Effect of L-Glutamine Supplementation on Electromyographic Activity of the Quadriceps Muscle Injured By Eccentric Exercise

Authors

1 Department of Exercise Physiology Faculty of Physical Education and Sport Science, University of Guilan, Rasht, Iran

2 Departments of Physical Education and Sport Sciences, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

Abstract

 

Objective(s):
The purpose of the present study was to examine the effects of L-glutamine on electromyographic (EMG) activity of the quadriceps muscle injured by eccentric exercise (EE).
 
Materials and Methods:
Seventeen healthy men (age: 22.35±2.27 yr; body mass: 69.91±9.78 kg; height: 177.08±4.32 cm) were randomly and double-blind study with subjects assigned to either an L-glutamine supplementation (n=9) or placebo (n=8) group. The subjects in two groups were asked to take three times during a week for 4 weeks. Each subject was screened for dietary habits before inclusion into the study. Participants performed 6 set to exhaustion eccentric leg extensions at 75% of 1RM and rest intervals were 3 min among sets. Pain Assessment Scale (PAS), EMG activity and range of motion (ROM) measurements were taken before exercise protocol and 24 and 48 hr afterwards.
Results:
There was no statistically significant difference between groups in perceived muscle soreness (SOR), ROM and EMG activity (P < 0.05).
Conclusion:
The results indicate that L-glutamine supplementation has no significant effect on muscle injury markers in between groups, although glutamine supplementation attenuated delayed onset muscle soreness (DOMS) effects in sup group.

Keywords

References

1.
O’Reilly K, Warhol M, Fielding R, Frontera W, Meredith C, Evans W.Eccentric exercise-induced muscle damage impairs muscle glycogen repletion. J Appl Physiol 1987; 63:252–
6.
2. Waddell D Fredricks K. Effects of a Glutamine Supplement on the Skeletal Muscle Contractile Force of Mice. Am J Undergraduate Res 2005; 4:11-8.
 
3. Lowery L
 
 
و
Forsythe CE. Protein and overtraining: potential applications for free-living athletes. J Int Soc Sports Nutr 2006; 3:42-50.
4. Cruzat VF, Rogero MM, Tirapegui J. Effects of supplementation with free glutamine and the dipeptide alanyl-glutamine on parameters of muscle damage and
 
 
inflammation in rats submitted to prolonged exercise. J
Cell Biochem Funct 2010; 28:24-30.
5. Babij P, Mattews SM, Rennie MJ. Changes in blood ammonina, lactate, and amino acids in relation to workload during bicycle ergometer exercise in man. Eur J Appl Physiol 1983; 50:405-11.
 
6. Newsholme EA. Why is L-glutamine metabolism important to cells of the immune system in health, post-injury, surgery, or infection. J Nutr 2001; 131:2515-2522.
 
7. Clarkson P, Hubal M. Exercise-induced muscle damage in humans. Am J Phys Med Rehabil 2002; 81:52-69.
 
8. Low SY, Taylor PM, Rennie MJ. Response of glutamine transport in cultured rat skeletal muscle to osmotically induced changes in cell volume. J Physiol 1996; 492:877-85.
 
9. Miura H, Araki H, Matoba H, Kitagawa K. Relationship among oxygenation, myoelectric activity, and lactic acid accumulation in vastus lateralis muscle during exercise with constant work rate. Int J Sports Med 2000; 21:180-4.
 
10. Merletti R, Lo Conte L. Sathyan D. repeatability of electrically-evokedMyoelectric signals in the human tibialis anterior muscle. J Electromyogr Kinesiol 1995; 5:67-80.
 
11. Zhou Y, Li Y, Wang R. Evaluation of exercise-induced muscle damage by surface electromyography. J Electromyogr Kinesiol 2011; 21:356-62.
 
12. Stock MS, Young JC, Golding LA, Kruskall LJ, Tandy RD, JM Conway-Klaassen
 
 
et al. The Effects of adding leucine to pre and postexercise carbohydrate beverages on aute muscle recovery from resistance training. J Strength Cond Res 2010; 24:2211–
19.
13. Linnamo V, Bottas R, Komi PV. Force and EMG power spectrum during and after eccentric and concentric fatigue. J Electromyogr Kinesiol 2000; 10:293-300.
 
14. Proske U, Morgan DL. Muscle damage from eccentric exercise: mechanism, mechanical signs, adaptation and clinical applications. J Physiol 2001; 537.2:333
 
 
–
45.
15. Tartibian B, Hajizadeh Maleki B, Abbasi A. The effects of ingestion of omega-3 fatty acids on perceived pain and external sympyoms of delayed onset muscle soreness in untrained men. Clin J Sport Med 2009; 19:2.
 
16. Kraemer WJ. Physiological adaptation to anaerobic and aerobic endurance training programs. In: Baechle TR, Earle RW. editors. Essentials of strength training and conditioning. 2nd ed. Human Kinetics, champaign, III: 2000.p.137-68.
 
17. Chen TC. Effects of a second bout of maximal eccentric exercise on muscle damage and electromyographic activity. Eur J Appl Physiol 2003; 89:115
 
 
–
21.
 

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