Research Article

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

Volume: 52 September 24, 2026
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Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin

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.

Keywords

References

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Details

Primary Language

English

Subjects

Endocrinology

Journal Section

Research Article

Publication Date

September 24, 2026

Submission Date

July 21, 2026

Acceptance Date

September 2, 2026

Published in Issue

Year 2026 Volume: 52

APA
Gunhan, H. G., İmre, E., & Yavuz, D. (2026). Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin. Journal of Uludağ University Medical Faculty, 52. https://doi.org/10.32708/uutfd.1999406
AMA
1.Gunhan HG, İmre E, Yavuz D. Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin. Journal of Uludağ University Medical Faculty. 2026;52. doi:10.32708/uutfd.1999406
Chicago
Gunhan, Hatice Gizem, Eren İmre, and Dilek Yavuz. 2026. “Muscle Strength Changes After Bariatric Surgery: Associations With Sex and Hemoglobin”. Journal of Uludağ University Medical Faculty 52 (September). https://doi.org/10.32708/uutfd.1999406.
EndNote
Gunhan HG, İmre E, Yavuz D (September 1, 2026) Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin. Journal of Uludağ University Medical Faculty 52
IEEE
[1]H. G. Gunhan, E. İmre, and D. Yavuz, “Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin”, Journal of Uludağ University Medical Faculty, vol. 52, Sept. 2026, doi: 10.32708/uutfd.1999406.
ISNAD
Gunhan, Hatice Gizem - İmre, Eren - Yavuz, Dilek. “Muscle Strength Changes After Bariatric Surgery: Associations With Sex and Hemoglobin”. Journal of Uludağ University Medical Faculty 52 (September 1, 2026). https://doi.org/10.32708/uutfd.1999406.
JAMA
1.Gunhan HG, İmre E, Yavuz D. Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin. Journal of Uludağ University Medical Faculty. 2026;52. doi:10.32708/uutfd.1999406.
MLA
Gunhan, Hatice Gizem, et al. “Muscle Strength Changes After Bariatric Surgery: Associations With Sex and Hemoglobin”. Journal of Uludağ University Medical Faculty, vol. 52, Sept. 2026, doi:10.32708/uutfd.1999406.
Vancouver
1.Hatice Gizem Gunhan, Eren İmre, Dilek Yavuz. Muscle Strength Changes After Bariatric Surgery: Associations with Sex and Hemoglobin. Journal of Uludağ University Medical Faculty. 2026 Sep. 1;52. doi:10.32708/uutfd.1999406

ISSN: 1300-414X, e-ISSN: 2645-9027

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Journal of Uludag University Medical Faculty is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
2023