【摘要】 <正> 运动训练时,长时间的剧烈的肌肉运动,使体内物质和能量消耗增高,尤其是少年运动员正处于生长发育时期。代谢旺盛;同时,由于运动时排汗较多,引起某些营养素的丢失。国内外许多研究报告曾提出,运动时,机体对维生素的需要量增加。目前,在运动训练实践中,对于运动员除在膳食中摄取维生素B₁、更多还原

【Abstract】 In this study, amount of vitamin B₁, B₂ and C in urine within four hours after vitamin loading was determined by fluorometric colorimetric analysis and 2,6-dichlorophenol indophenol titration method.The subjects were fifty juvenile athletes （distance runners and skaters）. They were divided into one control group and four testing groups. The control group didn’t take any vitamin B₁, B₂ and C supplement except three meals daily. Each person of four testing groups took different amounts of vitamins.The results showed that vitamin B₁, B₂ and C requirements for juvenile athletes during training period were: VB₁ 6—7 mg/D, VB₂ 1.7—1.8 mg/D, VC 120—130 mg/D.更多还原