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- W2023008808 abstract "INTRODUCTION: Peak oxygen uptake (VO2peak) corrected by body mass may be underestimated in obese children, and the use of allometry may attenuate such problem. PURPOSE: To evaluate the alometric way to correct VO2peak in obese (OB) and lean (LB) boys. METHODS: Thirty physically active pre-pubescent boys (age 9.2 ± 1.1 years) were classified as OB (n=15) and LB (n=15) according to their body mass indexes (CDC, 2000), % body fat (Lohman, 1987) and triceps skinfold (Must, 1991). Peak oxygen uptake was measured in a cycle ergometer (ErgoFit 167) using the McMaster protocol and indirect calorimetry (CPX-D/MGC, USA). Allometric VO2peak was calculated as: LogVO2peak = log a + b log body mass, where a is a proportionality coefficient and b is the allometric expoent. Independent t-test was employed to compare groups and data were analyzed using the SPSS 13.0. RESULTS: The table below shows the results of VO2peak (mean ± SD) expressed in absolute value, relative to body mass, and using the allometric exponent in each group.TABLEThe correlation coefficient (r) between the absolute VO2peak and body mass was 0.692 (p<0.001). The r between relative VO2peak and body mass was -0.691 (p<0.001); while the r between allometric VO2peak and body mass was lower (-0.165, p=0.384). CONCLUSION: VO2peak corrected by body mass overestimated the values in LB by 21%, and underestimated them by 24.3% in OB. This suggests that allometry is an effective way to normalize VO2peak when comparing children of different body masses. Supported by CAPES" @default.
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- W2023008808 date "2010-05-01" @default.
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- W2023008808 title "Use Of Allometry In The Evaluation Of Peak Oxygen Uptake In Obese And Lean Pre-pubescent Boys" @default.
- W2023008808 doi "https://doi.org/10.1249/01.mss.0000386070.48636.89" @default.
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