The Effects of High-Dose Glutamine Ingestion on Weightlifting Performance
The Journal of Strength and Conditioning Research: Vol. 16, No. 1, pp. 157–160.
Sports Science Laboratory, University of Delaware, Newark, Delaware 19716
DOUGLAS KALMAN

Peak Wellness, Greenwich, Connecticut 06830

ABSTRACT

The purpose of this study was to determine if high-dose glutamine ingestion affected weightlifting performance. In a double-blind, placebo-controlled, crossover study, 6 resistance-trained men (mean ± SE: age, 21.5 ± 0.3 years; weight, 76.5 ± 2.8 kg−1) performed weightlifting exercises after the ingestion of glutamine or glycine (0.3 g·kg−1) mixed with calorie-free fruit juice or placebo (calorie-free fruit juice only). Each subject underwent each of the 3 treatments in a randomized order. One hour after ingestion, subjects performed 4 total sets of exercise to momentary muscular failure (2 sets of leg presses at 200% of body weight, 2 sets of bench presses at 100% of body weight). There were no differences in the average number of maximal repetitions performed in the leg press or bench press exercises among the 3 groups. These data indicate that the short-term ingestion of glutamine does not enhance weightlifting performance in resistance-trained men.

Reference Data:Antonio, J., M.S. Sanders, D. Kalman, D. Woodgate, and C. Street. The effects of high-dose glutamine ingestion on weightlifting performance.