Testosterone and attitudes toward competition

睾丸激素和对竞争的态度

• 批准号: 22653030
• 负责人: OHTAKE Fumio
• 金额: $ 1.92万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22653030/
• 关键词: 経済実験; 男性ホルモン; 昇進; 大相撲; 2D:4D; 経済実験; 男性ホルモン; 昇進; 大相撲; 2D:4D

The second (index finger) to fourth (ring finger) digit length ratio (2D : 4D) is known to be a putative marker of prenatal exposure to testosterone. It has been reported that fetal and adult testosterone may be critical for development of physical and mental traits such as cardiovascular system, reaction time, aggressiveness and masculinity. Testosterone-driven attributes are associated with success in male-to-male physical competition, which may be proxied by ability in sports. Many researchers have found that 2D : 4D is sexually dimorphic and is a negative correlate of athletic performance. This study aims to investigate the associations of 2D : 4D with measures of power as another possible testosterone-associated trait using ability in sumo wrestling as a proxy for male physical competitiveness. The measures of sumo performance comprised the sumo ranks and winning percentages of 142 Japanese professional sumo wrestlers. We found that sumo wrestlers with low 2D : 4D had higher sumo ranks and better winning records. The significant negative associations between 2D : 4D and the athletic prowess of sumo wrestlers provide further evidence of the possible link between high testosterone levels and muscle strength. The relatively small effect sizes found in this study, however, imply that 2D : 4D may be a weaker predictor for sports requiring explosive power than for those requiring endurance.

已知第二个（食指）至第四（环指）数字长度比（2d：4d）是对睾丸激素的产前暴露的推定标志。据报道，胎儿和成人睾丸激素对于发展心血管系统，反应时间，侵略性和男性气质等身体和精神特征可能至关重要。睾丸激素驱动的属性与男性到男性的身体竞争的成功有关，这可以通过运动能力来代表。许多研究人员发现，2d：4d是性二态性的，并且是运动表现的负相关。这项研究旨在将2D：4D的关联与衡量睾丸激素相关的性状的衡量能力，利用Sumo Wrestling中的能力作为男性身体竞争力的代理。相扑性能的度量包括142名日本专业相扑摔跤手的相扑排名和赢得百分比。我们发现，2d：4d的Sumo摔跤手的相扑排名更高，并且获胜的记录更好。 2d：4d和Sumo Wrestlers的运动能力之间的显着负相关提供了进一步的证据，证明了高睾丸激素水平与肌肉力量之间可能联系。但是，在这项研究中发现的相对较小的效应大小表明，与需要耐力的人相比，2d：4d可能是需要爆炸力的运动的预测指标。