Abstract
Aim. The purpose of the study is to identify typological features of energy supply of muscle activity in 9–10 year-old children by means of cluster analysis. Materials and methods. The study involved apparently healthy girls (n = 201) and boys (n = 176) ages 9–10 years. A set of indicators of energy supply, physical performance, physical fitness and physical development was used for the study, as well as body types were determined. Results. Analysis of differences between groups showed that 9–10 year-old boys demonstrated higher values (p < 0.05–0.001) of energy supply and physical performance than girls. Four options for energy metabolism were revealed characterized by typical combinations of aerobic, anaerobic glycolytic and anaerobic alactate capabilities with physical performance, physical fitness and physical development. It was found that among children with aerobic metabolism, children with high endurance and leptosomic type were often found. Children with anaerobic metabolism were often characterized by high speed, strength, speed and strength abilities and eurysomic type. Conclusion. The selected options of energy supply must be taken into account in physical education, health and sports training for 9–10 year-old children.
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