The Effect of FourWeeks of Beta-Alanine Supplementationon Anaerobic Power and Plasma Lactate Level in Unprofessional Male Bodybuilders

Abstract

The aim of current study was to investigate the effect of four weeks of beta-alanine supplementation on anaerobic power and plasma lactate level of unprofessional male bodybuilders. For this purpose, the study plan was performed as pretest-posttest with control group and as one blind trial. 20 mature and unprofessional athletes were randomly divided into two groups of 10 people including supplement and placebo (supplement group: 25±0.81 years old, weight 82.10kg±4.78 kg and BMI 24.34±2.19kg/m² and placebo group: 24.40± 1.07 years old, weight 80.60±5.85 kg and BMI 23.34±1.16 kg/m²). Within experimental period of four weeks, the subjects of supplement group received six mg daily beta-alanine supplement for five days a weeks and the subjects of placebo group received placebo to the same dosage (Aspartate Flavor Powder). Both groups also participated in four weeks of bodybuilding exercises, designed by the researcher. As pretest and posttest, the subjects of both groups participated in anaerobic test of RAST respectively in one day before and after finishing experimental period to evaluate the indicators of anaerobic power and to measure blood lactate levels. Blood samples were taken from them immediately after RAST test. To analyze data, dependent t-test as well as two-way covariance analysis test was used. Statistical operations were checked in significance level of P≤0.05 and then the following results were obtained: compared to placebo group, four weeks of beta-alanine supplementation led to significant improvement of anaerobic peak power and fatigue index of subjects (P≤0.05) but it didn’t have any significant effect on average anaerobic power and plasma lactate level following one session of intense anaerobic activity. Since, increased anaerobic peak power and reduced fatigue can indicate improvement of subjects’ anaerobic power, it can be concluded that this type of supplementation has caused improvement of participants’ anaerobic power.

Keywords

• Beta-Alanine Supplementation,Unprofessional Bodybuilder,Anaerobic Power

References

1. Bellinger M Phillip (2014). Βeta-Alanine Supplementation for Athletic Performance: An Update. Journal of Strength and Conditioning Research. 28(6):1751–1770, JUN. Int J Sport Nutr Exerc Metab. 2014 Feb;24(1):14-27. doi: 10.1123/ijsnem.2013-0007. Epub Aug 5.
2. Camic CL, Housh TJ, Zuniga JM, Hendrix RC, Mielke M, Johnson GO (2010) Effects of arginine-based supplements on the physical working capacity at the fatigue threshold. J Strength Cond Res. May; 24(5):1306-12.
3. Derave W, Ozdemir MS, Harris RC, Pottier A, Reyngoudt H, Koppo K, Wise JA, Achten E (2007). Beta-Alanine supplementation augments muscle carnosine content and attenuates fatigue during repeated isokinetic contraction bouts in trained sprinters. J Appl Physiol (1985). 103(5): p. 1736-43.
4. Eslamdust M, Bazgir B, Kowsari E, Rahimi A, Sarshin A, Naghibie S (2015). The effects of short term β-alanine supplementation on blood lactate concentration of young male athletes. EBNESINA- Journal of Medical.16 (4) :33-38
5. Hill CA, Harris RC, Kim HJ, Harris BD, Sale C, Boobis LH, Kim CK, Wise J (2007). A Influence of beta-alanine supplementation on skeletal muscle carnosine concentrations and high intensity cycling capacity. Amino Acids 32: 225–33.
6. Hobson RM, Saunders B, Ball G, Harris RC, Sale C (2012). Effects of β-alanine supplementation on exercise performance: a meta-analysis. Amino Acids. Jul; 43(1):25-37. doi: 10.1007/s00726-011-1200-z. Epub Jan 24.
7. Hoffman R Jay, Stout R, Falvo J, Kang M, Ratamess J N A (2005). “Effect of low dose short duration creatine supplementation on anaerobic exercise performance”. J. Strength Cond. Res. 19(2): PP: 260-4
8. Hoffman R Jay, Stout R Jeffrey, Harris C Roger, Moran S Daniel (2015). β -alanine supplementation improves tactical performance but not cognitive function in combat soldiers. J Int Soc Sports Nutr,A. 11(1): p. 15.

9. Jordan T G, Gray M, Stewart R, Moyen NE, Kavouras SA, DiBrezzo R, Turner R, Baum J (2015). Effects of Acute Beta-Alanine Supplementation on Anaerobic Performance in Trained Female Cyclists. J Nutr Sci Vitaminol (Tokyo) 61 (2), 161-166.
10. Jordan T G, Lukaszuk J, Misic M, Umoren J (2010). Effect of beta-alanine supplementation on the onset of blood lactate accumulation (OBLA) during treadmill running: Pre/post 2 treatment experimental design. [(Accessed on 1 June 2012)]; Int. Soc. Sports Nutr. 7 doi: 10.1186/1550-2783-7-20.
11. Kern BD and Robinson T L (2011). Effects of β-alanine supplementation on performance and body composition in collegiate wrestlers and football players. The Journal of Strength & Conditioning Research, 25(7): p. 1804-1815.
12. Mogus, Veslis (2006). Sport Biochemistry, Translated by Rahnama, Norouzi et al, Third Edition (2012), Isfahan, Isfahan University Publications. P: 267-296 and 475-480.
13. Quesnele J J, Laframboise M A, Wong J J, Kim P, Wells G D (2013). The effects of beta-alanine supplementation on performance: a systematic review of the literature Volume: 24 Issue: 1 Pages: 14-27 doi: 10.1123/ijsnem.2013-0007.
14. Sale C, Hill C A, Ponte J, Harris R C (2012). Β-Alanine Supplementation Improves Isometric Endurance of the Knee Extensor Muscles. J. Int. Soc. Sports Nutr. 9: 26.
15. Schwarts S E, Fernhall B & Plowman S A (1990). “Effects of music on exercise performance”. Journal of cardiopulmonary Rehabilitation, 10, PP: 312.
16. Stegen S, Bex T, Vervaet C, Vanhee L, Achten E, Derave W(2014). The Beta-Alanine Dose for Maintaining Moderately Elevated Muscle Carnosine Levels. Med. Sci. Sports Exerc.
17. Stout J R, Graves B S, Smith A E, Hartman M J, Cramer J T, Beck T W, Harris R C (2008). The effect of beta-alanine supplementation on neuromuscular fatigue in elderly (55-92 Years): a double-blind randomized study. J. Int. Soc. Sports Nutr. 5: 21.
18. Suzuki Y, Ito O, Mukai N, Takahashi H, Takamatsu K (2002). High level of skeletal muscle carnosine contributes to the latter half of exercise performance during 30-s maximal cycle ergometer sprinting. [Online]. Jpn. J. Physiol. 52: 199–205.