<p class="titulo1" align="center">&nbsp;</p><p class="tabulado1" align="justify">Los objetivos de este estudio fueron comparar la frecuencia card&iacute;aca (FC) media entre dos tipos de entrenamiento de carga externa equiparada basados en la carrera, la relaci&oacute;n de la velocidad aer&oacute;bica m&aacute;xima (VAM) con la F.C. de reserva (FCR) y los efectos de estos dos tipos de entrenamiento sobre la F.C. basal (FCB). El estudio se llev&oacute; a cabo con ocho estudiantes de educaci&oacute;n f&iacute;sica (23,25 a&ntilde;os; VAM: 17,93 Km.h-1) que realizaron dos tipos de entrenamiento: CC =8 km al 70%VAM y CI= 4x(1000m al 90%VAM+1000m al 50% VAM). Se registr&oacute; la FC durante el entrenamiento y la FCB antes y despu&eacute;s del mismo. La diferencia de la FC media entre ambos m&eacute;todos no fue estad&iacute;sticamente significativa, sin embargo las medias del CC (FCCC) (Z=2,240; p&lt;0,05) y CI (FCCI) (Z=2,380; p&lt;0,05) fueron significativamente m&aacute;s elevadas que la calculada al 70% de FCR. La FCB se elev&oacute; de forma significativa (Z=2,319; p=0.020) solamente despu&eacute;s del entrenamiento CI. En conclusi&oacute;n, dos m&eacute;todos de entrenamiento distintos, pero de intensidad media similar, pueden dar lugar a una FC media tambi&eacute;n similar. La intensidad de carrera programada en funci&oacute;n de la VAM es significativamente superior a la programada en funci&oacute;n de la FCR. El entrenamiento interv&aacute;lico puede tener un mayor efecto sobre el incremento de la FCB.<br />PALABRAS CLAVE: Frecuencia card&iacute;aca media, frecuencia card&iacute;aca de reserva, frecuencia card&iacute;aca basal, VAM, carrera continua, carrera interv&aacute;lica.</p>
<p class="tabulado1" align="justify">The aims of this study were to compare the mean heart rate response in two training methods of equal average intensity based on running, the relationship of the maximal aerobic speed (VAM) with the reserve heart rate (FCR) and the effects of these modes of training on the basal heart rate (FCB). The study was carried out with eight physical activity students (23,25 years old; VAM: 17,93 Km.h^-1), who performed: CC= 8 km at 70% VAM and CI= 4x(1000m at 90% VAM+1000m at 50% VAM). Heart rate was registered during sessions and FCB before and after of the training session. The difference in the mean heart rate between both training modes not statistically significant. However, the mean heart rate of the CC (FCCC) (Z=2,240; p&lt;0,05) and CI (FCCI) (Z=2,380; p&lt;0,05) were significantly higher than the calculated 70% heart rate reserve (FCR70%). The FCB was only significantly higher after CI (Z=2,319; p&lt;0,05). In conclusion, two different training modes, but of equal average intensity, can produce a similar mean heart rate. The intensity of the programed run based on the VAM is significantly higher than one based on the FCR. The strongly increase in FCB can be influenced by the interval training method.<br />KEY WORDS: mean H.R., reserve H.R., basal H.R., MAS, continuous training, interval training.</p>