All of these studies point to there being a higher fat
oxidation rate when caffeine is taken as a supplement (either naturally or synthetically).
Not exact matches
Even the very lean subjects had double the fat
oxidation rates on low carb versus
when they did the same exercise on their typical high carb diet.
In the study, the researchers had people consume coffee with a meal and found that the thermic effect of the meal (the increase in metabolic
rate that occurs after eating) increased dramatically
when taken with coffee — including fat
oxidation.