The study of the relationship between physical development and cardiorespiratory fitness in male children and adolescents aged 9-17 years

Abstract

The aim of the study is to identify the orientation and degree of interrelationships between the indicators of physical development and cardiorespiratory endurance of male children aged 9-17 years. The anthropometric profile of the study participants was assessed by the following indicators characterizing the physical development of children and adolescents: height, weight, waist circumference, body fat percentage at two points on the body (in the triceps and subcapular region), body mass index and waist-to-height ratio. Cardiorespiratory endurance was assessed by us based on the results of the "20 m progressive shuttle run" test. As a result of the study, we did not receive unambiguous confirmation of the relationship between indicators of physical development and cardiorespiratory endurance. We found this dependence only in the age periods from 9 to 12 years, as well as from 16 to 17 years. In these age groups, physical development indicators such as weight, BMI, waist circumference, waist-to-height ratio, and body fat negatively correlated with the results of the progressive 20 m shuttle run, such as the number of stages, number of shuttles, distance traveled, total running time, and VO₂ max.