Discrepancy in the results of the assessment of body component composition measured in the same individuals by different methods

Aim: compare the indicators of body component composition obtained using «smart scales» with the values calculated using standard formulas based on anthropometry data.

Materials and methods: 60 people (37 girls, 23 boys) were examined. The data obtained on measurements of skin fold thickness, girths and diameters, as well as information on body composition obtained using two «smart scale» models, were tabulated and further processed.

Results: when measuring body composition using two «smart scales» models and anthropometric formulas, male participants showed statistically significant differences in muscle mass (formulas — 46.67 % ± 1.06 %, OCOC — 38.80 % ± 1.46 %, PICOOC — 40.13 % ± 1.6 %; p<0.01), bone mass (formulas — 12.3 % ± 0.4 %, OKOK — 4.3 % ± 0.1 %, PICOOC — 4.37 % ± 0.13 %; p < 0.01), fat mass (formulas — 12.47 % ± 0.68 %, OKOK — 25.41 % ± 1.76 %, PICOOC — 23.17 % ± 1.74 %; p < 0.01) and the rate of basic metabolism (formulas — 1948.7 ± 48.5 kcal, OCOC — 1675.5 ± 50.8 kcal, PICOOC — 1718.2 ± 47.6 kcal; p < 0.01). There were also found significant differences in muscle mass (formulas — 50.36 % ± 0.66 %, OKOK — 39.51 % ± 1.17 %, PICOOC — 39.86 % ± 1.38 %; p < 0.01), bone mass (formulas — 9.4 % ± 0.18 %, OKOK — 5.11 % ± 0.07 %, PICOOC — 4.72 ± 0.07 %; p < 0.01) and fat mass (formulas — 15.86 ± 0.51 %, OCOC — 24.99 ± 0.99 %, PICOOC — 23.16 ± 0.89 %; p < 0.01) in women, however no statistically significant differences in the rate of basic metabolism were found (p > 0.05). There are also discrepancies in the bone mass indices of women obtained from different weight models (OCOC — 5.11 % ± 0.07 %, PICOOC — 4.72 ± 0.07 %; p < 0.05).

Conclusion: the discrepancies obtained indicate the need for further research to determine the accuracy of the methods used. Despite the availability of «smart scales» and anthropometric formulas for determining the component composition of a body, it is worthwhile combining several methods for determining the component composition of a body in order to eliminate a systematic error.

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