Effect of Dietary Supplement Containing Kaempferia parviflora Extract,
Mulberry Leaf Extract, Green Tea Extract, Chitosan, Gymnemic Acid and Kidney Bean Extract on Energy Expenditure and Fat Oxidation by the Single Oral Intake
|A Randomized, Double-blind, Placebo-controlled, Cross-over Study|

Objective@The study aimed to verify that ingestion of dietary supplement containing Kaempferia parviflora extract, mulberry leaf extract, green tea extract, chitosan, gymnemic acid and kidney bean extract would increase energy expenditure and fat oxidation of subjects.
Methods@A randomized, double-blind, placebo-controlled, cross-over study was conducted for 34 participants who ingested the dietary supplement containing 150 mg of Kaempferia parviflora extracti2.25 mg of 3,5,7,3',4'-pentamethoxyflavonej, 200 mg of mulberry leaf extract, 200 mg of green tea extracti14 mg of epigallocatechin gallatej, 100 mg of chitosan, 9.4 mg of gymnemic acid and 4.8 mg of kidney bean extract or placebo. The test foodsidietary supplement or placebojwere ingested to subjects 60 minutes before starting of the exercise. The respiratory metabolism was measured at resti10 minutesjand followed by low intensity exercisei30 minutesj.
Results@The energy expenditure was not significantly different between dietary supplement and placebo during exerciseimean}SEF3469.50}36.21 cal/min for the dietary supplement intake vs. 3475.37}35.58 cal/min for the placebo intakeGP0.78j. Whereas, intake of dietary supplement significantly increased the fat oxidation compared to that of placebo during exercisei122.93}9.41 mg/min for the dietary supplement intake vs. 104.78}9.68 mg/min for the placebo intakeGPƒ0.05j.
Conclusions@These results suggest that the dietary supplement increased fat utilization for energy expenditure under low intensity exercise condition.