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Tracking Muscle Changes in People Having Weight-Loss Surgery

Follows muscle size and strength in adults with obesity after bariatric surgery.

Key facts

Who runs it
Hatice Zehra FERHATLAR
Where
Istanbul, TürkiyeSee the site
Trial code
Registry title
Sarcopenia Indicators After Bariatric Surgery
Status
Recruiting
People taking part
80 people, planned
Started
10 Apr 2026
Expected to end
30 Jun 2027
Type of study
Observational
Record updated
21 July 2026

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for adults who are scheduled to have bariatric (weight-loss) surgery and can do physical performance tests. Their muscle size and strength are checked before and after surgery.

Age
18 to 65 years
Sex
All sexes can join.
Disease stage
People scheduled to undergo bariatric surgery.

Main reasons for not taking part

  • Nerve or muscle-and-bone disorders that affect muscle strength or physical performance
  • Severe heart or lung disease that limits physical activity
  • Active cancer
  • Pregnancy
  • Cannot complete the study assessments

The registry criteria, word for word

Show all 10 criteriaShow less

Who can take part

  • 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 take part

  • 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

Check if you might fit

Answer for yourself. This is not a decision: only the study team can say whether you can take part.

  • Are you between 18 and 65 years old?

Where in Türkiye

  • Kanuni Sultan Suleyman Education and Research HospitalIstanbul, TürkiyeContact: Hatice Zehra FERHATLARTaking people

About the trial

What the trial wants to find out

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.

Read full original descriptionShow less

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.

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
Longitudinal Evaluation Of Sarkopenia-Related Parameters After Bariatric Surgery
Plain-language title
Tracking Muscle Changes in People Having Weight-Loss SurgeryGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 13 November 2026.
Fit questions
Built from NCT07717333, who can take part
Record updated
21 July 2026