Kuipers Harm, Moran Jane, Mitchell David W, Shobe Joel, Dubravcic-Simunjak Sanda, Sakai Hiroya, Ambartsumov Ruben
Department of Movement Sciences, University of Maastricht, The Netherlands.
Clin J Sport Med. 2007 Mar;17(2):135-9. doi: 10.1097/JSM.0b013e31803bf65b.
To test the hypotheses that the hemoglobin (Hb) distribution curve in elite male and female long track speed skaters is not normally distributed and that there is a positive relationship between competitive success and Hb concentration.
A venous blood sample was taken before the events from all skaters. The Hb concentration distribution curves of all ranked from 1 to 30 were tested for normality. In addition, individual Hb concentrations were plotted against ranking in the matching events.
2006 major championships and Olympic winter games.
All elite male and female speed skaters (217 men and 200 women) competing in major international championships in 2006 and in the Olympic winter games 2006.
Hb concentration and individual ranking in the matching event.
The mean Hb levels in men and women were 15.7 +/- 0.8 g/dL and 14.0 +/- 0.7 g/dL, respectively. The distribution curve in men would meet the criteria for normal distribution when 4 values from 2 skaters with naturally high Hb levels were neglected. In the women, the distribution curve did not meet the criteria for normality because of low frequency in the right side of the distribution curve and a high frequency at the left side. The curve failed to have a steep drop off at the right side. When plotting Hb concentration against ranking, there is no correlation and relationship between Hb concentration and competitive success.
The Hb concentrations are within the normal range for endurance athletes, and there is no indication that the values are titrated toward the upper allowed limit. In addition, there is no relationship between Hb concentration and competitive success in elite speed skaters.
检验以下假设，即优秀男女长道速滑运动员的血红蛋白（Hb）分布曲线呈非正态分布，且竞技成绩与Hb浓度之间存在正相关关系。
在比赛前采集所有速滑运动员的静脉血样。对所有排名从1至30的运动员的Hb浓度分布曲线进行正态性检验。此外，将个体Hb浓度与相应比赛中的排名进行绘图分析。
2006年世界锦标赛和冬季奥运会。
所有参加2006年重大国际锦标赛和2006年冬季奥运会的优秀男女速滑运动员（217名男性和200名女性）。
Hb浓度和相应比赛中的个人排名。
男性和女性的平均Hb水平分别为15.7±0.8 g/dL和14.0±0.7 g/dL。若忽略2名Hb水平自然较高的运动员的4个值，男性的分布曲线将符合正态分布标准。在女性中，分布曲线不符合正态分布标准，因为分布曲线右侧频率较低而左侧频率较高。曲线在右侧没有急剧下降。当绘制Hb浓度与排名的关系图时，Hb浓度与竞技成绩之间没有相关性和关系。
Hb浓度在耐力运动员的正常范围内，没有迹象表明这些值被调整到允许的上限。此外，优秀速滑运动员的Hb浓度与竞技成绩之间没有关系。
