%0 Journal Article %T Acute effects of ingesting a commercial thermogenic drink on changes in energy expenditure and markers of lipolysis %A Vincent J Dalbo %A Michael D Roberts %A Jeffrey R Stout %A Chad M Kerksick %J Journal of the International Society of Sports Nutrition %D 2008 %I BioMed Central %R 10.1186/1550-2783-5-6 %X Healthy college-aged male (23.2 ¡À 4.0 y, 177.2 ¡À 6.1 cm, 81.7 ¡À 11.3 kg, 22.8 ¡À 7.3 % fat; n = 30) and female (23.4 ¡À 3.1 y, 165.6 ¡À 8.7 cm, 62.1 ¡À 9.9 kg, 28.3 ¡À 7.4 % fat; n = 30) participants were matched according to height and weight to consume 336 ml of the TD or a non-caloric, non-caffeinated placebo (PLA). After a 12 h fast, participants reported for pre-consumption measures of height, weight, heart rate, blood pressure, resting energy expenditure (REE), respiratory exchange ratio (RER), glycerol and free-fatty acid (FFA) concentrations. REE and RER were determined at 60, 120, and 180 min post-consumption. Serum glycerol and FFA concentrations were determined at 30, 60, 120 and 180 min post-consumption.When compared to PLA, TD significantly increased REE at 60, 120 and 180 min (p < 0.05). FFA concentrations were significantly greater in TD compared to PLA at 30, 60, 120 and 180 min post-consumption (p < 0.05). No between-group differences were found in RER.Acute TD ingestion significantly increased REE, FFA and glycerol appearance. If sustained, these changes may help to promote weight loss and improve body composition; however, these findings are currently unknown as are the general safety and efficacy of prolonged consumption.The prevalence of individuals who are classified as overweight and obese is a primary health concern due to their relationship to various cardiovascular diseases [1,2] and associated comorbidities [1]. Recent epidemiological data suggests that 31% of the United States (U.S.) population is classified as obese, according to body mass index (BMI) standards, while 65% is classified as overweight [3]. Medical expenses for obesity treatment and its related comorbities in 1998 accounted for 9.1% of total medical expenditures and was reported to be $78.5 billion, which would exceed $100 billion in today's economy [4]. In addition to reducing medical costs, weight loss can reduce risk for cardiovascular disease, improve quality of life and eas %U http://www.jissn.com/content/5/1/6