Koçak S, Karli U
Physical Education and Sport Department, Middle East Technical University, Ankara, Turkey.
J Sports Med Phys Fitness. 2003 Dec;43(4):488-92.
The purpose of this study was to investigate the effect of high dose oral creatine supplementation on anaerobic capacity of elite wrestlers.
comparative randomized design.
Wingate anaerobic tests of the participants were taken at the Human Performance Laboratory of the Department of Physical Education and Sports in The Middle East Technical University, Ankara, Turkey.
20 active international level wrestlers participated (22 to 27 years old).
the daily dosage of creatine or placebo was divided into 4 equal amounts (5 gx4 = 20 g). Every 5 g of supplement was dissolved in 250 ml water and it was given to participants 1 hour before breakfast, lunch, dinner, and workout session.
subjects underwent a 30-s Wingate Anaerobic tests until exhaustion in pre- and post-tests. After the pretest measurements were completed, participants were classified as creatine (Cr., n=10) and placebo (Pl., n=10) groups with regard to their average anaerobic power scores obtained during the test.
Results of paired "t"-test revealed that there was no significant change in placebo group between pre- and post-test in average and peak anaerobic power. However, average and peak power mean scores obtained from post-test (8.123+/-0.448 W/kg and 10.523 +/-1.004 W/kg) were significantly (p<0.01) higher than pretest (7.233+/-0.483 W/kg and 8.992+/- 0.665 W/kg) for creatine group. Results of the independent "t"-test also indicated that the mean gained scores of creatine group in average and peak power were significantly higher than placebo group (p<0.01).
This study demonstrates that short-term high dose oral creatine supplementation has an ergogenic effect on anaerobic capacity of elite wrestlers.
本研究旨在调查大剂量口服肌酸补充剂对优秀摔跤运动员无氧能力的影响。
比较随机设计。
参与者的温盖特无氧测试在土耳其安卡拉中东技术大学体育系人体运动实验室进行。
20名现役国际水平摔跤运动员（22至27岁）。
肌酸或安慰剂的每日剂量分为4等份（5克×4 = 20克）。每5克补充剂溶解在250毫升水中，在早餐、午餐、晚餐和训练前1小时给予参与者。
受试者在测试前和测试后进行30秒的温盖特无氧测试，直至力竭。在完成测试前测量后，根据测试期间获得的平均无氧功率得分，将参与者分为肌酸组（Cr.，n = 10）和安慰剂组（Pl.，n = 10）。
配对“t”检验结果显示，安慰剂组在测试前和测试后的平均和峰值无氧功率无显著变化。然而，肌酸组测试后的平均和峰值功率平均得分（8.123±0.448瓦/千克和10.523±1.004瓦/千克）显著高于测试前（7.233±0.483瓦/千克和8.992±0.665瓦/千克）（p<0.01）。独立“t”检验结果还表明，肌酸组在平均和峰值功率方面的平均得分显著高于安慰剂组（p<0.01）。
本研究表明，短期大剂量口服肌酸补充剂对优秀摔跤运动员的无氧能力有促力效应。
