Acute Ginger extract supplementation no increase the metabolism at the rest and during exercise

Abstract

This study evaluated the acute effect of ginger (Zingiber officinale) supplementation (3.0 g) on metabolism. For this, 12-male physically active college were measured (22.8±3.3 yrs.; 79.4±12.5 kg; 1.8±0.1 m; 25.4±3.0 kg/m²; 16.9±3.1 %BF). Three-hours after supplementation (ginger or placebo) (Baseline – lasting 30-min) the resting metabolic rate (RMR), oxygen uptake (VO₂), carbon dioxide production (VCO₂), respiratory quotient (RQ) protein (PRO), carbohydrate (CHO), and fat oxidation were measured. All participants then performed 30-min of aerobic exercise (75-85 % of reserve heart rate – RHR). Finally, the same post-exercise variables for 60-min were measured. For the measures performed at rest and after exercise were observed effect of the moment of measurement, where the measures obtained at post-exercise 1 exercise (0-30 min) were significative higher (p≤0.001 for RMR; VO2; VCO2; PRO and CHO; p=0.001 for RQ; p=0.03 for FAT) in comparison to rest and post-exercise 2 (30-60 min) moments. Similar results were observed at the exercise for VO2 (31.5±3.1 vs. 31.9±3.7 mL/kg/min; p=0.78) and ventilatory equivalents for oxygen (VE/VO2: 24.1±2.5 vs. 24.4±3.3; p=0.75) where no differences were observed between conditions. In conclusion, for the applied protocol, acute ginger extract supplementation produced no metabolic ergogenic effect.