ObesityNCT07717333
Sarcopenia Indicators After Bariatric Surgery
An observational study of Obesity and Sarcopenia, run by Hatice Zehra FERHATLAR at 1 site in Turkey (Türkiye).
Trial summary
This prospective observational study aims to evaluate longitudinal changes in sarcopenia-related parameters in patients undergoing bariatric surgery. Obesity and rapid weight loss following bariatric surgery may lead to changes in muscle mass, muscle strength, and physical performance, which are important components… Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Obesity, Sarcopenia, Bariatric Surgery
- How many people
- 80 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 10 Apr 2026to 30 Jun 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Adult patients scheduled to undergo bariatric surgery at the study center will be included in this prospective observational study. Participants will be evaluated before surgery and during postoperative follow-up visits to assess longitudinal changes in muscle thickness, muscle strength, and physical performance related to sarcopenia.
Who may be able to join
- Adults aged 18 years and older
- Patients scheduled to undergo bariatric surgery
- Ability to participate in physical performance tests
- Ability to provide written informed consent
Who cannot join
- Presence of neurological or musculoskeletal disorders affecting muscle strength or physical performance
- Severe cardiopulmonary disease limiting physical activity
- Active malignancy
- Pregnancy
- Inability to complete study assessments
- Refusal to participate in the study
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Kanuni Sultan Suleyman Education and Research Hospital
Istanbul, KÜÇÜKÇEKMECE, 34307
Hatice Zehra FERHATLAR, 05367387869, haticezehraferhatlar@gmail.com
About this study
Official title: Longitudinal Evaluation Of Sarkopenia-Related Parameters After Bariatric Surgery
This prospective observational study aims to evaluate longitudinal changes in sarcopenia-related parameters in patients undergoing bariatric surgery. Obesity and rapid weight loss following bariatric surgery may lead to changes in muscle mass, muscle strength, and physical performance, which are important components of sarcopenia.
Participants will be evaluated before bariatric surgery and during postoperative follow-up visits. Muscle thickness will be assessed using ultrasonography of the femoral muscles. Muscle strength and physical performance will be evaluated using handgrip strength, the 5-meter walk test, and the five-times sit-to-stand test.
The study aims to investigate the effects of bariatric surgery on muscle function and physical performance over time and to contribute to the early identification of sarcopenia risk in this patient population.
- Conditions
- Obesity, Sarcopenia, Bariatric Surgery
- Medical subject headings
- Obesity, Sarcopenia
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Femoral Muscle Thickness
Femoral muscle thickness will be assessed using ultrasonography before bariatric surgery and during postoperative follow-up visits to evaluate longitudinal changes associated with sarcopenia.
Measured: Preoperative baseline, postoperative 1st month, 3rd month, 6th month, and 12th month assessments
Secondary outcomes (2)
Change in Handgrip Strength
Handgrip strength will be evaluated before bariatric surgery and during postoperative follow-up visits to assess changes in muscle strength.
Measured: Preoperative baseline, postoperative 1st month, 3rd month, 6th month, and 12th month assessments
Change in Five-Times Sit-to-Stand Test Performance
Functional lower extremity performance will be evaluated using the five-times sit-to-stand test before bariatric surgery and during postoperative follow-up visits.
Measured: Preoperative baseline, postoperative 1st month, 3rd month, 6th month, and 12th month assessments
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Jul 2026
- Study start10 Apr 2026
- Primary completion30 May 2027 (estimated)
- Study completion30 Jun 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for ObesityStudies 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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 80 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Hatice Zehra FERHATLAR
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Hatice Zehra FERHATLAR, Kanuni Sultan Suleyman Training and Research Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07717333
- Sponsor's protocol ID
- BS-SARC-2026
- Status last verified
- Jul 2026
- First submitted
- 24 May 2026
- Last updated
- 21 Jul 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Individual participant data will not be publicly shared in order to protect participant confidentiality and privacy. De-identified data may be available from the investigators upon reasonable request.
Study at a glance
From the registry record, last updated by the sponsor on 21 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Longitudinal Evaluation Of Sarkopenia-Related Parameters After Bariatric Surgery
- ClinicalTrials.gov ID
- NCT07717333
- Acronym / sponsor ID
- BS-SARC-2026
- Conditions
- Obesity, Sarcopenia, Bariatric Surgery
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 80 participants (estimated)
- Lead sponsor
- Hatice Zehra FERHATLARUniversity, hospital or other
- Study start
- 10 Apr 2026 (actual)
- Primary completion
- 30 May 2027 (estimated)
- Study completion
- 30 Jun 2027 (estimated)
- First posted
- 21 Jul 2026 (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.
This prospective observational study aims to evaluate longitudinal changes in sarcopenia-related parameters in patients undergoing bariatric surgery. Obesity and rapid weight loss following bariatric surgery may lead to changes in muscle mass, muscle strength, and physical performance, which are important components of sarcopenia.
Participants will be evaluated before bariatric surgery and during postoperative follow-up visits. Muscle thickness will be assessed using ultrasonography of the femoral muscles. Muscle strength and physical performance will be evaluated using handgrip strength, the 5-meter walk test, and the five-times sit-to-stand test.
The study aims to investigate the effects of bariatric surgery on muscle function and physical performance over time and to contribute to the early identification of sarcopenia risk in this patient population.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Adult patients scheduled to undergo bariatric surgery at the study center will be included in this prospective observational study. Participants will be evaluated before surgery and during postoperative follow-up visits to assess longitudinal changes in muscle thickness, muscle strength, and physical performance related to sarcopenia.
Key inclusion criteria (4 listed)
- Adults aged 18 years and older
- Patients scheduled to undergo bariatric surgery
- Ability to participate in physical performance tests
- Ability to provide written informed consent
Key exclusion criteria (6 listed)
- Presence of neurological or musculoskeletal disorders affecting muscle strength or physical performance
- Severe cardiopulmonary disease limiting physical activity
- Active malignancy
- Pregnancy
- Inability to complete study assessments
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
Change in Femoral Muscle Thickness
Time frame: Preoperative baseline, postoperative 1st month, 3rd month, 6th month, and 12th month assessments
Femoral muscle thickness will be assessed using ultrasonography before bariatric surgery and during postoperative follow-up visits to evaluate longitudinal changes associated with sarcopenia.
2 secondary outcomes
Change in Handgrip Strength
Time frame: Preoperative baseline, postoperative 1st month, 3rd month, 6th month, and 12th month assessments
Change in Five-Times Sit-to-Stand Test Performance
Time frame: Preoperative baseline, postoperative 1st month, 3rd month, 6th month, and 12th month assessments
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Jul 2026.
- Individual participant dataSharing planned: No. Individual participant data will not be publicly shared in order to protect participant confidentiality and privacy. De-identified data may be available from the investigators upon reasonable request.
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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.
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 Obesity and Sarcopenia, run by Hatice Zehra FERHATLAR 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 6 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: looking for participants now, as of the sponsor's last update on 21 Jul 2026. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Hatice Z FERHATLAR (+905367387869, haticezehraferhatlar@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Femoral Muscle Thickness (time frame: Preoperative baseline, postoperative 1st month, 3rd month, 6th month, and 12th month assessments). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 21 Jul 2026.