Figure 2From: Substantial and reversible brain gray matter reduction but no acute brain lesions in ultramarathon runners: experience from the TransEurope-FootRace Project Mean global gray matter (GM) volume of the participating group of TransEurope-FootRace 2009 (TEFR09) athletes. Error bars denote standard deviation; asterisks show statistically significant differences from baseline (timepoint 1).Back to article page