{"id":6073,"date":"2024-03-18T11:55:09","date_gmt":"2024-03-18T14:55:09","guid":{"rendered":"https:\/\/www.demusculos.com\/contenidos\/?p=6073"},"modified":"2026-08-28T23:52:58","modified_gmt":"2026-08-29T02:52:58","slug":"l-leucina","status":"publish","type":"post","link":"https:\/\/www.demusculos.com\/contenidos\/l-leucina\/","title":{"rendered":"L-leucina: qu\u00e9 es y por qu\u00e9 es la estrella de los BCAA"},"content":{"rendered":"\n

De los tres amino\u00e1cidos ramificados, la leucina es la que se lleva toda la atenci\u00f3n<\/strong>. Vamos a ver por qu\u00e9, y tambi\u00e9n d\u00f3nde est\u00e1 el l\u00edmite entre lo que se sabe y lo que se promete.<\/p>\n\n\n\n

Qu\u00e9 es la leucina<\/h2>\n\n\n\n

La L-leucina<\/strong> es un amino\u00e1cido esencial<\/strong>: el cuerpo no puede fabricarla, tiene que venir de la comida. Y es uno de los tres ramificados<\/strong> o BCAA.<\/p>\n\n\n\n

\ud83c\udf33 Por qu\u00e9 se llaman \u201cramificados\u201d<\/strong>Es pura qu\u00edmica y se entiende f\u00e1cil: la mayor\u00eda de los amino\u00e1cidos tiene una cadena de \u00e1tomos derecha<\/strong>. Estos tres tienen una rama que sale al costado<\/strong>.

De ah\u00ed sale BCAA<\/strong>: Branched-Chain Amino Acids<\/em>, amino\u00e1cidos de cadena ramificada.

Son tres y siempre los mismos: leucina, isoleucina y valina<\/strong>. Los tres son esenciales, o sea que el cuerpo no los fabrica.<\/span><\/div>\n\n\n\n

Por qu\u00e9 la leucina es la m\u00e1s nombrada<\/h2>\n\n\n\n

Porque es la que m\u00e1s se ha estudiado en relaci\u00f3n al m\u00fasculo<\/strong>. La leucina participa en la se\u00f1alizaci\u00f3n que activa la s\u00edntesis de prote\u00ednas musculares<\/strong>: es como el interruptor que le avisa al cuerpo que hay material disponible para construir.<\/p>\n\n\n\n

\ud83d\udca1 Un dato que cambia c\u00f3mo mir\u00e1s las etiquetas<\/strong>Cuando ves BCAA 2:1:1<\/strong> en un pote, esos n\u00fameros son la proporci\u00f3n entre los tres ramificados.

El primero es siempre la leucina<\/strong>. O sea: por cada 2 partes de leucina hay 1 de isoleucina y 1 de valina.

Vas a ver tambi\u00e9n 4:1:1 y hasta 8:1:1. Cuanto m\u00e1s alto el primer n\u00famero, m\u00e1s leucina proporcionalmente.<\/strong> Ahora ya sab\u00e9s qu\u00e9 est\u00e1s comparando.<\/span><\/div>\n\n\n\n

En qu\u00e9 alimentos est\u00e1<\/h2>\n\n\n\n
Fuente<\/th>Detalle<\/th><\/tr><\/thead>
Prote\u00edna de suero<\/strong><\/td>Es de las fuentes m\u00e1s concentradas<\/td><\/tr>
Carnes<\/strong><\/td>Vacuna, pollo, cerdo<\/td><\/tr>
Huevos<\/strong><\/td>Sobre todo la clara<\/td><\/tr>
L\u00e1cteos<\/strong><\/td>Queso, yogur, leche<\/td><\/tr>
Legumbres<\/strong><\/td>Soja, lentejas, porotos<\/td><\/tr>
Frutos secos<\/strong><\/td>En menor proporci\u00f3n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ud83d\udca1 Si tom\u00e1s prote\u00edna de suero<\/strong>, ya est\u00e1s tomando leucina, y en buena cantidad. Es una de las razones por las que la whey es la prote\u00edna m\u00e1s usada en el deporte.<\/p>\n\n\n\n

\u00bfVale la pena comprarla suelta?<\/h2>\n\n\n\n
Ac\u00e1 va nuestra opini\u00f3n, aunque no empuje a comprar nada.

Si ya tom\u00e1s una prote\u00edna de suero, la leucina la ten\u00e9s cubierta.<\/strong> Comprarla adem\u00e1s por separado tiene sentido en muy pocos casos.

Los BCAA sueltos tienen m\u00e1s l\u00f3gica en situaciones puntuales: entrenamientos muy largos, o cuando por alg\u00fan motivo no pod\u00e9s tomar prote\u00edna completa.

