Table 1. Pearson correlations between participants’ blood markers (n = 19) at baseline. BMI TRP KYN KYN/TRP Tcytotox Treg VO2max -.659** -.601** -.278 .454 .287 .689*** TRP .716*** -.427 .017 -.293 KYN .325 .252 -.109 KYN/TRP .304 .257 Tcytotox .673*** *** p<0.001 ** p<0.01; BMI: Body Mass Index; KYN: kynurenine; TRP: tryptophan; Tcytotox: cytotoxic T cells; Treg: regulatory T cells. VO2max: maximal oxygen uptake.