Figure 5
Caffeine but not theobromine plasma levels correlate with FMD changes after green tea consumption. Plasma levels of caffeine and theobromine before and two hours after interventions (a). For comparison, the scale is identical for both compounds. Data are means ± SEM from n = 50 subjects for water, EGCG, and green tea and n = 49 for GTE. Significant positive correlations between plasma levels and changes in FMD after green tea consumption were obtained for caffeine, but not for theobromine (Spearman’s) (b). Data are from n = 50 subjects.
