The relationship between physical development and cardiorespiratory fitness in girls of Kazakhstan aged 10-13 years

А. Аликей, Svetlana Otaraly, Aigul Saliyeva, Lyaila Serikkyzy Tungyshmuratova, Iossif Andruchshishin

2025

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DOI 10.48114/2306-5540_2025_4_61
Data confidence 70 medium
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Abstract

The aim of this study is to identify the relationship between indicators of physical development and cardiorespiratory fitness in female children of Kazakhstan aged 10-13 years (n=236). Physical development of children was assessed using indicators of height, weight, waist circumference, body fat percentage, as well as such integral indicators as body mass index and waist-to-height ratio. Cardiorespiratory fitness was assessed by the results of the “progressive 20 m shuttle run” test. The results of the study showed that there is a negative weak and moderate range correlation between the indicators characterizing the body mass index, waist circumference, waist-to-height ratio, body fat percentage and cardiorespiratory readiness of Kazakhstani children. The relationship between body fat percentage indicators and other indicators of physical development was also revealed. This fact suggests that in the absence of the possibility of using caliperometry, it is possible to use indicators of the ratio of body mass index, waist circumference, waist-to-height to determine the prevalence of overweight and obesity in the population of children.