Objective Chronic kidney disease (CKD) patients and renal transplant recipients (RTRs) are characterized by aberrant body composition such as muscle wasting and obesity. It is still unknown which is the most accurate method to estimate body composition in CKD. We investigated the validity of the Hume equation and bioelectrical impedance analysis (BIA) as an estimate of body composition against dual-energy X-ray absorptiometry (DXA) in a cohort of nondialysis dependent (NDD)-CKD and RTRs. Design and methods This was a cross …

Bioelectrical impedancemetry (BIA) has been used to evaluate hematocrit and red cell aggregability in vitro but whole body impedance measurements are also correlated to some hemorheologic factors, suggesting a relationship between viscosity factors and electric properties of blood. We repeatedly reported correlations with whole body BIA and hematocrit, whole blood viscosity and plasma viscosity, red cell rigidity and RBC aggregation. The SBIA Inbody 770 modelizes body as 5 cylinders and measures impedance …

Background Malnutrition is a consistent finding in hemodialysis (HD) patients and is associated with high mortality. The aim was to compare nutrition status indicators using dual‐energy x‐ray absorptiometry (DXA) as reference in HD patients. Methods Observational cross‐sectional study with 42 patients, 55.8 years (±14.6) old, 60% male, HD 2–3 times per week for≥ 3 months. HD ranged from 3 months to 28 years (median, 17.3; interquartile range, 8.73–39.0). We used body mass index (BMI) and fat mass (FM) by skinfold thickness …

Abstract Background The 4-component (4C) model is a criterion method for human body composition that separates the body into fat, water, mineral, and protein, but requires 4 measurements with significant cost and time requirements that preclude wide clinical use. A simplified model integrating only 2 measurements—dual-energy X-ray absorptiometry (DXA) and bioelectrical impedance analysis (BIA)—and 10 min of patient time has been proposed. Objective We aimed to validate a rapid, simplified 4C DXA+ BIA body composition model in …

BACKGROUND: Changes in the difference between bioimpedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) body composition measurements according to edema is an important issue for peritoneal dialysis (PD) patients. METHODS: We reviewed the medical records of patients to identify all adults who had undergone PD and composition measurements by both BIA and DXA techniques. The aim of this study was to evaluate any change in the difference between BIA and DXA body composition measurements according …

Background: It is routinely recommended that patients with pacemakers, implantable cardioverter defibrillators (ICD), and cardiac resynchronization therapy‐defibrillators (CRT‐D) avoid bioelectrical impedance analysis (BIA)—a commonly used method to estimate body composition—because of the concern for the potential for BIA interference with pacemaker or ICD function. However, the prevalence of such interference is not known. Objective: Assess for incidence of interference between BIA and ICD or CRT‐D devices …

Bioelectrical impedance analysis (BIA) is a common practice to assess body composition in athletes, however, when measuring athletes with specific body geometry, its accuracy may decrease. In this study we examined how length dimensions affect body composition estimation and we compared BIA and dual-energy X-ray absorptiometry (DXA) assessments in three sports. 738 male adolescent athletes (15.8±1.4 years) from three sports (soccer, basketball, and handball) were measured. Body composition was estimated by BIA (InBody …

Background The utilisation of bioelectrical impedance analysis (BIA) in heart failure can be affected by many factors and its applicability remains controversial. The present study aimed to verify the adequacy of single‐frequency BIA (SF‐BIA) and multifrequency BIA (MF‐BIA) compared to dual‐energy x‐ray absorptiometry (DEXA) for evaluating body composition in outpatients with heart failure. Methods In this cross‐sectional study, 55 patients with stable heart failure and left ventricle ejection fraction≤ 45% were evaluated for fat mass …

Background Bioelectric impedance analysis (BIA) is commonly used in research to assess body composition. However, studies that validate the accuracy of BIA exclusively in post‐menopausal women are lacking. The main purpose of the present study was to evaluate the agreement of multi‐frequency (MF)‐BIA and single‐frequency (SF)‐BIA with dual‐energy X‐ray absorptiometry (DXA) in the estimation of fat mass (FM) and fat‐free mass (FFM) among post‐menopausal women with variation in body mass index (BMI) and physical activity (PA) …

Sarcopenia has been associated with several conditions relevant to obstructive sleep apnea (OSA), such as aging and obesity, but a direct relationship between OSA and skeletal muscle alterations has not been identified. This study investigated associations between computed tomography (CT)-measured skeletal muscle indices and OSA severity. Analyzed were 334 patients who underwent polysomnography to diagnose OSA. Lumbar skeletal muscles were assessed with CT for the skeletal muscle mass index (SMI, cross-sectional …