Si est\u00e1s armando tu suplementaci\u00f3n desde cero, empez\u00e1 por la prote\u00edna<\/strong>. Es lo que m\u00e1s rinde por peso.<\/span><\/div>\n\n\n\n
\"WheyWhey 2 Lbs de DMS Nutrition<\/strong>Perfil completo de amino\u00e1cidos<\/span>Ver producto<\/span><\/a><\/div>
\"BCAABCAA 2000 x120 de Star<\/strong>Los tres ramificados en c\u00e1psulas<\/span>Ver producto<\/span><\/a><\/div>
\"CreatinaCreatina 300 g de DMS<\/strong>Monohidrato micronizada, 60 tomas<\/span>Ver producto<\/span><\/a><\/div>
\"GlutaminaGlutamina 200 g Hoch Sport<\/strong>Sin sabor, para sumar a lo que tomes<\/span>Ver producto<\/span><\/a><\/div><\/div>\n\n\n\n

Ver todos los amino\u00e1cidos<\/strong><\/a> \u00b7 M\u00e1s sobre los BCAA<\/a><\/p>\n\n\n\n

Preguntas frecuentes<\/h2>\n\n\n\n
\u00bfPara qu\u00e9 sirve la leucina?<\/strong><\/strong><\/summary>

Es un amino\u00e1cido esencial<\/strong> y uno de los tres ramificados. Participa en la se\u00f1alizaci\u00f3n de la s\u00edntesis de prote\u00ednas musculares<\/strong>.
Eso es lo que est\u00e1 m\u00e1s establecido. Cu\u00e1nto se traduce eso en resultados visibles depende de muchas otras cosas: c\u00f3mo entren\u00e1s, cu\u00e1nto com\u00e9s, cu\u00e1nto descans\u00e1s.<\/p><\/details>

\u00bfQu\u00e9 significa BCAA 2:1:1?<\/strong><\/strong><\/summary>

Es la proporci\u00f3n entre leucina, isoleucina y valina<\/strong>. El primer n\u00famero siempre es la leucina.
Vas a ver tambi\u00e9n 4:1:1 y 8:1:1. Cuanto m\u00e1s alto el primer n\u00famero, m\u00e1s leucina proporcionalmente.<\/p><\/details>

\u00bfNecesito comprarla aparte de la prote\u00edna?<\/strong><\/strong><\/summary>

En la mayor\u00eda de los casos, no.<\/strong> La prote\u00edna de suero ya aporta leucina en buena cantidad.
Si est\u00e1s empezando, invert\u00ed primero en una prote\u00edna. Rinde m\u00e1s por lo que gast\u00e1s.<\/p><\/details>

\u00bfTiene efectos secundarios?<\/strong><\/strong><\/summary>

Es un nutriente presente en los alimentos que com\u00e9s todos los d\u00edas, no una sustancia ajena al organismo.
Dicho eso: como con cualquier suplemento, respet\u00e1 la dosis del envase<\/strong>. Y si ten\u00e9s alguna condici\u00f3n de salud, consultalo con un profesional antes.<\/p><\/details><\/div>\n\n\n\n\n\n\n\n\n\n

C\u00f3mo escribimos esta ficha<\/strong>Describimos funciones establecidas y fuentes alimentarias<\/strong>. Cuando la evidencia sobre un efecto no es concluyente, lo decimos en vez de inventar un beneficio.

Los suplementos dietarios son para mayores de 18 a\u00f1os y no reemplazan a una alimentaci\u00f3n variada. Ante cualquier duda de salud, consult\u00e1 con un profesional.<\/span><\/div>\n\n\n\n
Otras notas sobre amino\u00e1cidos<\/strong>
L-Carnitina<\/a>L-arginina: qu\u00e9 es, el \u00f3xido n\u00edtrico y d\u00f3nde e<\/a>L-lisina: qu\u00e9 es, en qu\u00e9 alimentos est\u00e1 y por <\/a>Ornitina: qu\u00e9 es, d\u00f3nde est\u00e1 y por qu\u00e9 aparece<\/a>Citrulina: qu\u00e9 es, de d\u00f3nde viene su nombre y <\/a>L-Isoleucina<\/a><\/div>En la tienda<\/strong>
BCAA 2000 x120 de Star<\/a>Glutamina 150 g de Pulver<\/a>Beta Alanina 300 g de DMS<\/a><\/div>Ver los amino\u00e1cidos<\/a><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"

De los tres amino\u00e1cidos ramificados, la leucina es la que se lleva toda la atenci\u00f3n. Vamos a ver por qu\u00e9, y tambi\u00e9n d\u00f3nde est\u00e1 el l\u00edmite entre lo que se sabe y lo que se promete. Qu\u00e9 es la leucina La L-leucina es un amino\u00e1cido esencial: el cuerpo no puede fabricarla, tiene que venir de […]<\/p>\n","protected":false},"author":1,"featured_media":10212,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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qu\u00e9 sirve la leucina?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Es un amino\u00e1cido esencial y uno de los tres ramificados. 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