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espanolObjetivo: evaluar el valor predictivo de la escala de Borg (CR-10; 1-10) para el inicio de la acumulacion de lactato en sangre (OBLA). Metodos: 91 jovenes mexicanos realizaron tres pruebas de ejercicio submaximas no consecutivas. La frecuencia cardiaca (FC), el lactato en sangre y el consumo de oxigeno se registraron en cada determinacion del CR-10. Se calcularon ecuaciones de regresion y los puntos de corte de FC y al OBLA. Resultados: La FC (86 lat/min) y el CR-10 (4.5) predijeron el OBLA con la misma certeza, independientemente de la masa corporal del sujeto. CR-10, la FC y el consumo de oxigeno explicaron independientemente mas de 60% de la varianza asociada al OBLA. Conclusiones: CR-10 es util para predecir el OBLA con casi la misma certeza que la FC, independientemente de la masa corporal del sujeto. EnglishAim: To evaluate the predictive value of Borg’s category ratio-scale (CR-10; 1-10) toward the onset of blood lactate accumulation (OBLA). Methods: 91 young Mexicans performed three non-consecutive sub-maximal exercise tests. Heart rate (HR), blood lactate and oxygen uptake were recorded at each CR-10 rating. Regression equations, reliable HR and CR-10 cut-off points of OBLA were then calculated. Results: HR (86 beats/min) and CR-10 (4.5) predicted OBLA with the same certainty, regardless the subject’s body mass. CR-10, HR and oxygen uptake, independently explained more than 60% of the associated variance to OBLA. Conclusions: CR-10 is useful to predict OBLA with almost the same certainty that HR, regardless the subject’s body mass.

ciencia ergo-sum/ciencia ergo sum

Borg’s category ratio-scale (CR-10) is useful to predict the onset of blood lactate accumulation (OBLA) in young Mexicans adults, regardless their body mass