Supplementation with NAC also augmented postexercise plasma total antioxidant capacity ( P = 0.005 , p = 0.19 ) , reduced exercise-induced oxidative damage ( plasma thiobarbituric acid-reactive substances , P = 0.002 , p = 0.22 ; urinary 15-isoprostane F2t concentration , P = 0.010 , p = 0.431 ) , attenuated inflammation ( plasma interleukin 6 , P = 0.002 , p = 0.22 ; monocyte chemotactic protein 1 , P = 0.012 , p = 0.17 ) , and increased postexercise nuclear factor B activity ( P < 0.001 , p = 0.21 ) .