Those who exercise to lose weight often wonder whether it’s better to eat or fast before a workout. A new study published in the American Journal of Physiology — Endocrinology and Metabolism is the first of its kind to show the effects of eating versus fasting on gene expression in fat tissue in response to exercise. This study highlights the different roles fat plays in powering and responding to exercise and seems to suggest that, if you want to lose weight exercising, better not to each before exercising.Researchers from the University of Bath in the U.K. studied a group of overweight males. The volunteers walked for 60 minutes at 60 percent maximum oxygen consumption on an empty stomach in one experiment and two hours after consuming a high-calorie carbohydrate-rich breakfast in a comparison experiment. The research team took multiple blood samples after eating or fasting and after exercising. The researchers also collected fat tissue samples immediately before and one hour after walking. Researchers found that gene expression in the fat tissue differed significantly in the two trials. Specifically, the expression of two genes, PDK4 and HSL, increased when the men fasted and exercised and decreased when they ate before exercising. The rise in PDK4 gene likely indicates that stored fat was burned and used to fuel the exercise instead of carbohydrates from the recent meal. The rise of HSL gene usually happens when fat tissue uses stored energy to support increased activity during exercise. These results reinforce the view that fat tissue is primarily an energy storage mechanism in human body and carbohydrate is the preferred energy source. When carbohydrate is available as a fuel, stored fat is less likely to be used during exercise. This means that exercise in a fasted state might promote burning of fat tissue, which could lead to weight loss and other health benefits in the long term. Thanks for reading. Journal Reference: Yung-Chih Chen, et al. FEEDING INFLUENCES ADIPOSE TISSUE RESPONSES TO EXERCISE IN OVERWEIGHT MEN. American Journal of Physiology – Endocrinology And Metabolism, 2017; ajpendo.00006.2017 DOI: 10.1152/ajpendo.00006.2017 About SGC:SGC is an R&D focused developer of nutraceutical and pharmaceutical gummy products. The company specializes in formulating Functional Gummy® products combining the wealth of the in-house knowledge in pharmaceutics, chemistry, western medicine and herbal medicine. The company provides performance gummies® inspired by Traditional Chinese Medicine including MOCCA SHOTS™, ENERGON QUBE™, FUNTIONAL FRUIT®, and SEATTLE BEAUTY®. To learn more, visit https://seattlegummy.com, [email protected],call 206-257-0464, or join at https://seattlegummy.com/be-an-informed-member/.