VALIDEZ DEL DÉFICIT MÁXIMO DE OXÍGENO ACUMULADO COMO ÍNDICE DE CAPACIDAD ANAERÓBICA

Abstract

<div class="titulo1"><br /></div><p align="center"><strong>RESUMEN</strong></p> <p class="resumenyabstract" align="justify">Para determinar la validez del d&eacute;ficit acumulado de ox&iacute;geno (DMOA) como &iacute;ndice de capacidad anaer&oacute;bica, en 29 varones, estudiantes de Educaci&oacute;n F&iacute;sica, se determin&oacute; el DMOA, la concentraci&oacute;n de lactato en sangre capilar al finalizar un test supram&aacute;ximo al 120 % VO2max, la potencia media y m&aacute;xima desarrolladas en el test de Wingate y la masa muscular de las extremidades inferiores mediante absorciometr&iacute;a fot&oacute;nica dual de rayos X. El DMOA correlacion&oacute; con la concentracci&oacute;n de lactato en sangre alcanzada al final del test de capacidad anaer&oacute;bica (r=0.43, p&lt;0.05, n=28), con el trabajo realizado y con el VO2 acumulado en el test de capacidad anaer&oacute;bica (r=0.59, p&lt;0.001, n=28 y r=0.56, p&lt;0.01, n=29, respectivamente). La lactatemia al final del test de capacidad anaer&oacute;bica correlacion&oacute; con trabajo realizado en el test de capacidad anaer&oacute;bica en valores absolutos (r=0.49, p&lt;0.01, n=27) y con el trabajo divido entre la masa muscular de las extremidades inferiores (r=0.65, p&lt;0.001, n=26). No se observaron correlaciones significativas entre el DMOA y la potencia m&aacute;xima, ni tampoco entre el DMOA y la potencia media desarrolladas en el test Wingate, ya sea expresadas en valores absolutos o referidos a la masa muscular de las piernas. Tampoc&oacute; correlacion&oacute; la lactatemia alcanzada al final del test de capacidad anaer&oacute;bica con la potencia m&aacute;xima ni con la potencia media desarrollada en el test de Wingate. Aunque conceptualmente el DMOA es el mejor no invasivo procedimiento para medir la capacidad anaer&oacute;bica, la ausencia de correlaciones con otras variables que se han mostrado &uacute;tiles en la evaluaci&oacute;n de las cualidades anaer&oacute;bicas limita su inter&eacute;s desde el punto de vista pr&aacute;ctico. <br /> PALABRAS CLAVE: d&eacute;ficit de ox&iacute;geno, capacidad anaer&oacute;bica, rendimiento, validez, condici&oacute;n f&iacute;sica.</p> <p align="justify">&nbsp;</p> <p class="titulo1" align="center"><strong>ABSTRACT</strong></p> <p class="resumenyabstract" align="justify">To assess the validity of the maximal accumulated oxygen deficit (MAOD) as a measure of the anaerobic capacity, the following variables were determined in twenty nine male Physical Education students: the DMOA, the blood lactate concentration at the end of a exhausting supramaximal bout 120 % VO2max, the maximal and the mean power attained during a Wingate test, and the muscle mass of the legs by dual X-ray absorptiometry. A relationship was found between the MAOD and the blood lactate concentration at the end of the supramaximal bout (r=0.43, p&lt;0.05, n=28). MAOD was also related with both the work performed and the accumulated VO2 achieved during the supramaximal exercise (r=0.59, p&lt;0.001, n=28 y r=0.56, p&lt;0.01, n=29, respectively). The blood lactate concentration at the end of the supramaximal exercise was correlated with the work performed during the supramaximal exercise (r=0.49, p&lt;0.01, n=27). This relationship was stronger after accounting for differences in legs muscle mass (r=0.65, p&lt;0.001, n=26). No relationship was found between MAOD and Wingate maximal and mean power output, even after accounting for differences in legs muscle mass. Neither there was a relationship between the maximal or mean power attained during the Wingate and the blood lactate concentration at the end of the supramaximal exercise. Despite that theoretically the MAOD is the best non-invasive procedure to assess the anaerobic capacity, the weakness of the relationship between MAOD and other variables commonly used in the assessment of the anaerobic qualities limits its interest from a practical perspective.<br /> KEY WORDS: Oxygen deficit, anaerobic capacity, performance, validity, fitness.</p>