Table 2 The level of baseline-subtracted 4 h post-intake change (4 h dAUC) in thermogenic response, respiratory quotient and haemodynamics in 12 young men (mean±s.e.)a

From: The effect of caffeine, green tea and tyrosine on thermogenesis and energy intake

  Green tea Tyrosine Caffeine Placebo
Thermogenesis, kJ 33±20 50±22 100±25b 28±22
Respiratory quotient 0.01±0.02 0.04±0.03 −0.02±0.02 −0.01±0.03
Systolic blood pressure, mm Hg 0.8±5.6 −8.6±7.8 2.9±7.8 9.0±4.8
Diastolic blood pressure, mm Hg −1.8±5.7 −1.9±2.7 1.9±4.2 −5.9±3.7
Heart rate, bpm −376±287 −50±223 157±294 −40±355
  1. Abbreviation: AUC, area under the curve.
  2. Data were analysed by analysis of variance (mixed linear models).
  3. bThe 4 h thermogenic response of caffeine was significantly different from placebo (P<0.0001).