Gender differences in the body composition of primary school children in the city of Gomel

Objective. Сompare gender differences in the component composition of the body of primary school children aged 7-10 years.

Materials and methods. 96 schoolchildren aged 7-10 years (46 boys and 50 girls) were examined at the gymnasium No. 56 in Gomel. Body composition indicators were determined in pipils using bioimpedance research: body mass index (BMI), fat mass (kg), proportion of fat mass (%), lean mass (kg), cell mass (kg), proportion of cell mass (%), musculoskeletal mass (kg), proportion of skeletalmuscle mass (%), total fluid (kg), extracellular fluid (kg), intracellular fluid (kg), basal metabolism (kcal/day).

Results. As a result of the study, it was found that 7-year-old boys showed a decrease in BMI compared to the norm (p<0.05), while girls had no significant differences. The body mass index in 8-year-old girls was below normal values and significantly lower compared to boys (p<0.01). In boys of all studied groups, compared with girls, the studied indicators were significantly higher (p<0.01). In 10-year-old pupils, in contrast to children of other study groups, gender differences were observed in the value of basal metabolic rate: which was significantly higher in boys by 16% (p=0.02).

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