RT info:eu-repo/semantics/article T1 Effects of citrulline supplementation on different aerobic exercise performance outcomes: A systematic review and meta-analysis A1 Viribay, Aitor A1 Fernández Lázaro, Diego A1 Fernández Landa, Julen A1 Castañeda Babarro, Arkaitz A1 Sánchez Collado, Pilar A1 Mielgo Ayuso, Juan Francisco K1 Nutrition K1 Sports - Physiological aspects K1 Athletes - Nutrition K1 Atletas - Nutrición K1 Food additives K1 Aditivos alimentarios K1 Nutrición - Alimentos K1 Dietetics K1 Nitric oxide K1 Oxido nitrico K1 Exercise K1 Ejercicio físico K1 Endurance sports K1 Deportes de resistencia K1 Meta-analysis K1 Citrulline K1 Citrulina K1 3104.06 Nutrición K1 2411.06 Fisiología del Ejercicio AB Supplementation with Citrulline (Cit) has been shown to have a positive impact on aerobic exercise performance and related outcomes such as lactate, oxygen uptake (VO2) kinetics, and the rate of perceived exertion (RPE), probably due to its relationship to endogenous nitric oxide production. However, current research has shown this to be controversial. The main objective of this systematic review and meta-analysis was to analyze and assess the effects of Cit supplementation on aerobic exercise performance and related outcomes, as well as to show the most suitable doses and timing of ingestion. A structured literature search was carried out by the PRISMA® (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) and PICOS guidelines in the following databases: Pubmed/Medline, Scopus, and Web of Science (WOS). A total of 10 studies were included in the analysis, all of which exclusively compared the effects of Cit supplementation with those of a placebo group on aerobic performance, lactate, VO2, and the RPE. Those articles that used other supplements and measured other outcomes were excluded. The meta-analysis was carried out using Hedges’ g random effects model and pooled standardized mean differences (SMD). The results showed no positive effects of Cit supplementation on aerobic performance (pooled SMD = 0.15; 95% CI (−0.02 to 0.32); I2, 0%; p = 0.08), the RPE (pooled SMD = −0.03; 95% CI (−0.43 to 0.38); I2, 49%; p = 0.9), VO2 kinetics (pooled SMD = 0.01; 95% CI (−0.16 to 0.17); I2, 0%; p = 0.94), and lactate (pooled SMD = 0.25; 95% CI (−0.10 to 0.59); I2, 0%; p = 0.16). In conclusion, Cit supplementation did not prove to have any benefits for aerobic exercise performance and related outcomes. Where chronic protocols seemed to show a positive tendency, more studies in the field are needed to better understand the effects. PB MDPI SN 2072-6643 YR 2022 FD 2022 LK https://uvadoc.uva.es/handle/10324/61151 UL https://uvadoc.uva.es/handle/10324/61151 LA eng NO Nutrients, 2022, Vol. 14, Nº. 17, 3479 NO Producción Científica DS UVaDOC RD 27-dic-2024