【作者】 肖明冬；

【导师】 汤长发；

【作者基本信息】 湖南师范大学 ， 运动人体科学， 2005， 硕士

【摘要】 有研究表明,赛前快速脱水降体重对运动员的运动能力、身体机能和营养健康造成了影响。本研究通过观察不同方式快速脱水降体重对红细胞形态和血液流变学指标的变化,以期为运动员赛前快速降体重提供参考依据。 研究方法: 以湖南文理学院体育系2002级16名健康男生为实验对象,测定正常水合(0%BWL)、桑拿和运动脱水快速降体重2%(2%BWL)、桑拿及运动脱水快速降体重4%(4%BWL)这三种不同体重状态下,血液流变学指标的变化,并通过电镜观察红细胞形态改变。 研究结果: (1) 2%BWL和4%BWL时全血粘度(高、中、低切)、血浆粘度、红细胞压积、纤维蛋白原(Fi)有明显变化(P<0.05),TK、VR、Al、A2明显升高(P<0.05); (2) 电镜观察红细胞形态,由双凹扁平圆盘形变为呈周围肿胀或一面凹,另一面凸呈帽形的变化; (3) 4%BWL时血液流变学各指标变化明显高于2%BWL(P<0.05),红细胞形态异常程度也更加明显; (4) 桑拿快速脱水组与运动快速脱水组的血液流变学各指标在同等程度脱水程度下相比较,有差异,但差异没有统计学意义;红细胞形态在脱水前后有明显变化,但组间差异不显著。 结论: (1) 桑拿和运动等快速脱水降体重法,均可引起血液流变性的显著性变化和红细胞形态的改变。 (2) 快速脱水的程度与血液流变性密切相关。更多还原

【Abstract】 Many researches have shown the effects of different levels of rapid body weight loss on body functions, exercise ability and health of athletes before a match. By observing the effects of different levels of body weight loss in different ways on herheology and red cell modality, this research aims to offer the reference for athletes to lose weight rapidly.Methods:This research measured the change of hemorheology after euhydration（0%BWL）、 sauna-induced and exercise-induced body weight loss by 2%（2%BWL）and by 4%（4%BWL）respectively in 16 healthy male-students in PE. Department of Hunan University of Arts and Science. During the test, we utilized whole blood viscosity（WBV）, plasma viscosity（PV）, hematocrit （Hct）, erythrocyte deformability （TK）, erythrocyte aggregation indexes（A₁ and A₂）, erythrocyte rigid index（VR） etal. We investigated the changes of morphology of erythrocyte with the electronic microscopy. Results:（1） All indexes of herheology had significantly changed after 2%BWL and 4%BWL,such as WBV,PV,Hct,TK,Fi, A₁ A₂ etc（P<0.05）.（2） The modality of erythrocyte changed its shape as a double concave disk to that of a hat with one side sunken meanwhile another side heaved or one edge tumefied in the electron microscopy.（3）The changed indexes of hemorheology at 4%BWL are higer than those at 2%BWL（P < 0.05）, as well as abnormal intensity of更多还原