A sign on the hand that reveals a physically strong woman
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A recent study revealed that scientists can know the physical strength of a woman by a simple comparison of the index and ring fingers.
According to the study, conducted by researchers at the Department of Evolutionary Anthropology at the University of Vienna in Austria and published by Russia Today, women who have an index finger shorter than the ring finger are likely to be stronger.
The researchers looked at the 2D:4D digit ratio, which is the difference in length between the index finger and the ring finger (calculated by dividing the length of the index finger on a given hand by the length of the ring finger of the same hand), and how this relates to muscle strength.
Finger length is usually measured from the palmar (ventral) hand, from the middle of the inferior fold (where the finger is attached to the hand) to the tip of the finger.
It is actually thought that having an index finger shorter than the ring finger indicates increased exposure to testosterone in the womb.
In experiments, researchers found that women who had an index finger shorter than their ring finger tended to have higher grip strength than other women.
"Low 2D:4D ratio and high prenatal exposure to testosterone are associated with higher grip strength in puberty and this has been proven for men some time ago, and now we can show the same mechanism to women," study author Catherine Schaeffer told the British Daily Mail.
The team measured the ratios of digits and grip strength to 125 healthy women aged 19 to 31 from a remote area in Austria. The grip strength was measured using a dynamometer, a handled device often used for a routine medical examination of a patient's grip strength.
Study co-author, Sonya Windhager, noted: "We believe this is a reliable biomarker and the best non-invasive biomarker we can use to study humans in general and especially from a retrospective point of view.
Experimental possibilities in this area are very limited for ethical reasons.”
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