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Comparison of different VO2max equations in the ability to discriminate the metabolic risk in Portuguese adolescents.
- Source :
- Journal of Science & Medicine in Sport; Jan2011, Vol. 14 Issue 1, p79-84, 6p
- Publication Year :
- 2011
-
Abstract
- Abstract: There is increasing evidence that cardiorespiratory fitness (CRF) is an important health marker already in youth. This study aimed to determine the ability of five VO<subscript>2max</subscript> equations to discriminate between low/high Metabolic Risk in 450 Portuguese adolescents aged 10–18. We measured waist and hip circumferences, fasting glucose, total cholesterol, HDL-cholesterol, LDL-cholesterol, triglycerides, and blood pressure. For each of these variables, a Z-score was computed. The HDL-cholesterol was multiplied by −1. A metabolic risk score was constructed by summing the Z scores of all individual risk factors. High risk was considered when the individual had ≥1 SD of this score. Cardiorespiratory fitness (CRF) was measured with the 20-m shuttle run test. We estimated VO<subscript>2max</subscript> from the CRF tests using five equations. ROC analyses showed a significant discriminatory accuracy for the Matsuzaka and Barnett(a) equations in identifying the low/high metabolic risk in both genders (Matsuzaka girls: AUC=0.654, 95%CI: 0.591–0.713, p <0.001, VO<subscript>2max</subscript> =39.5mLkg<superscript>−1</superscript> min<superscript>−1</superscript>; boys: AUC=0.648, 95%CI: 0.576–0.716, p <0.001, VO<subscript>2max</subscript> =41.8mLkg<superscript>−1</superscript> min<superscript>−1</superscript>; Barnett(a) girls: AUC=0.620, 95%CI: 0.557–0.681, p <0.001, VO<subscript>2max</subscript> =46.4mLkg<superscript>−1</superscript> min<superscript>−1</superscript>; boys: AUC=0.628, 95%CI: 0.555–0.697, p =0.04, VO<subscript>2max</subscript> =42.6mLkg<superscript>−1</superscript> min<superscript>−1</superscript>), and the Ruiz equation in boys (AUC=0.638, 95%CI: 0.565–0.706, p <0.001, VO<subscript>2max</subscript> =47.1mLkg<superscript>−1</superscript> min<superscript>−1</superscript>). The VO<subscript>2max</subscript> values found require further testing in other populations as well as in longitudinal studies; the identification of adolescents who have low CRF levels can help detect youth with an increased risk of metabolic disease. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14402440
- Volume :
- 14
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Journal of Science & Medicine in Sport
- Publication Type :
- Academic Journal
- Accession number :
- 57080215
- Full Text :
- https://doi.org/10.1016/j.jsams.2010.07.003