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Medicina dello Sport 2019 March;72(1):103-11

DOI: 10.23736/S0025-7826.18.03412-9

Copyright © 2018 EDIZIONI MINERVA MEDICA

language: English, Italian

Associations among body mass index, circumferences measures, and cardiovascular fitness in adolescents

Peng ZHANG , You FU

1 College of Health Sciences, East Stroudsburg University of Pennsylvania, East Stroudsburg, PA, USA; 2 School of Community Health Sciences, University of Nevada Reno, Reno, NV, USA


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BACKGROUND: The purpose of this study was to evaluate the relationships of BMI, waist circumference (WC), hip circumference (HC), and waist-to-hip ratio (WHR), waist-to-height ratio (WtHR) and cardiovascular fitness among high school students.
METHODS: Sixty-nine high school students (44 boys and 25 girls; mean age 16.4 years) completed the study in spring of 2018. BMI was calculated by measured height in meter divided by weight in kilogram squared. WC and HC were respectively measured at the level of the umbilicus with the subject in midexpiratory position and the widest point over the greater trochanters to the nearest 0.5 cm by using non-elastic tape. WHR and WtHR was conducted by using weight circumference divided by hip circumference and by height. The outcome variable was Rockport One Mile Walk Test indicating cardiovascular fitness levels. Pearson’s product-moment correlation coefficient were actuated to determine the extent and direction of the relationships among all the measures. Multiple regression analysis was performed to estimate the significance of selected predictors on participant’s cardiovascular fitness.
RESULTS: In linear regression analyses there were statistically significant associations between BMI (r=-0.49), WC (r=-0.47), HC (r=-0.48), and WtHR (r=-0.53) with cardiorespiratory endurance levels (P<0.001). Among the four measures, WtHR demonstrated a slightly higher partial correlation than the circumference measures with cardiorespiratory endurance. Using multiple linear ridge regression, WtHR (β=-176.04, P=0.002, 95% CI: -287.34, -64.83).
CONCLUSIONS: Our results indicate that circumference measures were significant correlates of cardiovascular fitness as BMI was for youth. This finding is in accordance with previous studies in adult populations indicating BMI and WC having a similar level of accuracy on predicting cardiovascular risk factors.


KEY WORDS: Physical fitness - Body composition - Waist-height ratio - Adolescent

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