Sudhakar H H, Veena Umesh B, Tejaswi R Nadig
Department of Physiology, Kempegowda Institute of Medical Sciences, Bangalore--560 070, India.
Indian J Physiol Pharmacol. 2013 Jan-Mar;57(1):72-6.
It has been suggested that achievement in sports is correlated with a putative measure of prenatal testosterone the 2nd to 4th digit ratio (2D:4D). It has been shown that digit ratio (2D:4D) is negatively associated with prenatal testosterone, and it is also negatively associated with ability in sports. This study examined associations between 2D:4D and performance of both male and female National level Indian swimmers. Age matched non-sports personnel formed the control. Lengths of second and fourth digits were measured after scanning both hands and their ratio calculated. Our results show lower 2D:4D values in males compared to females (P < 0.05). Among male, but not female, swimmers had significantly (P < 0.05) lower 2D:4D ratio. Low 2D:4D in male swimmers suggests they are more prenatally programmed via long-lasting extra genital effects of testosterone. 2D:4D ratio could be used to identify young sports personnel who have potential to reach high levels of performance.
有人提出，运动成绩与一种假定的产前睾酮测量指标——第二至第四指比例（2D:4D）相关。研究表明，指比例（2D:4D）与产前睾酮呈负相关，也与运动能力呈负相关。本研究调查了2D:4D与印度国家级男女游泳运动员成绩之间的关联。年龄匹配的非运动员人员作为对照。扫描双手后测量第二和第四指的长度，并计算其比例。我们的结果显示，男性的2D:4D值低于女性（P < 0.05）。在男性游泳运动员中，2D:4D比例显著更低（P < 0.05），但女性并非如此。男性游泳运动员的低2D:4D表明，他们在产前受到睾酮长期的外生殖器外效应影响，从而有更多的先天规划。2D:4D比例可用于识别有潜力达到高水平成绩的年轻体育人才。
