An observational study in Sports Injuries, Overuse Injuries and Acrobatic Gymnastics, sponsored by Istanbul Galata University. Recruiting at 1 site in Bulgaria. Open to participants aged 11 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-11-12.
Sponsored by Istanbul Galata University · Observational
The goal of this observational study is to understand how injury risk is related to dynamic and static balance, foot posture, training characteristics, and sleep quality in competitive acrobatic gymnasts of different ages, sexes, categories, and positions (base, middle, top). The main questions it aims to answer are:
Do acute and overuse injury occurrence and severity differ by age, sex, acrobatic category, and position in the pyramid?
Are injury risks associated with balance performance, foot posture index, overuse injury questionnaire scores, and sleep quality scores?
Participants will:
Complete online questionnaires including a sports injury/overuse questionnaire (OSTRC-O) and the Pittsburgh Sleep Quality Index (PSQI).
Provide information on age, sex, training history, acrobatic category and position, and previous injuries.
Undergo balance and foot posture assessments according to the study protocol.
260 studies on the registry are indexed under Athletic Injuries; 46 are open to participants now.
This study's planned enrollment of 300 is above the median of 103 across 92 observational studies indexed under Athletic Injuries.
Browse Athletic Injuries studies →Istanbul Galata University is the lead sponsor of 11 studies on the registry; 5 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Competitive acrobatic gymnasts training in clubs in Bulgaria, Italy, and other European countries will be included. Participants of both sexes across youth and adult age groups, actively training and competing in acrobatic gymnastics in base, middle, or top positions, will be recruited.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Oslo Sports Trauma Research Center Overuse Injury Questionnaire (OSTRC-O)
Injury presence and severity over the last 12 months assessed by the Oslo Sports Trauma Research Center Overuse Injury Questionnaire (OSTRC-O); total score categorized as injury vs. no-injury (score \>0 vs. 0). Used to evaluate Injury occurrence and severity in acrobatic gymnasts.
Time frame: Baseline
Sociodemographic Assessment
The athletes' age, sex, weight, height, sports history, daily and weekly training hours, number of years participating in this sport, history of physical/recreational activities, and social participation habits will be investigated using a specially designed questionnaire.
Time frame: Baseline
Body Mass Index (BMI)
Body mass index (BMI) will be calculated by dividing weight in kilograms by the square of height in meters (kg/m²).
Time frame: Baseline
6-item Foot Posture Index (FPI)
Foot posture will be assessed using the 6-item Foot Posture Index (FPI), which scores each foot from -2 to +2 per item and yields a total score indicating supinated (negative values), neutral (0 to +5), or pronated (\>+5) foot posture based on standardized photographs taken in relaxed standing.
Time frame: Baseline
Pittsburgh Sleep Quality Index (PSQI)
Sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PSQI), a 19-item self-report questionnaire that yields a total score from 0 to 21, where higher scores indicate worse sleep quality and scores above 5 reflect poor clinical sleep quality.
Time frame: Baseline
Started May 2025 (actual). Primary completion is estimated for Jun 2027, 24 months after the start.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Istanbul Galata University