Comparative evaluation of the results of anthropometric indicators and measurements of body composition by bioimpedancemetry

Abstract

Background. Various anthropometric and instrumental methods are used to assess the correspondence between height and body weight of a person.
 Aim. Carrying out a comparative assessment of the results of anthropometric indicators and bioimpedance analysis among men and women fitness center visitors.
 Material and methods. A cross-sectional study of 58 men and 62 women was carried out. Participants underwent standard anthropometry (measurement of height with a stadiometer; body weight with an electronic scale; measurement of waist circumference and hip circumference with a centimeter tape) and bioimpedancemetry. Statistical processing was carried out by non-parametric methods: to study the relationship between the phenomena, the Spearman rank correlation coefficient was used, the differences in the average indicators were calculated by the Student's t-test, relative indicators by the Pearson 2 test, the differences were considered statistically significant at p 0.05.
 Results. Correlation analysis of the main calculated anthropometric and bioimpedance parameters established a strong relationship between body mass index and adipose tissue content (r=0.87). According to the data of bioimpedance analysis in the group of men, there was a significant predominance of muscle mass over fat, both in normal and overweight (p 0.0001). In the course of a comparative assessment of body mass index and bioimpedance analysis indicators, it was found that the use of body mass index is more often associated with overdiagnosis of overweight (p=0.0067). In the group of women, bioimpedancemetry analysis showed the predominance of muscle tissue over adipose tissue only with a normal body mass index, with overweight, the predominance of adipose tissue was found (p 0.0001). According to the results of bioimpedancemetry, the frequency of the norm decreased by 1.5 times compared with the body mass index (p=0.0017), the proportion of obesity increased by 4 times (p=0.0017) and the proportion of overweight almost 1.4 times.
 Conclusion. A comprehensive assessment of the body composition by bioimpedancemetry in men established the predominance of muscle mass over fat, which made it possible to reduce the frequency of overdiagnosis of excess body weight by 2 times; in women, body mass index was associated with underdiagnosis of overweight.