Caffeine, Creatine Lead to Ergogenic Benefits
LUTON, England--Researchers at the University of Luton, England, investigated the effects of concurrent use of caffeine with creatine supplementation. Appearing in the November issue of Medicine & Science in Sports & Exercise (34, 11:1785-92, 2002) (www.ms-se.com), the study included 14 trained male subjects who ran on a treadmill. Three trials were performed: one before six days of creatine loading (0.3 g/kg/d) and two other trials following the loading period. One hour before the postloading trials, 5 mg/kg of caffeine or a placebo were taken in a crossover, double blind manner.
Body mass increased over the creatine supplementation period, and it was maintained for both the caffeine and placebo trials. However, oxygen intake increased more in the caffeine trial compared to the placebo one. Researchers, led by Mike Doherty, concluded acute caffeine ingestion was found to be ergogenic (characterized by increased work capacity) compared to creatine supplementation alone.