HemophiliaNCT05981313
Viscoelastic Properties of Lower Extremity Muscles in Patients With Hemophilia
An observational study of Hemophilia and Hemophilia A, run by Hasan Kalyoncu University at 1 site in Turkey (Türkiye).
Trial summary
The aim of our study is to evaluate the viscoelastic properties of lower extremity muscles in patients with hemophilia A and hemophilia B secondarily to compare them with their healthy peers. Read more about this study
- Who is it for?
- Ages 4 to 17 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Hemophilia, Hemophilia A, Hemophilia B
- How many people
- 40 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Aug 2023to 30 Dec 2023
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 4 to 17 years
- Men only
- Healthy volunteers accepted
- Child
Study population: Pediatric group hemophilia A and hemophilia B children living in Gaziantep constitute the study population.
Who may be able to join
- Children aged 4-17 years
- Those who have been diagnosed with Hemophilia A and Hemophilia B by a physician
- No history of acute bleeding
- Children who have family consent and volunteer to participate in the study
Who cannot join
- Those with a history of lower extremity surgery
- Those with neurological disease
- Those with a history of lower extremity hemarthrosis or hematoma in the last 1 month
- Patients with inhibitor positive
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Hasan Kalyoncu University
Gaziantep, Şahinbey, 27100
About this study
Official title: Evaluation of Viscoelastic Properties of Lower Extremity Muscles in Patients With Hemophilia
The aim of our study is to evaluate the viscoelastic properties of lower extremity muscles in patients with hemophilia A and hemophilia B secondarily to compare them with their healthy peers.
Read the detailed description
Hemophilia is a rare inherited coagulation disorder that develops as a result of factor VIII (hemophilia A) or factor IX (hemophilia B) deficiency, and is a chronic group of diseases that mainly manifests with intra-articular (hemarthrosis) and intramuscular (hematoma) bleeding, affecting quality of life. The presence of easy ecchymosis formation in early childhood, especially intra-articular and intramuscular spontaneous bleeding, interventions and a history of bleeding that lasted longer than expected after trauma should suggest hemophilia. The severity of bleeding findings is directly related to the degree of deficiency of hemophilia A and B. Hemarthroses due to bleeding in the joint (80%) and hematomas due to intramuscular bleeding (20%) cause joint degeneration and muscle atrophy. The joint in which hemarthrosis is most common is the knee joint, however, bleeding into the lower extremity muscles seriously affects the activities of daily living and lower extremity functionality. For this reason, the researchers aimed to evaluate the viscoelastic properties of lower extremity muscles in hemophilia patients and, secondarily, to compare them with their healthy peers.
- Conditions
- Hemophilia, Hemophilia A, Hemophilia B
- Keywords
- Hemophilia, Muscle tone, Stiffness, Elasticity
- Medical subject headings
- Hemophilia A, Hemophilia B
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Hemophilia Group | The viscoelastic properties (tone, stiffness, elasticity) of the lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) of hemophilia patients who meet the study criteria will be evaluated with the MyotonPro device (Myoton Ltd). | |
| Control Group | The viscoelastic properties (tone, stiffness, elasticity) of the lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) of healthy children meeting the study criteria will be evaluated with the MyotonPro device (Myoton Ltd). |
What is being measured
The primary outcome is the main question the study is designed to answer.
Lower extremity moscle tone (Hz)
The tone (Hz) of lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) will be evaluated with MyotonPro device (Myoton Ltd). Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis and Tibialis Anterior muscle measurements will be made from the reference points determined in the supine relaxed position, while Biceps Femoris and Gastrocnemius measurements will be made in the prone position with the ankle in the neutral position. Participants will be allowed to rest on the table for 10 minutes before the measurements are taken. The viscoelastic measurement will be repeated three times by determining the reference points (cm) of the relevant muscles and the averages will be recorded. Only measurements with a coefficient of variation less than 3% will be taken into account, otherwise the measurements will be repeated.
Measured: through of the study, average 6 months
Lower extremity stiffness (N/m)
The stiffness (N/m) of lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) will be evaluated with MyotonPro device (Myoton Ltd). Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis and Tibialis Anterior muscle measurements will be made from the reference points determined in the supine relaxed position, while Biceps Femoris and Gastrocnemius measurements will be made in the prone position with the ankle in the neutral position. Participants will be allowed to rest on the table for 10 minutes before the measurements are taken. The viscoelastic measurement will be repeated three times by determining the reference points (cm) of the respective muscles and the averages will be recorded. Only measurements with a coefficient of variation less than 3% will be taken into account, otherwise the measurements will be repeated.
