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Nutrición Hospitalaria
versión On-line ISSN 1699-5198versión impresa ISSN 0212-1611
Resumen
HUERTA OJEDA, Álvaro; DOMINGUEZ DE HANNA, Andreina y BARAHONA-FUENTES, Guillermo. The effect of supplementation with L-arginine and L-citrulline on physical performance: a systematic review. Nutr. Hosp. [online]. 2019, vol.36, n.6, pp.1389-1402. Epub 24-Feb-2020. ISSN 1699-5198. https://dx.doi.org/10.20960/nh.02478.
Introduction:
the amino acids L-arginine (L-arg) and L-citrulline (L-citr) have been used in sports nutrition, and it is believed that they have an effect on physical performance. However, current information is varied and inconclusive.
Objective:
to review and analyze the scientific evidence in the last ten years, which reflects a connection between the effect of L-arg and L-citr supplementation and physical performance.
Material and method:
this study is a systematic review of articles previously published, following the PRISMA model. Those articles published between 2008 and 2018 that connected the effect of L-arg and L-citr supplementation with physical performance were analyzed. The electronic search was performed on Web of Science, Scopus, Sport Discus, PubMed, and Medline. All articles using a supplementation protocol with these amino acids, separately or in groups, were selected.
Results:
a total of 38 articles were found, which were stratified according to the established protocol: a) supplementation with L-arg (n = 19); b) supplementation with L-arg and L-citr (n = 1); and c) supplementation with L-citr (n = 18), whether of short or prolonged duration.
Conclusion:
there is evidence that L-citr works better as ergogenic than L-arg does on physical performance, since L-citr showed a positive effect on the rate of perceived exertion and muscular pain, in addition to a decrease in lactate concentrations and time in maximum tests. However, there is not enough evidence to establish a beneficial L-citr dosage for physical performance.
Palabras clave : Amino acids; Ergogenic effects; Sports performance.