an investigation was made into the effects of conditioned running ( 1 h and 2 h at 20 m min-1 ) , which accelerates lipolysis , on the concentrations of tryptophan ( trp ) in plasma , liver and brain and on 5-hydroxytrptamine ( 5-ht ) and 5-hydroxyindoleacetic acid ( 5-hiaa ) levels in brain .
C0086045
concentrations
C0006104
brain