Effect of green tea on resting energy expenditure and substrate oxidation during weight loss in overweight females. Clin Sci (Lond) 89, 475–480.ĭiepvens K, Kovacs EM, Nijs IM, Vogels N, Westerterp-Plantenga MS (2005). Effect of acute and chronic caffeine use on the cerebrovascular, cardiovascular and hormonal responses to orthostasis in healthy volunteers. Am J Physiol 269, E671–E678.ĭebrah K, Haigh R, Sherwin R, Murphy J, Kerr D (1995). Effects of caffeine on energy metabolism, heart rate, and methylxanthine metabolism in lean and obese women. J Med Chem 18, 120–122.īracco D, Ferrarra JM, Arnaud MJ, Jequier E, Schutz Y (1995). Structure–activity relationships for inhibition by flavonoids. Effects of encapsulated green tea and Guarana extracts containing a mixture of epigallocatechin-3-gallate and caffeine on 24 h energy expenditure and fat oxidation in men. Am J Clin Nutr 51, 759–767.īerube-Parent S, Pelletier C, Dore J, Tremblay A (2005). Caffeine: a double-blind, placebo-controlled study of its thermogenic, metabolic, and cardiovascular effects in healthy volunteers. Metabolism 40, 323–329.Īstrup A, Toubro S, Cannon S, Hein P, Breum L, Madsen J (1990). Thermogenic synergism between ephedrine and caffeine in healthy volunteers: a double-blind, placebo-controlled study. Int J Obes Relat Metab Disord 16, 269–277.Īstrup A, Toubro S, Cannon S, Hein P, Madsen J (1991). The effect and safety of an ephedrine/caffeine compound compared to ephedrine, caffeine and placebo in obese subjects on an energy restricted diet.
Int J Obes Relat Metab Disord 17 (Suppl 1), S41–S43.Īstrup A, Breum L, Toubro S, Hein P, Quaade F (1992). Thermogenic, metabolic, and cardiovascular responses to ephedrine and caffeine in man. Effects of caffeine ingestion on NE kinetics, fat oxidation, and energy expenditure in younger and older men. Eur J Clin Nutr 52, 805–812.Īrciero PJ, Gardner AW, Calles-Escandon J, Benowitz NL, Poehlman ET (1995). Relationship of blood pressure, heart rate and behavioral mood state to norepinephrine kinetics in younger and older men following caffeine ingestion. Am J Clin Nutr 33, 989–997.Īrciero PJ, Gardner AW, Benowitz NL, Poehlman ET (1998). Caffeine and coffee: their influence on metabolic rate and substrate utilization in normal weight and obese individuals. Further investigations are required.Īcheson KJ, Zahorska-Markiewicz B, Pittet P, Anantharaman K, Jequier E (1980). The sample size was probably too small to detect any appetite suppressant properties of the treatments. Only caffeine was thermogenic in the given dose and caused no haemodynamic side effects. No significant difference in haemodynamics was observed between treatments. Ad libitum EI was not significantly different between treatments but was reduced by 8% (−403☑83 kJ), 8% (−400☓35 kJ) and 3% (−151☓77 kJ) compared to placebo after intake of tyrosine, GTE and caffeine, respectively. Tyrosine tended to increase 4-h respiratory quotient by 1% compared to placebo (0.01☐.005, P=0.05). The thermogenic responses to GTE and tyrosine were not significantly different from placebo. Results:Ĭaffeine induced a thermogenic response of 6% above baseline value (72☒5 kJ per 4 h, mean±s.e.) compared to placebo ( P<0.0001). Blood pressure, heart rate (HR), and subjective appetite sensations were assessed hourly and ad libitum EI 4 h post-dose. The acute thermogenic response was measured in a ventilated hood system for 4 h following ingestion. Treatments were administered as tablets of 500 mg GTE, 400 mg tyrosine, 50 mg caffeine, or placebo, and were separated by >3-day washout. Twelve healthy, normal weight men (age: 23.7☒.6 years, mean±s.d.) participated in a four-way crossover, randomized, placebo-controlled, double-blind study. To investigate the effect of three different food ingredients tyrosine, green tea extract (GTE) and caffeine on resting metabolic rate and haemodynamics, and on ad libitum energy intake (EI) and appetite.
0 kommentar(er)
