Canonical correlations between somatic features and postural stability in children aged 10–12 years

Introduction
The analysis of somatic features is an important part of health assessment. Body mass, height, and the size of the support surface are determinants of static mechanical stability

Aim of the research
To analyse canonical correlations between somatic features and postural stability in children aged 10–12 years.

Material and methods
The study included 301 children aged 10–12 years. Body composition was assessed using the method of bioelectrical impedance analysis, which consists of the evaluation of resistance to the flow of an electric current. Postural stability was evaluated using the Biodex Balance System platform. Postural stability testing was performed with both feet positioned on a stable surface, with open eyes.

Results and conclusions
Measurements of somatic traits and body composition, which were compared to norms, showed that the majority of subjects had normal somatic features and body composition. All children during the postural stability test were in research Zone A, and most of them tended to lean to the right and left back (Quadrant III, IV). There were significant correlations between somatic variables and postural stability. On the somatic variables side, the largest share was in body height and muscle mass (%), and the highest shares in the postural stability variables were the total stability index, the percentage of time spent in Quadrant III, and the percentage of time spent in Quadrant IV. Body height and muscle mass (%) were most strongly correlated with variable postural stability.