant one (56.5%). Reporting sensations of dislocations of the lower limbs was the second most frequently occurring symptom (39.1%). 28.3% of the participants reported having suffered an ankle sprain in the past. Temporomandibular joint (TMJ) pain was the least frequently experienced symptom among the participants.
The chi-square test of independence showed a correlation between hypermobility and the participants’ gender. Hypermobility was significantly more prevalent in women than men, regardless of which diagnostic criteria were adopted: Sachse – χ2(1) = 11.206; p = 0.001, Beighton – χ2(1) = 6.485; p = 0.011, Hakim & Grahame – χ2(1) = 11.199; p = 0.001.
Due to the differences in JHS prevalence in men and women, the male and female participants were compared with regard to the following variables: body mass [kg], height [m], dancing experience [years], frequency of practice sessions [h/week], using the Mann-Whitney U test. The results showed that, on average, women were thinner (M = 53.64, SD = 5.61 vs. M = 72.68, SD = 5.04; U = 3.5, p < 0.0001) and shorter (M = 166.96, SD = 3.61 vs. M = 178.68, SD = 4.27; U = 24.5, p < 0.0001) than men. No significant differences between men and women were found with regard to their dancing experience (M = 9.42, SD = 4.83 vs. M = 10.21, SD = 4.32; U = 403.5, p = 0.339), the frequency of practice sessions (M = 12.36, SD = 14.22 vs. M = 19.16, SD = 16.26; U = 355.5, p = 0.112).

Publication list

Publication citations

Additional files

Editorial Notes