Peak Oxygen Uptake and Physical Activity in 13- to 18-Year-Olds: The Young-HUNT Study.

• Autores: Bjarne Martens Nes, Ida B. Oyen Osthus, Boye Welde, Stian Thoresen Aspenes, Ulrik Wisløff
• Localización: Medicine & Science in Sports & exercise: Official Journal of the American College of Sports Medicine, ISSN 0195-9131, Vol. 45, Nº. 2, 2013, págs. 304-313
• Idioma: inglés
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• Dialnet Métricas: 1 Cita
• Resumen

  • AB Purpose: The present study describes the distribution of cardiorespiratory fitness (V[spacing dot above]O2peak) in a large sample of healthy adolescents and the associations between V[spacing dot above]O2peak, self-reported physical activity, and a selection of conventional markers for future cardiovascular health. Methods: In a substudy of the Young-HUNT study in Norway, 570 adolescents (289 girls and 281 boys) 13-18 yr old were tested for directly measured V[spacing dot above]O2peak. Blood pressure, resting heart rate, height, weight, and waist circumference was measured by standardized procedures. Data about physical activity and pubertal development were obtained using self-administered questionnaires. General linear modeling and ANOVA were used to examine the relationships between V[spacing dot above]O2peak and age, physical activity, and cardiovascular risk factors. Results: The mean +/- SD V[spacing dot above]O2peak was 183.9 +/- 24.6 mL[middle dot]kg-0.67[middle dot]min-1 (49.2 mL[middle dot]kg-1[middle dot]min-1) in girls and 235.1 +/- 35.3 mL[middle dot]kg-0.67[middle dot]min-1 (59.5 mL[middle dot]kg-1[middle dot]min-1) in boys. Absolute V[spacing dot above]O2peak (L[middle dot]min-1) was consistently higher in older age groups in both sexes (P trend < 0.001). V[spacing dot above]O2peak allometrically scaled to body mass (mL[middle dot]kg-0.67[middle dot]min-1) was similar across the age groups in girls (i.e., difference between 13- to 14-yr-olds and 17- to 18-yr-olds = -3.2 mL[middle dot]kg-0.67[middle dot]min-1, 95% confidence interval = 3.8 to -10.1) and slightly higher in the older age groups in boys (i.e., difference between 13- to 14-yr-olds and 15- to 16-yr-olds = -31.0 mL[middle dot]kg-0.67[middle dot]min-1, 95% confidence interval = -22.0 to -40.1). Physical activity was positively associated with V[spacing dot above]O2peak in all sex and age groups. Quartiles of V[spacing dot above]O2peak were inversely associated with resting heart rate (P trend = 0.004) in both sexes and body mass index (P trend = 0.004) and waist circumference (P trend = 0.006) in boys. Conclusion: Although V[spacing dot above]O2peak was generally high across the age groups, V[spacing dot above]O2peak was higher in physically active adolescents of both sexes and physical activity in accordance with the recommended level may be sufficient to maintain or even increase V[spacing dot above]O2peak through adolescence