ArticleNutrients2026
Correlation Between Psoas and Diaphragmatic Ultrasound Indices for the Assessment of Sarcopenia in Patients with Inflammatory Bowel Disease: A Prospective Single-Center Study.
Article in Nutrients, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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5 authors.
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Abstract
methodsThis prospective single-center study enrolled 353 IBD patients (Crohn's disease [CD] and ulcerative colitis [UC]). Overall, 57 patients had a SARC-F score ≥ 4 and underwent intestinal ultrasound (US). The transverse diameter of the right IP muscle was measured in triplicate, and the psoas-to-height ratio (PMTH, mm/m) was calculated. Diaphragm thickness was assessed during inspiration and expiration, and the diaphragm-to-height ratio was derived. Pearson correlation, Bland-Altman analysis and multivariable regression (adjusted for age and sex) were performed to test associations.
resultsThe mean IP diameter was 28.40 mm (28.82 mm in males, 27.02 mm in females), with a mean PMTH of 16.62 mm/m. Diaphragm thickness was 20.4 ± 5.0 mm at inspiration and 10.7 ± 3.5 mm at expiration, yielding a mean difference of 9.7 ± 3.4 mm. The diaphragm-to-height ratio was 0.59 ± 0.21 mm/m. Pearson correlation revealed a moderate positive association between PMTH and the diaphragm index (r = 0.3568,
conclusionsMuscle ultrasound is a reliable and reproducible method for evaluating sarcopenia in IBD. The diaphragm, due to its superficial anatomical location and ease of measurement, shows a significant correlation with psoas muscle parameters and may serve as a practical surrogate marker in clinical practice. Larger multicenter studies are warranted to validate these findings.
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