
Abstract
This study investigates anthropometric measures associated with adiposity to forecast cardiorespiratory fitness in Macedonian schoolchildren. The objective was to compare established indices, such as Body Mass Index and Waist-to-Height Ratio, with more contemporary ones, including Relative Fat Mass Pediatric, Tri-Ponderal Mass Index, Waist-to-BMI Ratio, and Grip-to-BMI Ratio. The study was conducted with a sample of 2,197 primary school students, who were grouped according to gender. Data on body weight, height, waist circumference, body fat percentage and cardiorespiratory fitness (assessed by the 20-m shuttle run test), were collected from participants, and regression analyses were carried out to assess the predictive capabilities of the various measures. Results RFMp, Grip-to-BMI Ratio, and BMI were the best CRF predictors. The Grip-to-BMI Ratio was found to be important for males in determining CRF and it was also added into the females category. In boys, BMI and waist circumference were more influential. The conclusion suggests that incorporating new anthropometric indices into clinical practice can enhance the identification of cardiometabolic risk and improve the prevention of health issues in children. These findings support the importance of regular CRF assessments as part of health check-ups.
Keywords: Cardiorespiratory fitness, Anthropometric indices, Adiposity predictors
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