关键词: 玛咖, 西洋参, 负重游泳时间, 血清尿素, 肝糖原, 血乳酸

Abstract: Objective To study the effects of maca and american ginseng on relieving physical fatigue.Methods 4 experiments were carried out,in each of which 70 mice were used and they were divided into 7 groups: deionized water,0.04,0.4,1.2g/kg of maca,0.04,0.4,1.2g/kg of american ginseng,administrated to each group for 30 days,respectively.The four tests were used to determine swimming time with weight loading;serum urea instant after exercise;hepatic glycogen;and blood lactose before or instant after or 20 minutes after exercise.Results Compared with the control,0.4,1.2g/kg of maca could extend swimming time with weight loading in mice(P<0.05,P<0.01),0.4,1.2g/kg of american ginseng could extend swimming time with weight loading (P<0.05,P<0.01);maca had noeffects on serum urea(P>0.05),1.2g/kg of american ginseng could reduce serum urea after exercise(P<0.05);maca and american ginseng could increase hepatic glycogen;0.4,1.2g/kg of maca could decrease the fluctuation of blood lactose before and after exercise(P<0.01),american ginseng had no effects on it.Conclusion Both maca and american ginseng can relieve physical fatigue,but they have different effects on blood lactose and serum urea in mice.

Key words: Maca, American ginseng, Swimming time with weight loading, Serum urea, Hepatic glycogen, Blood sugar