Kociuba Marek, Chakraborty Raja, Ignasiak Zofia, Kozieł Sławomir
General Tadeusz Kosciuszko Military Academy of Land Forces, Wroclaw, Poland.
Department of Anthropology, Dinabandhu Mahavidyalaya, Bongaon, West Bengal, India.
Early Hum Dev. 2019 Jan;128:62-68. doi: 10.1016/j.earlhumdev.2018.11.009. Epub 2018 Dec 6.
The ratio of the lengths of second finger (2D) to the fourth (4D) is a putative indicator of foetal hormonal exposure. The link between 2D:4D and physical strength or sports performance in not consistent. It was suggested that the association of 2D:4D with the sporting and physical ability is better demonstrated in the context of challenge and competition, either real or simulated. However the evidence is limited to a few studies till date.
The objective of this study was to assess whether an aggressive video show could increase muscular strength and if 2D:4D moderated such increase.
We compared outcome measures in two experimental conditions.
Lengths of second (2D) and fourth (4D) digits and their ratio (2D:4D) for both hands, height and weight, handgrip strength of both hands.
250 healthy young adults (76 female).
The mean left-, right- and average HGS values increased after aggressive video watching than after control blank screen show. The increase was higher in females compared to males. The increase was higher among the individuals with lower 2D:4D, more clearly among females.
The 2D:4D correlated negatively with HGS after exposure to challenge condition and this relationship is pronounced in females than males. Thus there is link between prenatal androgenisation and enhanced physical power in challenge situation.
食指（2D）与无名指（4D）的长度比被认为是胎儿激素暴露的一个指标。2D:4D与体力或运动表现之间的联系并不一致。有人提出，在真实或模拟的挑战和竞争背景下，2D:4D与运动和身体能力之间的关联能得到更好的体现。然而，迄今为止，相关证据仅限于少数研究。
本研究的目的是评估观看暴力视频是否能增强肌肉力量，以及2D:4D是否会调节这种增强效果。
我们比较了两种实验条件下的结果指标。
双手的食指（2D）和无名指（4D）长度及其比例（2D:4D）、身高和体重、双手握力。
250名健康的年轻成年人（76名女性）。
观看暴力视频后，左手、右手和平均握力值的均值均高于观看对照空白屏幕后。女性的增加幅度高于男性。2D:4D较低的个体增加幅度更大，在女性中更为明显。
在接触挑战条件后，2D:4D与握力呈负相关，且这种关系在女性中比在男性中更为明显。因此，产前雄激素化与挑战情境下增强的体力之间存在联系。
