The capabilities of bioelectrical impedance body composition monitors in determining metabolic parameters during body shaping

Abstract

Body composition is closely related to the metabolic and biological functions of the body. Body composition and metabolic parameters were determined in 48 healthy women without an obesity, which underwent body shaping procedure – liposuction, with a usage of two types of body composition monitors.After liposuction, body weight significantly increased on average by 0.5 - 1.0 kg (p = 0.001). Body weight and body mass index correlated with all metabolic parameters.Body type was automatically calculated by "Tanita BC-542". Determination of body type when using "Tanita BC-601" was done manually. More than half of the patients on admission had a standard body type ("5" type) - 20 (54%), in 15 (41%) "hidden obesity" was found. After liposuction, 4 (14%) women improved their body type.The level of basal metabolic rate (BMR) in patients initially averaged 1340 ± 96 kcal when measured using a two-electrode analyzer, and 2128 ± 81 kcal - using a four-electrode analyzer (p = 0.0001), according to the literature – about 1000-1200 kcal. The average increase in BMR immediately after liposuction was 21 kcal, on the 7th day - 32 kcal.The metabolic age after body contouring became less than the actual one in 10 (56%) patients, by an average of 3.1 years (p = 0.0007).Four-electrode monitor revealed that an average decrease of fat on the abdomen was 5.4%. However, a decrease in its content in the hands and legs (in those zones that remained intact) was also detected. The analyzer also determined an increase in the content of muscles on the abdomen.In general, the bioelectrical impedance measurement in analysis of metabolic parameters in dynamics is simple and accessible, it has also a clinical importance. However, due to the identification of some errors, it requires repeated measurements and further improvement.