The Impact of Caffeine Supplementation on Muscular Strength and Endurance in Male Bodybuilders
محورهای موضوعی : Sport physiology
1 - Ph.D Student in Sports Physiology, Damghan Branch, Islamic Azad University, Damghan, Iran
کلید واژه: Caffeine, Male Athletes, Muscular Strength, Muscular Endurance, Tehran,
چکیده مقاله :
The aim of this study was to investigate the effect of caffeine supplementation on the strength and muscular endurance of female bodybuilders. The statistical population of this study consisted of active men in bodybuilding clubs in Tehran, of whom 15 were selected voluntarily, purposefully and conveniently as a sample and were randomly assigned to a control group, placebo group and supplement group at an interval of 3 days from each other in a crossover manner. They participated in one-repetition (1RM) maximum leg press tests to measure muscular strength and repetitions to exhaustion of leg press movements to measure muscular endurance. One-way analysis of variance test was used to analyze the data and examine the mean difference between the groups, and if significant, Bonferroni test was used. The results of the study showed that consuming 5 mg of caffeine supplementation per kilogram of body weight increased muscular strength and endurance in bodybuilders. As a result, it appears that caffeine consumption (5 mg per kilogram of body weight), which is approximately equivalent to 2 or 3 cups of coffee per day, can lead to increased maximal strength and muscular endurance in strength athletes.
The aim of this study was to investigate the effect of caffeine supplementation on the strength and muscular endurance of female bodybuilders. The statistical population of this study consisted of active men in bodybuilding clubs in Tehran, of whom 15 were selected voluntarily, purposefully and conveniently as a sample and were randomly assigned to a control group, placebo group and supplement group at an interval of 3 days from each other in a crossover manner. They participated in one-repetition (1RM) maximum leg press tests to measure muscular strength and repetitions to exhaustion of leg press movements to measure muscular endurance. One-way analysis of variance test was used to analyze the data and examine the mean difference between the groups, and if significant, Bonferroni test was used. The results of the study showed that consuming 5 mg of caffeine supplementation per kilogram of body weight increased muscular strength and endurance in bodybuilders. As a result, it appears that caffeine consumption (5 mg per kilogram of body weight), which is approximately equivalent to 2 or 3 cups of coffee per day, can lead to increased maximal strength and muscular endurance in strength athletes.
Berglung B, Hemmingsson P (1982) Effects of caffeine ingestion on exercise performance at low and high altitudes in cross-country skiers. International Journal of Sports Medicine.3, 234-236.
Bruce CR, Anderson ME, Fraser SF (2000) Enhancement of 2000-m rowing performance after caffeine ingestion. Medicine and Science in Sports Exercise. 32(6), 1399-1963.
Davis JK, Green JM (2009) Caffeine and anaerobic performance. Journal of Sports Medicine. 39(10), 814-832.
Dehkhoda MR, Shabani Moghadam K (2008) Supplements and ergogenic drugs in sports. Bamdad Ketab Publications.
Faigenbaum AD (2003) Milliken LA and Westcott WL. Maximum strength testing in healthy children. Journal Of Strength and Conditioning Research. 17(1), 162-166.
Goldstein ER, Ziegenfuss T, Kakman D, Kreider R, Campbell B, Wilborn C (2010) International society of sports nutrition position stand: caffeine and performance. Jissn.7, 5.
Graham T, Sprint LL (1995) Metabolic,catecholamine and exercise performance responses to various doses of caffeine. Journal of Physiology. 78(3), 867- 874.
James JE (1987) Understanding caffeine: A Biobehavioral Analysis. Thousand Oaks, CA: Sage Publications. 221-228.
Jenkins NT, Trilk JL, Singhal AO, Connor PJ, Cureton KJ (2008) Ergogenic effects of low doses of caffeine on cycling performance. International Journal of Sport Nutrition and Exercise Metabolism. 18, 328-342.
Kashi A, Kargar Fard M., Molavi H, Sarlak Z (2006) Consumption of ergogenic substances in bodybuilding athletes: Prevalence, knowledge, and awareness of their side effects. Olympic Journal. 2(34), 73-86.
Schneiker KT, Bishop D, Dawson B, Hacket LP (2006) Effects of caffeine on prolonged intermittent- sprint ability in team sport athletes. Medicine & Science in Sports & Exercise. 38(3), 578-85.
