Examination of a pre-exercise, high energy supplement on exercise performance
Jay R Hoffman, Jie Kang, Nicholas A Ratamess, Mattan W Hoffman, Christopher P Tranchina, and Avery D Faigenbaum
J Int Soc Sports Nutr. 2009; 6: 2. Published online 2009 January 6. doi: 10.1186/1550-2783-6-2.PMCID: PMC2621122