¿La suplementación aguda de nitratos afecta los puntos de transición en las pruebas incrementales progresivas?

Autores/as

DOI:

https://doi.org/10.15359/

Palabras clave:

Suplementación, Velocidad, Rendimiento, Umbrales, Frecuencia Cardiaca

Resumen

Introducción: La suplementación con nitratos ha mostrado resultados prometedores en deportes de resistencia. Objetivo: Este estudio tiene como objetivo utilizar la frecuencia cardíaca (FC) y sus derivados—el punto de inflexión de la frecuencia cardíaca (HRIP) y el punto de deflexión de la frecuencia cardíaca (HRDP)—para detectar puntos de transición metabólica (MTPs) y la velocidad máxima (Vpeak) en corredores amateurs después de una suplementación aguda con nitrato (NO3-) mediante jugo de remolacha azucarera. Metodología: Administramos 70 ml de jugo concentrado de remolacha rico en NO3- (~6.4 mmol NO3- - 400 mg) o un placebo sin NO3- (0.04 mmol NO3- >0.8 g/L) a trece atletas masculinos amateurs dos horas antes de que realizaran una prueba progresiva incremental (PIT) en una cinta de correr hasta el agotamiento, con un período de lavado de 7 días. Graficamos los datos de FC cada 2 minutos para identificar HRIP y HRDP, y los sujetos debían alcanzar al menos el 90% de su FC máxima (HRMAX) para que la prueba se considerara máxima. Calculamos Vpeak utilizando la fórmula de Kuipers y establecimos el umbral de significancia estadística en p<0.05. Resultados: Los valores de HRMAX después de la suplementación con placebo o jugo de remolacha no mostraron diferencias significativas (p=0.573). De manera similar, los datos de MTP, incluyendo HRIP (p=0.252) y los valores de HRDP (p=0.508), no mostraron diferencias significativas después de la suplementación. No se observaron diferencias en Vpeak ni en las velocidades en HRIP y HRDP después de la suplementación (p=0.562; p=0.340, respectivamente). Conclusiones: La suplementación con nitratos no mejoró el rendimiento, ya que las métricas de HRMAX, HRIP, HRDP y Vpeak permanecieron sin cambios después de la suplementación.

Biografía del autor/a

Sandro Fernandes da Silva, Departamento de Educación Física Universidad Federal de Lavras

Grupo de Estudios e Investigacion en Respuestas Neuromusculares - GEPREN
Departamento de Educación Física
Universidad Federal de Lavras

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Publicado

2024-12-10

Cómo citar

Dias dos Santos Leal, L., Abreu, C. W., Gonçalves, R., Domínguez, R., & Fernandes da Silva, S. (2024). ¿La suplementación aguda de nitratos afecta los puntos de transición en las pruebas incrementales progresivas?. MHSalud: Revista En Ciencias Del Movimiento Humano Y Salud, 21(2), e19264. https://doi.org/10.15359/

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Artículos Científicos (Arbitrada por pares)

Cómo citar

Dias dos Santos Leal, L., Abreu, C. W., Gonçalves, R., Domínguez, R., & Fernandes da Silva, S. (2024). ¿La suplementación aguda de nitratos afecta los puntos de transición en las pruebas incrementales progresivas?. MHSalud: Revista En Ciencias Del Movimiento Humano Y Salud, 21(2), e19264. https://doi.org/10.15359/

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