Los EFECTOS DE LA SUPLEMENTACIÓN ORAL DE L-ARGININA SOBRE LA HIPOTENSIÓN POST-EJERCICIO DE RESISTENCIA EN INDIVIDUOS NORMOTENSOS: UN ENSAYO DE CONTROL ALEATORIZADO, DOBLE CIEGO
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https://doi.org/10.12820/rbafs.31e0443Palabras clave:
Ergogenic aidsResumen
La L-arginina es esencial para la síntesis de óxido nítrico, y estudios han demostrado que el óxido nítrico promueve efectos hipotensores después de la suplementación con L-arginina. Sin embargo, no hay evidencia que evalúe el efecto de la suplementación con L-arginina sobre la hipotensión post-ejercicio en individuos normotensos después de una sola sesión de ejercicio de resistencia. Por lo tanto, el objetivo de este estudio fue investigar si la hipotensión post-ejercicio de resistencia aumenta después de la suplementación oral con L-arginina en individuos normotensos sometidos a ejercicio de resistencia. Se reclutaron doce sujetos varones sedentarios y normotensos. Los voluntarios recibieron 6 g de L-arginina oral o placebo antes del ejercicio de resistencia. Se tomaron muestras de presión arterial [PA] y de sangre para el análisis de óxido nítrico antes y 60 minutos después del ejercicio de resistencia. La sesión de ejercicio de resistencia comenzó inmediatamente después de la toma de la muestra de sangre; se realizó al 60% de la fuerza contráctil voluntaria isotónica máxima en 3 series de 12 repeticiones para los principales grupos musculares. La presión arterial sistólica del grupo de L-arginina fue significativamente menor que la del grupo placebo 60 minutos después del ejercicio de resistencia. La concentración plasmática de óxido nítrico fue significativamente mayor en el grupo de L-arginina que en el grupo placebo 60 minutos después del ejercicio de resistencia. En conclusión, la suplementación con L-arginina redujo la presión arterial en sujetos normotensos después del ejercicio de resistencia, probablemente mediante un aumento en la concentración de óxido nítrico. El efecto hipotensor de la L-arginina en sujetos normotensos sometidos a ejercicio de resistencia podría mejorarse mediante la prevención de enfermedades cardiovasculares primarias.
Palabras clave: ayudas ergogénicas, óxido nítrico, presión arterial, ejercicio de fuerza
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Derechos de autor 2026 Pedro Marques Almeida, Thiago dos Santos Rosa, Deocleciano Ferreira Rios-Neto, Douglas Araujo Vargas, Jessica Mycaelle da Silva Barbosa, Taynah Oliveira Martins, Michel Kendy Souza, Rodrigo Vanerson Passos Neves, Reury Frank Pereira Bacurau, Marcelo Saldanha Aoki, Ronaldo Carvalho Araujo, Hugo de Luca Correa, Alexandre Sérgio Silva, Thomas Caique Cabral Rocha Moraes, Milton Rocha Moraes
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