borderline significantP = 0.075
We cannot fully explain the delayed plasma increase of creatinine, and the lack of an immediate post-exercise increase – even though borderline significant ( P = 0.075)—is in contrast to results from previous studies in runners completing a marathon race (McCullough et al., 2011 ; Trivax et al., 2010 ) or to runners completing a 100 km race (Kao et al., in press ).