The role of biological maturation intervention and anthropometric factors on cardiac reserve index (OUES) in Iranian teenage boys

Abstract

The development and organism change, especially changes in biological maturation process, is impressive on the physiological parameters in response to exercise. Hence, the new index oxygen uptake efficiency slope (OUES) role with biological maturity intervention and anthropometric factors of body weight, BSA and LBM which can measure the cardiorespiratory function in children maturity level normal and abnormal (early or late) with high health and safety is important. 72 healthy young males, with a mean age 13.95 ± 1.8 years and BMI 19.91 ± 3.4 kg/m 2 were separated into two groups of normal puberty (n = 33) and abnormal maturation (n = 39). After consent obtaining, their VO 2max was determined by maximal aerobic test via gas analyzer (VE, VO 2 and VCO 2 ). The new index OUES was also determined according to logarithmic relationship Baba. A high correlation was observed between VO 2max and OUES physiological index (R 2 = 0.90, SEE = 292). There was no significant difference in the index OUES with and without the intervention of weight, BSA and LBM between normal and abnormal maturation of boys (p > 0.05). Significant correlation between VO 2max and normalized OUES with anthropometric variables was obtained (R = 0.83, R = 0.87, R = 0.91, p = 0.00). OUES is influenced by weight, BSA and LBM. But the BSA role in the index of cardiac performance was more sensitive than the other two parameters. It appears that due to the lack of intervention maturation effect on this index, during the study of cardiorespiratory system physiological responses of children to exercise, regardless of the maturity the application of this index is possible. © 2015 Consell Català de l'Esport. Document downloaded from http://www.apunts.org, day 24/12/2015. This copy is for personal use. Any transmission of this document by any media or format is strictly prohibited. Document downloaded from http://www.apunts.org, day 13/01/2016. This copy is for personal use. Any transmission of this document by any media or format is strictly prohibited. 140 F. Nazem, A. Sazvar PALABRAS CLAVEMadurez; Antropometría; Gradiente de eficiencia de la captación de oxígeno (Oxygen Uptake Efficiency Slope (OUES)) Papel de los factores de maduración biológica y antropométricos en la tasa de reserva cardiaca (TRC) en adolescentes iraníesResumen Los cambios en el desarrollo, especialmente los cambios en el proceso de maduración biológica, pueden conllevar unas diferencias impresionantes en cuanto a los parámetros fisiológicos como respuesta al ejercicio. Por tanto, es importante el papel que representa el nuevo índice del gradiente de eficiencia del consumo de oxígeno (''oxygen uptake efficiency slope (OUES)'' porque incluye variables de maduración biológica, así como factores como el peso corporal antropométrico, el área de la superficie corporal (ASC) y la magra masa corporal (MMC). Por tanto, dicho índice puede medir, de modo seguro, la función cardiorespiratoria en niños con niveles de madurez normal o anormal (temprana o tardía), y aportar una información...