This study examines sports nutrition, focusing and analyzing the impact of branched-chain amino acids (BCAA) on athletic performance during training and in the subsequent phase of muscle recovery. he goal is to determine the impact of supplementing these nutrients on muscle growth and to ascertain the advantages they offer to athletes. The analysis begins by examining the organization and roles of amino acids, then delves into an in-depth examination of branched-chain amino acids, such as leucine, isoleucine, and valine. Even though BCAA supplements are widely recognized for their role in building muscle, this research seeks to show that their main impact is on improving recovery and decreasing muscle tiredness. Regarding muscle anabolism, the study finds that while BCAAs contribute to this process, they alone do not drive muscle protein synthesis. Evidence suggests that BCAAs on their own, without all other essential amino acids (EAAs), are not sufficient to effectively stimulate muscle synthesis. Despite widespread use in both professional and recreational settings, their standalone effect is limited and generally surpassed by a balanced protein-rich diet. Nevertheless, BCAAs offer valuable benefits in sports, particularly for their ability to minimize fatigue and enhance muscle recovery. The study also examines the metabolic processes involving BCAAs, specifically the activation of the mTOR pathway, a critical mechanism in muscle synthesis. Finally, the study addresses the effective intake ranges needed for BCAAs to have a positive impact and identifies optimal dosages for supporting muscle growth, recovery, and reduced fatigue perception post-training.
Questo studio esamina l’alimentazione sportiva, in particolare analizza l’effetto degli aminoacidi ramificati (BCAA - branched chain aminoacids) sull’andamento delle prestazioni sportive sia durante allenamento sia nella fase successiva di recupero muscolare. L’obiettivo è comprendere come l’assunzione di questi nutrienti possa incidere sullo sviluppo muscolare, nonché individuare i benefici per lo sportivo. L’analisi parte dallo studio delle funzioni e struttura degli aminoacidi per poi approfondire la particolare tipologia degli aminoacidi ramificati, tra cui la leucina, la isoleucina e la valina. Questi ultimi nonostante siano conosciuti per incentivare l’anabolismo muscolare, in realtà come questo studio vuole dimostrare questi si caratterizzano principalmente per favorire il recupero e ridurre l’affaticamento muscolare. Infatti, quanto alla loro capacità di promozione dell’anabolismo muscolare, l’analisi vuole dimostrare che, sebbene i BCAA abbiano un ruolo in questo processo, non svolgono un ruolo chiave nella sintesi proteica muscolare. Questo perché è stato dimostrato che l’assunzione di soli BCAA, senza una corretta integrazione di tutti gli aminoacidi essenziali (EEA), non è sufficiente a stimolare efficacemente la sintesi proteica. Nonostante siano spesso utilizzati in ambito agonistico e non, il loro impatto isolato risulta limitato e in ogni caso facilmente superato da una dieta proteica. Ciononostante, l’assunzione di aminoacidi ramificati apporta grandi benefici nello sportivo proprio grazie alla loro capacità di ridurre l’affaticamento e favorire il recupero muscolare. Inoltre, lo studio approfondisce il metabolismo degli aminoacidi ramificati, in particolar modo l’attivazione della via mTOR principale responsabile della sintesi muscolare. Infine, lo studio si sofferma sui range massimi e minimi necessari per avere un riscontro positivo dall’assunzione del BCAA e individua i dosaggi ottimali per favorire la crescita e il recupero muscolare post-training per la riduzione della percezione della fatica.
Alimentazione sportiva e l’effetto degli amminoacidi ramificati: analisi delle funzioni e delle criticità
CAPOTORTO, MICHELE
2023/2024
Abstract
This study examines sports nutrition, focusing and analyzing the impact of branched-chain amino acids (BCAA) on athletic performance during training and in the subsequent phase of muscle recovery. he goal is to determine the impact of supplementing these nutrients on muscle growth and to ascertain the advantages they offer to athletes. The analysis begins by examining the organization and roles of amino acids, then delves into an in-depth examination of branched-chain amino acids, such as leucine, isoleucine, and valine. Even though BCAA supplements are widely recognized for their role in building muscle, this research seeks to show that their main impact is on improving recovery and decreasing muscle tiredness. Regarding muscle anabolism, the study finds that while BCAAs contribute to this process, they alone do not drive muscle protein synthesis. Evidence suggests that BCAAs on their own, without all other essential amino acids (EAAs), are not sufficient to effectively stimulate muscle synthesis. Despite widespread use in both professional and recreational settings, their standalone effect is limited and generally surpassed by a balanced protein-rich diet. Nevertheless, BCAAs offer valuable benefits in sports, particularly for their ability to minimize fatigue and enhance muscle recovery. The study also examines the metabolic processes involving BCAAs, specifically the activation of the mTOR pathway, a critical mechanism in muscle synthesis. Finally, the study addresses the effective intake ranges needed for BCAAs to have a positive impact and identifies optimal dosages for supporting muscle growth, recovery, and reduced fatigue perception post-training.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/77964