Oöpik V, Pääsuke M, Timpmann S, Medijainen L, Ereline J, Gapejeva J
Institute of Exercise Biology, University of Tartu, Tartu, Estonia.
J Sports Med Phys Fitness. 2002 Sep;42(3):330-9.
The aim of the study was to test the hypothesis that creatine supplementation with concomitant carbohydrate ingestion during recovery period after rapid body mass reduction accelerates the restoration of body mass and physical performance in well-trained wrestlers.
A double-blind, placebo-controlled cross-over study was conducted on five young healthy male wrestlers, who reduced their body mass by 4.5-5.3% in two series of investigations separated by one month. During 17 hrs recovery period they consumed controlled diet supplemented in random order with glucose (GL trial) or with glucose plus creatine (GL+CR trial). The capacity of the subjects to perform submaximal and maximal (W(max)) intensity work was measured using 5 min intermittent intensity test exercise at the Cybex II device before (Test 1) and after body mass loss (Test 2), also after the recovery (Test 3) on both trials.
There was no effect of treatment on the extent of body mass regain during 17 hrs recovery. A significant increase (19.2%) in W(max) from Test 2 to Test 3 was observed in GL+CR trial whereas no change was evident with GL treatment. A strong correlation (r=0.92) was established between the whole body creatine retention and the extent of change in W(max) from Test 2 to Test 3.
The results suggest that creatine supplementation with concomitant glucose ingestion during 17 hrs recovery from rapid body mass loss does not accelerate the restoration of body mass but still stimulates the regain of physical performance in maximal intensity efforts in well-trained wrestlers.
本研究的目的是验证以下假设：在快速减重后的恢复期，补充肌酸并同时摄入碳水化合物，可加速训练有素的摔跤运动员体重和身体机能的恢复。
对五名年轻健康的男性摔跤运动员进行了一项双盲、安慰剂对照的交叉研究。在相隔一个月的两轮调查中，他们的体重减轻了4.5%-5.3%。在17小时的恢复期内他们食用了控制饮食，随机补充葡萄糖（GL试验）或葡萄糖加肌酸（GL+CR试验）。在两次试验中，分别于体重减轻前（测试1）、体重减轻后（测试2）以及恢复后（测试3），使用Cybex II设备通过5分钟间歇强度测试运动来测量受试者进行次最大强度和最大强度（W(max)）工作的能力。
在17小时的恢复期内，治疗对体重恢复程度没有影响。在GL+CR试验中，观察到从测试2到测试3，W(max)显著增加（19.2%），而GL治疗组则无明显变化。从测试2到测试3，全身肌酸保留量与W(max)变化程度之间建立了强相关性（r=0.92）。
结果表明，在从快速体重减轻中恢复的17小时内，补充肌酸并同时摄入葡萄糖，并不会加速体重恢复，但仍能刺激训练有素的摔跤运动员在最大强度运动中恢复身体机能。
