This article was first published as a preprint. Christiansen D, Eibye KH, Rasmussen V, Voldbye HM, Thomassen M, Nyberg M, Gunnarsson TGP, Skovgaard C, Lindskrog MS, Bishop DJ, Hostrup M, Bangsbo J. 2018. Cycling with blood flow restriction improves performance and muscle K+ regulation and blunts the effect of antioxidant infusion in humans. bioRxiv. https://doi.org/10.1101/375881.