Plasma variables
Plasma caffeine (a) and carnitine (b) concentrations are displayed in Figure Plasma caffeine (a) and free carnitine (b) concentrations at baseline (i.e., 0 min) and throughout 5 h primed and continuous intravenous infusions of saline (CAFF) or Plasma carnitine concentrations were also comparable across conditions at baseline (52 ± 14, 55 ± 11, and 48 ± 11 μmol·L