Measured: through of the study, average 6 months
Lower extremity elasticity (log)
The elasticity (log) of lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) will be evaluated with MyotonPro device (Myoton Ltd). Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis and Tibialis Anterior muscle measurements will be made from the reference points determined in the supine relaxed position, while Biceps Femoris and Gastrocnemius measurements will be made in the prone position with the ankle in the neutral position. Participants will be allowed to rest on the table for 10 minutes before the measurements are taken. The viscoelastic measurement will be repeated three times by determining the reference points (cm) of the respective muscles and the averages will be recorded. Only measurements with a coefficient of variation less than 3% will be taken into account, otherwise the measurements will be repeated.
Measured: through of the study, average 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Aug 2023
- Study start15 Aug 2023 (estimated)
- Primary completion16 Aug 2023 (estimated)
- Study completion30 Dec 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for HemophiliaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Hasan Kalyoncu University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Tuğba GÖNEN, Hasan Kalyoncu University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05981313
- Sponsor's protocol ID
- 2023/52
- Status last verified
- Jul 2023
- First submitted
- 16 Jul 2023
- Last updated
- 8 Aug 2023
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Srivastava A, Santagostino E, Dougall A, Kitchen S, Sutherland M, Pipe SW, Carcao M, Mahlangu J, Ragni MV, Windyga J, Llinas A, Goddard NJ, Mohan R, Poonnoose PM, Feldman BM, Lewis SZ, van den Berg HM, Pierce GF; WFH Guidelines for the Management of Hemophilia panelists and co-authors. WFH Guidelines for the Management of Hemophilia, 3rd edition. Haemophilia. 2020 Aug;26 Suppl 6:1-158. doi: 10.1111/hae.14046. Epub 2020 Aug 3. No abstract available.
PubMed 32744769Schafer GS, Valderramas S, Gomes AR, Budib MB, Wolff AL, Ramos AA. Physical exercise, pain and musculoskeletal function in patients with haemophilia: a systematic review. Haemophilia. 2016 May;22(3):e119-29. doi: 10.1111/hae.12909. Epub 2016 Apr 14.
PubMed 27075748De la Corte-Rodriguez H, Rodriguez-Merchan EC. The role of physical medicine and rehabilitation in haemophiliac patients. Blood Coagul Fibrinolysis. 2013 Jan;24(1):1-9. doi: 10.1097/MBC.0b013e32835a72f3.
PubMed 23103725Usgu S, Ramazanoglu E, Yakut Y. The Relation of Body Mass Index to Muscular Viscoelastic Properties in Normal and Overweight Individuals. Medicina (Kaunas). 2021 Sep 26;57(10):1022. doi: 10.3390/medicina57101022.
PubMed 34684059
Study at a glance
From the registry record, last updated by the sponsor on 8 Aug 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Viscoelastic Properties of Lower Extremity Muscles in Patients With Hemophilia
- ClinicalTrials.gov ID
- NCT05981313
- Acronym / sponsor ID
- 2023/52
- Conditions
- Hemophilia, Hemophilia A, Hemophilia B
- Keywords
- Hemophilia, Muscle tone, Stiffness, Elasticity
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Hasan Kalyoncu UniversityUniversity, hospital or other
- Study start
- 15 Aug 2023 (estimated)
- Primary completion
- 16 Aug 2023 (estimated)
- Study completion
- 30 Dec 2023 (estimated)
- First posted
- 8 Aug 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of our study is to evaluate the viscoelastic properties of lower extremity muscles in patients with hemophilia A and hemophilia B secondarily to compare them with their healthy peers.
Detailed description
Hemophilia is a rare inherited coagulation disorder that develops as a result of factor VIII (hemophilia A) or factor IX (hemophilia B) deficiency, and is a chronic group of diseases that mainly manifests with intra-articular (hemarthrosis) and intramuscular (hematoma) bleeding, affecting quality of life. The presence of easy ecchymosis formation in early childhood, especially intra-articular and intramuscular spontaneous bleeding, interventions and a history of bleeding that lasted longer than expected after trauma should suggest hemophilia. The severity of bleeding findings is directly related to the degree of deficiency of hemophilia A and B. Hemarthroses due to bleeding in the joint (80%) and hematomas due to intramuscular bleeding (20%) cause joint degeneration and muscle atrophy. The joint in which hemarthrosis is most common is the knee joint, however, bleeding into the lower extremity muscles seriously affects the activities of daily living and lower extremity functionality. For this reason, the researchers aimed to evaluate the viscoelastic properties of lower extremity muscles in hemophilia patients and, secondarily, to compare them with their healthy peers.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Hemophilia Group | – | –The viscoelastic properties (tone, stiffness, elasticity) of the lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) of hemophilia patients who meet the study criteria will be evaluated with the MyotonPro device (Myoton Ltd). |
| Control Group | – | –The viscoelastic properties (tone, stiffness, elasticity) of the lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) of healthy children meeting the study criteria will be evaluated with the MyotonPro device (Myoton Ltd). |
Who may qualify
- Ages
- 4 to 17 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Child
- Study population
- Pediatric group hemophilia A and hemophilia B children living in Gaziantep constitute the study population.
