The Relationship Among Sarcopenia, Preperitoneal Fat Thickness and Cholecystectomy

"Quadriceps muscle thickness measurement at the midpoint between the anterior superior iliac spine and the upper pole of the patella.~Sarcopenia assessment The quadriceps muscle thickness (mm) was divided by the BMI to get the sonographic thigh adjustment ratio (STAR) values. Grip strength was assessed using an electronic hand dynamometer on the dominant hand side. Three measurements were obtained from the dominant hand and the maximum value was taken for the analyses. Participants in the chair stand test (CST) were instructed to rapidly rise and fall from a chair five times while keeping their arms folded across their chests. The test was repeated three times, and the mean time was recorded. Together with low STAR values (\<1.0 for females and \<1.4 for males), having low grip strength (\<19 kg for females or \<32 kg for males) and/or prolonged CST duration (≥12 seconds) were used to diagnose sarcopenia"

Intraabdominal visceral adipose tissue thickness was calculated by placing the probe 2-cm proximal to the midline of the umbilicus with minimal pressure and measuring the distance from the inner surface of the linea alba to the anterior wall of the abdominal aorta. Subcutaneous maximum fat thickness was measured from the distance between the subcutaneous tissue and the linea alba from the same point. Preperitoneal fat thickness was measured from the distal neighborhood of the xiphoid process, 1.5 cm to the right side of the widest distance between the parietal peritoneum and the linea alba. Minimum subcutaneous fat thickness was calculated as the distance measured from the distal neighborhood of the xiphoid process, measured as the shortest distance between the outer part of the linea alba and the subcutaneous fat tissue.