Journals / Uludağ Üniversitesi Tıp Fakültesi Dergisi / 2026 / Cilt: 52

Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin

Bariatrik Cerrahi Sonrası Kas Gücü Değişiklikleri: Cinsiyet ve Hemoglobin ile İlişkiler

Hatice Gizem Gunhan(Department of Internal Medicine, Marmara University Pendik Training and Research Hospital, Istanbul, Türkiye.)0000-0001-6592-7171
Eren İmre(Department of Endocrinology and Metabolism, Marmara University School of Medicine, Istanbul, Türkiye.)0000-0003-4044-7133
Dilek Yavuz(Department of Endocrinology and Metabolism, Marmara University School of Medicine, Istanbul, Türkiye.)0000-0002-0075-6313
Pages
—
Publication Date
2026-09-24
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Overall muscle strength decreased modestly but significantly.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study aimed to evaluate changes in muscle strength after bariatric surgery and identify factors associated with these changes.
📊
Key Findings & Data:This retrospective cohort study included patients who underwent bariatric surgery between January 2013 and December 2019 and had complete baseline and 12-month clinical, biochemical, and handgrip strength assessments.
💡
Conclusion & Impact:Overall muscle strength decreased modestly but significantly.
🔬Design:Araştırma Makalesi
📍Scope:2013 Verileri
⚙️Variables:Bariatrik Cerrahi · Kas Gücü · El Kavrama Gücü

Abstract

This study aimed to evaluate changes in muscle strength after bariatric surgery and identify factors associated with these changes. This retrospective cohort study included patients who underwent bariatric surgery between January 2013 and December 2019 and had complete baseline and 12-month clinical, biochemical, and handgrip strength assessments. Muscle strength was measured by handgrip dynamometry. Correlation and multivariable linear regression analyses were performed. A total of 147 patients were included. Significant reductions were observed in body weight, body mass index, blood pressure, glycemic parameters, liver enzymes, and triglyceride levels at 12 months (all p<0.05). Overall muscle strength decreased modestly but significantly. Sex-stratified analysis showed a significant decrease in females but an increase in males. In multivariable analysis, hemoglobin change remained independently associated with muscle strength change, whereas surgical technique and weight loss were not. Bariatric surgery improves metabolic health but is accompanied by sex-specific changes in muscle strength, and the independent association with hemoglobin change supports postoperative functional and hematological assessment.

Özet

Bu çalışmanın amacı, bariatrik cerrahi sonrası kas gücündeki değişiklikleri değerlendirmek ve bu değişikliklerle ilişkili faktörleri belirlemektir. Bu retrospektif kohort çalışmasına, Ocak 2013-Aralık 2019 tarihleri arasında bariatrik cerrahi uygulanmış ve başlangıç ile ameliyat sonrası 12. ay klinik, biyokimyasal ve el kavrama gücü değerlendirmeleri tam olan hastalar dahil edildi. Kas gücü el kavrama dinamometresi ile ölçüldü. Korelasyon ve çok değişkenli doğrusal regresyon analizleri yapıldı. Çalışmaya 147 hasta dahil edildi. On ikinci ayda vücut ağırlığı, beden kütle indeksi, kan basıncı, glisemik parametreler, karaciğer enzimleri ve trigliserid düzeylerinde anlamlı azalma saptandı (tümü p<0,05). Toplam kas gücü hafif ancak anlamlı düzeyde azaldı. Cinsiyete göre analizde kadınlarda kas gücü azalırken erkeklerde arttı. Çok değişkenli analizde hemoglobin değişimi kas gücü değişimi ile bağımsız olarak ilişkili bulundu; cerrahi yöntem ve kilo kaybı anlamlı değildi. Bariatrik cerrahi metabolik iyileşme sağlamakla birlikte kas gücünde cinsiyete özgü değişikliklerle ilişkilidir ve hemoglobin değişimiyle bağımsız ilişki ameliyat sonrası fonksiyonel ve hematolojik değerlendirmenin önemini desteklemektedir.

🔖

Cite This Article

Gunhan, H. G., İmre, E., Yavuz, D., *, H. G. G. (2026). Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin. Uludağ Üniversitesi Tıp Fakültesi Dergisi, Cilt: 52. https://doi.org/10.32708/uutfd.1999406

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (11)

  1. Yumuk V, Tsigos C, Fried M, et al. European guidelines forobesity management in adults. Obes Facts. 2015;8(6):402-424. doi:10.1159/000442721
  2. Donini LM, Busetto L, Bischoff SC, et al. Definition anddiagnostic criteria for sarcopenic obesity: ESPEN and EASOconsensus statement. Clin Nutr. 2022;41(4):990-1000. doi:10.1016/j.clnu.2021.11.014
  3. Buchwald H, Avidor Y, Braunwald E, et al. Bariatric surgery: asystematic review and meta-analysis. JAMA.2004;292(14):1724-1737. doi:10.1001/jama.292.14.1724
  4. Jung HN, Kim SO, Jung CH, et al. Preserved muscle strengthdespite muscle mass loss after bariatric metabolic surgery: asystematic review and meta-analysis. Obes Surg.2023;33(11):3422-3430. doi:10.1007/s11695-023-06796-9
  5. Cruz-Jentoft AJ, Bahat G, Bauer J, et al. Sarcopenia: revisedEuropean consensus on definition and diagnosis. Age Ageing.2019;48(1):16-31. doi:10.1093/ageing/afy169
  6. Ibacache-Saavedra P, Martínez-Rosales E, Jerez-Mayorga D, etal. Effects of bariatric surgery on muscle strength and quality: asystematic review and meta-analysis. Obes Rev.2024;25(9):e13790. doi:10.1111/obr.13790
  7. Molino S, Dossena M, Buonocore D, Verri M. Sarcopenicobesity: an appraisal of the current status of knowledge andmanagement in elderly people. J Nutr Health Aging.2016;20(7):780-788. doi:10.1007/s12603-015-0631-8
  8. Liu Q, You J, Zhong M, et al. Hemoglobin level is negatively associated with sarcopenia and its components in Chinese aged60 and above. Front Public Health. 2023;11:1081843. doi:10.3389/fpubh.2023.1081843
  9. Beaudart C, McCloskey E, Bruyère O, et al. Sarcopenia in daily practice: assessment and management. BMC Geriatr.2016;16(1):170. doi:10.1186/s12877-016-0349-4
  10. Villareal DT, Aguirre L, Gurney AB, et al. Aerobic orresistance exercise, or both, in dieting obese older adults. NEngl J Med. 2017;376(20):1943-1955. doi:10.1056/NEJMoa1616338
  11. Vieira FT, de Oliveira GS, Gonçalves VSS, et al. Effect ofphysical exercise on muscle strength in adults followingbariatric surgery: a systematic review and meta-analysis ofdifferent muscle strength assessment tests. PLoS One.2022;17(6):e0269699. doi:10.1371/journal.pone.0269699