An observational study in Postural Balance, sponsored by Ayse Merve TAT. Completed at 1 site in Turkey (Türkiye). Open to male participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-11-24.
Sponsored by Ayse Merve TAT · Observational
Introduction: Recurrent hemarthrosis in hemophilia can cause deterioration of static and dynamic balance in hemophilia. Studies in AwH report decreased dynamic balance, but consistent results regarding static balance are lacking. The causes of the decrease in dynamic balance and its associated parameters have been under explored.
Aim: To investigate static and dynamic balance in AwH compared to healthy controls and factors such as joint health, physical activity and kinesiophobia that may affect dynamic balance.
Methods: This cross-sectional controlled study included 41 AwH and 40 healthy controlled, totally 81 man and study groups determined as Hemophilia Group (HG) and Control Group (CG). Static (Static Stability Test) and dynamic balance (Limits of Stability Test (LoS) Test) were assessed Pro-kin Technobody Posturographic Platform; physical activity level with International Physical Activity Questionnaire (IPAQ) for all groups. Joint health and kinesiophobia were assessed with Hemophilia Joint Health Score and Tampa Scale for Kinesiophobia (TSK) for HG, respectively. Participants' age, height and weight were questioned in both groups, as well as type and severity of hemophilia, type of treatment, and work/job status in HG.
866 studies on the registry are indexed under Hemophilia A; 137 are open to participants now.
This study's enrollment of 81 is close to the median of 80 across 314 observational studies indexed under Hemophilia A.
Browse Hemophilia A studies →This is the only study on the registry with Ayse Merve TAT as lead sponsor.
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Hemophilia patients and healthy volunteers
Severe or moderate hemophilia A or B
Exclusion Criteria:
Diabetus mellitus, hemiplegia, rheumatoid arthritis, Alzheimer's disease, Parkinson's disease, all vestibular system pathologies, lower extremity surgery within the last 6 months, using a walking aid.
Healthy individual
Diagnostic Test: Postural balance assessment
Adults with Hemophilia
Diagnostic Test: Postural balance assessment
Static and dynamic balance was analyzed with the posturographic platform.
Static and Dynamic Balance Assessment
Static and dynamic balance assessments were performed using the Pro-kin Technobody Posturographic Platform (Pro-kin 212, Technobody s.r.l., Dalmine, 21044 Bergamo, Italy). Static balance was assessed using the "Static Stability Test." This test is based on the subject's oscillations on the force platform, assessing the movement of the center of pressure, and the trunk sensor measuring trunk oscillation. Dynamic balance will be assessed using the Limits of Stability test. For the LoS test, a medium difficulty level (20 levels) will be selected from the 5-10-20-30-40 difficulty levels. Participants will be asked to orient their center of gravity toward eight directional targets for a limited time.
Time frame: From enrollment to at 4 weeks
Joint Health
This was assessed with Hemophilia Joint Health Score (HJHS). The HJHS evaluates the knee, elbow, and ankle index joints bilaterally and includes a walking score. Each joint can receive a maximum of 20 points, with a maximum walking score of 4 points (total score = 124). A higher score indicates poor joint health. Since the elbow joint score will not be used in this study, the maximum score was determined as 84.
Time frame: From enrollment to 4 weeks
Physical Activity Level
Physical activity was evaluated with the International Physical Activity Questionnaire (IPAQ) Short Form. The IPAQ short form consists of seven questions to be answered by the patient and asks about the duration and frequency of each activity performed during the past week. The total score is calculated in MET-min/week by multiplying the MET values defined for walking (3.3 METs), moderate-intensity physical activity (4.0 METs), and vigorous-intensity physical activity (8.0 METs) by the duration (minutes) and frequency (days). Sitting is not included in the score. High scores indicate high physical activity.
Time frame: From enrollment to 4 weeks
Kinesiophobia
Kinesiophobia will be assessed with the Tampa Scale for Kinesiophobia. Kinesiophobia is defined as the fear of reinjury and movement due to chronic pain. It consists of 17 questions, with total scores ranging 17-68. The higher the score is the gretaer the level of kinesiophobia, and scores above 37 are considered high kinesiophobia
Time frame: From enrollment to 4 weeks
Plan to share: Undecided
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