Darin J. Falk,1 Kate A. Heelan,2 John P. Thyfault,3 and Alex J. Koch4
1Department of Exercise and Sport Sciences, College of Health and Human Performance, University of Florida, Grainesville, Florida 32611; 2Human Performance Laboratory, Department of Health, Physical Education, Recreation, and Leisure Studies, University of Nebraska at Kearney, Kearney, Nebraska; 3Department of Physiology, Brody School of Medicine, East Carolina University, Greenville, North Carolina 27858; 4Department of Health and Exercise Sciences, Truman State University, Kirksville, Missouri 63501
The purpose of this study was to examine the effects of a combination of effervescent creatine, ribose, and glutamine on muscular strength (MS), muscular endurance (ME) and body composition (BC) in resistance-trained men. Subjects were 28 men (age: 22.3 ± 1.7 years; weight: 85.8 ± 12.1 kg; height: 1.8 ± 0.1 m) who had 2 or more years of resistance-training experience. A double blind, randomized trial was completed involving supplementation or placebo control and a progressive resistance-training program for 8 weeks. Dependent measures were assessed at baseline and after 8 weeks of resistance training. Both groups significantly improved MS and ME while the supplement group significantly increased body weight and fat-free mass. Control decreased body fat and increased fat-free mass. This study demonstrated that the supplement group did not enhance MS, ME, or BC significantly more than control after an 8-week resistance-training program.