运动员减体重期维生素代谢的改变及其补充

The Vitamin Metabolism during the Period of Weigh Reduction in Wrestlers

对３４名摔跤运动员减体重期维生素代谢的研究表明，运动员减体重期摄入的ＶＡ、ＶＢ１、ＶＢ２、ＰＰ、ＶＣ都明显低于运动员供给量标准。血中ＶＡ浓度减重前后基本一致，暗适应时间稍延长，２４ｈ尿中ＶＢ１；、ＶＢ２、ＶＣ排出量减体重后明显低于减体重前。尿中ＰＰ排出量减体重前后基本一样，任意克肌酐尿中ＶＢ１、ＶＢ２、ＰＰ、ＶＣ排出量与２４ｈ尿中这几种维生素排出量结果基本一致，进一步说明了结果的可靠性。服用减重营养饼干后，血中ＶＡ含量减体重后高于减前，适应时间减体重前后基本一致，但短于普通饼干组。尿中ＶＢ１、ＶＢ２、ＰＰ、ＶＣ排出量减体重后高于减重前，且均高于吃普通饼干对照组。说明减体重营养饼干补充了运动员减体重造成的各种维生素的不足和丢失，满足了运动员减体重对维生素的需要。

The vitamin metabolism of 34 wrestlers during the period of weight reduction showed that the intake of VA.VB1 .WB2 .PP.VC in the wrestlers during the period was remarkably lower than that of recommended standard. The concentration of VA in blood before and after weight reduction was almost unchanged, while the adaptation time to darkness in athletes was prolonged after weight reduction. The excretion of VB1 .VB2 .VC in urine within 24 hours after reducing weight was lower than that before weight reduction. The excrete- tin of PP in urine before and after weight reduction was the same. The excretion of VB1 .WB2.PP.VC in any gram of cretonne in urine was in accord with that of vitamin in union within 24 hour, confirming the reliability of the realest. After having the for re- ducking weight, the concentration of blood VA in wrestlers was increased, the time of the adaptability to darkness after reducing weight was shorter than that in the control group. The excretion of VB1 .WB2 .PP.VC increased in athletes three weight reduction and was SIG- whcantly higher than that in control group. The study demonstrated that nutritious crackers for reducing weight could replenish the loss of vitamin in wrestlers and meet the need of vitamin during the period of weight deduction.