Intense physical training decreases circulating antioxidants and endothelium-dependant vasodilatation in vivo. - Bergholm,R.; Makimattila,S.; Valkonen,M.; Liu,M.L.; Lahdenpera,S.; Taskinen,M.R.; Sovijarvi,A.; Malmberg,P.; Yki-Jarvinen,H. (Atherosclerosis, 1999)