The effects of glutamine supplementation on performance and hormonal responses in non-athlete male students during eight week resistance training


  • Mehdi Hakimi Islamic Azad University Marivan Branch, Iran, Islamic Republic of
  • Maryam Ali Mohamadi University of Kurdistan, Iran, Islamic Republic of
  • Zoleikha Ghaderi University of Tehran Payam Noor, Iran, Islamic Republic of



Glutamine supplementation, Resistance training, Hormonal changes


The aim of this study was to determine the effects of glutamine supplementation on performance, and hormonal changes during an 8-week resistance training program in non athlete male students. Thirty healthy non athlete male (age 21.25 ± 1.6 years, height 173.2 ± 3.2 cm, body mass 72.8 ± 2.8 kg, VO2max 43.48± 2.38 ml·kg-1·min-1) were randomly divided into a glutamine supplementation (GL) group (n=15), and a placebo (PL) group (n=15). Each group was given either glutamine or a placebo in a double blind manner to be taken orally for eight weeks (0.35 g/kg/day). GL and PL groups performed the same weight training program 3 days, each week for 8 weeks. The training consisted of 3 sets of 8 repetitions, and the initial weight was 80% of the pre-1RM. Subjects were tested for performance and blood hormone concentrations before and after the 8-week period. Both groups increased their performance however the GL group showed significantly greater increases in upper and lower body strength, explosive muscular power, blood testosterone, GH and IGF-1 when compared to the PL group; however, cortisol concentrations were significantly more reduced in GL group when compared to the PL group. It can, therefore, be concluded that within 8 weeks glutamine supplementation during resistance training was found to increase performance (explosive muscular power, muscle strength) and improved body composition (increased body mass, fat-free mass and reduced body fat).


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How to Cite

Hakimi, M., Mohamadi, M. A., & Ghaderi, Z. (2012). The effects of glutamine supplementation on performance and hormonal responses in non-athlete male students during eight week resistance training. Journal of Human Sport and Exercise, 7(4), 770–782.