The Relationships Between Leptin and Measures of Fitness and Fatness Are Dependent Upon Obesity Status in Youth

• Autores: Peter A. Hosick, Robert G. McMurray, Dam M. Cooper
• Localización: Pediatric exercise science, ISSN 0899-8493, Vol. 22, Nº. 2, 2010, págs. 195-204
• Idioma: inglés
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• Resumen

  • The relationship between peak aerobic fitness (peakVO2) and plasma leptin was assessed in 25 normal (BMI < 85th %tile) and 25 overweight (BMI > 85th %tile) youth, ages 7-17 years. In the overall analysis peakVO2 was related to leptin when expressed in mL/kg/min (R2 = .516, p < .0001), or as mL/kgFFM/min (R2 = .127, p = .01). The relationships between peakVO2 and leptin were no longer significant when percent bodyfat was added to the models. In subanalyses by weight groups, peakVO2: leptin relationships were not evident for normal weight, but remained for overweight youth. In conclusion the relationship between aerobic fitness and leptin in youth is dependent upon weight status.