Key inclusion criteria (4 listed)
- Children aged 4-17 years
- Those who have been diagnosed with Hemophilia A and Hemophilia B by a physician
- No history of acute bleeding
- Children who have family consent and volunteer to participate in the study
Key exclusion criteria (4 listed)
- Those with a history of lower extremity surgery
- Those with neurological disease
- Those with a history of lower extremity hemarthrosis or hematoma in the last 1 month
- Patients with inhibitor positive
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Lower extremity moscle tone (Hz)
Time frame: through of the study, average 6 months
The tone (Hz) of lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) will be evaluated with MyotonPro device (Myoton Ltd). Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis and Tibialis Anterior muscle measurements will be made from the reference points determined in the supine relaxed position, while Biceps Femoris and Gastrocnemius measurements will be made in the prone position with the ankle in the neutral position. Participants will be allowed to rest on the table for 10 minutes before the measurements are taken. The viscoelastic measurement will be repeated three times by determining the reference points (cm) of the relevant muscles and the averages will be recorded. Only measurements with a coefficient of variation less than 3% will be taken into account, otherwise the measurements will be repeated.
Lower extremity stiffness (N/m)
Time frame: through of the study, average 6 months
The stiffness (N/m) of lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) will be evaluated with MyotonPro device (Myoton Ltd). Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis and Tibialis Anterior muscle measurements will be made from the reference points determined in the supine relaxed position, while Biceps Femoris and Gastrocnemius measurements will be made in the prone position with the ankle in the neutral position. Participants will be allowed to rest on the table for 10 minutes before the measurements are taken. The viscoelastic measurement will be repeated three times by determining the reference points (cm) of the respective muscles and the averages will be recorded. Only measurements with a coefficient of variation less than 3% will be taken into account, otherwise the measurements will be repeated.
Lower extremity elasticity (log)
Time frame: through of the study, average 6 months
The elasticity (log) of lower extremity muscles (Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis, Biceps Femoris, Tibialis Anterior, Gastrocnemius) will be evaluated with MyotonPro device (Myoton Ltd). Vastus Medialis Obliquus, Rectus Femoris, Vastus Lateralis and Tibialis Anterior muscle measurements will be made from the reference points determined in the supine relaxed position, while Biceps Femoris and Gastrocnemius measurements will be made in the prone position with the ankle in the neutral position. Participants will be allowed to rest on the table for 10 minutes before the measurements are taken. The viscoelastic measurement will be repeated three times by determining the reference points (cm) of the respective muscles and the averages will be recorded. Only measurements with a coefficient of variation less than 3% will be taken into account, otherwise the measurements will be repeated.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Aug 2023.
- Background: PubMed 32744769Srivastava A, Santagostino E, Dougall A, Kitchen S, Sutherland M, Pipe SW, Carcao M, Mahlangu J, Ragni MV, Windyga J, Llinas A, Goddard NJ, Mohan R, Poonnoose PM, Feldman BM, Lewis SZ, van den Berg HM, Pierce GF; WFH Guidelines for the Management of Hemophilia panelists and co-authors. WFH Guidelines for the Management of Hemophilia, 3rd edition. Haemophilia. 2020 Aug;26 Suppl 6:1-158. doi: 10.1111/hae.14046. Epub 2020 Aug 3. No abstract available.
- Background: PubMed 27075748Schafer GS, Valderramas S, Gomes AR, Budib MB, Wolff AL, Ramos AA. Physical exercise, pain and musculoskeletal function in patients with haemophilia: a systematic review. Haemophilia. 2016 May;22(3):e119-29. doi: 10.1111/hae.12909. Epub 2016 Apr 14.
- Background: PubMed 23103725De la Corte-Rodriguez H, Rodriguez-Merchan EC. The role of physical medicine and rehabilitation in haemophiliac patients. Blood Coagul Fibrinolysis. 2013 Jan;24(1):1-9. doi: 10.1097/MBC.0b013e32835a72f3.
- Background: PubMed 34684059Usgu S, Ramazanoglu E, Yakut Y. The Relation of Body Mass Index to Muscular Viscoelastic Properties in Normal and Overweight Individuals. Medicina (Kaunas). 2021 Sep 26;57(10):1022. doi: 10.3390/medicina57101022.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Hemophilia and Hemophilia A, run by Hasan Kalyoncu University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 8 Aug 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Tuğba GÖNEN, Asst. Prof. (05050905846, tugba.badat@hku.edu.tr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Lower extremity moscle tone (Hz) (time frame: through of the study, average 6 months). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05981313, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Aug 2023.