Eschbach L F, Webster M J, Boyd J C, McArthur P D, Evetovich T K
<School of Human Performance and Recreation, University of Southern Mississippi, Hattiesburg, MS 39406, USA.
Int J Sport Nutr Exerc Metab. 2000 Dec;10(4):444-51. doi: 10.1123/ijsnem.10.4.444.
It has been suggested that Eleutherococcus senticosus (ES), also known as Siberian ginseng or ciwuija, increases fat utilization in humans. The purpose of this study was to examine the physiological responses to supplementation with ES in endurance cyclists. Using a randomized, double-blind crossover design, 9 highly-trained men (28 +/- 2 years, VáO2max 57.3 +/- 2.0 ml á kg-1 á min-1) cycled for 120 min at '60% VáO2max followed by a simulated 10-km time trial. Diet was controlled, and ES (1,200 mg á day-1) or a placebo (P) were administered for 7 days prior to each of the two trials. Oxygen consumption, respiratory exchange ratio, and heart rate were recorded every 30 min, and rating of perceived exertion, plasma [lactate], and plasma [glucose] were recorded every 20 min during the 120 min of steady state cycling. There were no significant differences (p >.05) between the ES and P groups at any steady-state time interval or during the cycling time trial (ES = 18.10 +/- 0.42, P = 17.83 +/- 0.47 min). In contrast with previous reports, the results of this study suggest that ES supplementation does not alter steady-state substrate utilization or 10-km cycling performance time.
有人认为刺五加（ES），也被称为西伯利亚人参或刺五加，能提高人类的脂肪利用率。本研究的目的是检测耐力自行车运动员补充刺五加后的生理反应。采用随机、双盲交叉设计，9名训练有素的男性（28±2岁，最大摄氧量57.3±2.0 ml·kg-1·min-1）以“60%最大摄氧量”骑行120分钟，随后进行模拟10公里计时赛。饮食得到控制，在两项试验前的每一项中，均连续7天给予刺五加（1200毫克/天）或安慰剂（P）。在120分钟的稳态骑行过程中，每30分钟记录一次耗氧量、呼吸交换率和心率，每20分钟记录一次主观用力感觉等级、血浆[乳酸]和血浆[葡萄糖]。在任何稳态时间间隔或骑行计时赛期间，刺五加组和安慰剂组之间均无显著差异（p>.05）（刺五加组=18.10±0.42，安慰剂组=17.83±0.47分钟）。与之前的报道相反，本研究结果表明，补充刺五加不会改变稳态底物利用率或10公里骑行成绩时间。
