RT info:eu-repo/semantics/article T1 Influence of N-acetylcysteine supplementation on physical performance and laboratory biomarkers in adult males: A systematic review of controlled trials A1 Fernández Lázaro, Diego A1 Domínguez Ortega, Carlos A1 Busto, Natalia A1 Santamaría Peláez, Mirian A1 Roche Collado, Enrique A1 Gutiérrez Abejón, Eduardo A1 Mielgo Ayuso, Juan Francisco K1 Pharmacology K1 N-acetylcysteine K1 Sports K1 Deporte K1 Nutritional supplements K1 Supplementation K1 Physical activity K1 Ejercicio fisico K1 Oxidative stress. K1 Estrés oxidativo K1 Antioxidants K1 Antioxidantes K1 Biomarkers K1 3209 Farmacología K1 3206 Ciencias de la Nutrición K1 3309.12 Aditivos Alimentarios K1 3309.03 Antioxidantes en Los Alimentos AB N-acetylcysteine (NAC) is used as a sports supplement for its ability to modulate exercise-induced oxidative damage through its antioxidant actions and maintenance of glutathione homeostasis, positioning NAC as a strategy to improve physical performance. We aimed to evaluate the current evidence on the benefits of NAC supplementation on physical performance and laboratory biomarkers in adult men. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we systematically reviewed studies indexed in the Web of Science, Scopus, and PubMed to assess the effects of NAC on physical performance, laboratory biomarkers, and adverse effects in adult men. Original articles published up to 30 April 2023 with a controlled trial design comparing NAC supplementation with a control group were included. The modified McMaster Critical Review Form for Quantitative Studies was used as an assessment tool and the Cochrane Risk of Bias was applied. Of the 777 records identified in the search, 16 studies met the inclusion and exclusion criteria. Overall, most of the trials reported beneficial effects of NAC supplementation and no serious adverse events were reported. Participants supplemented with NAC showed significant improvements in exercise performance, antioxidant capacity, and glutathione homeostasis. However, there was no clear evidence of beneficial effects of NAC supplementation on haematological markers, inflammatory response, and muscle behaviour. NAC supplementation appears to be safe and may regulate glutathione homeostasis, have antioxidant effects, and improve exercise performance. However, further studies are needed to clarify the relevance of its use. PB MDPI SN 2072-6643 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/65590 UL https://uvadoc.uva.es/handle/10324/65590 LA eng NO Nutrients, 2023, Vol. 15, Nº. 11, 2463 NO Producción Científica DS UVaDOC RD 28-dic-2024