It was found that the relationship between the length of the index finger and the ring finger is related to the efficiency of oxygen supply to the tissues. Authors of the study note in the journal note that this indicator may influence the severity of Covid-19 and heart disease American Journal of Human Biology.
133 professional football players who were asked to exercise on the treadmill until they got tired participated in the research. They also measured the length ratio of their index fingers to their ring fingers.
Players with longer ring fingers compared to index fingers achieved higher maximum oxygen consumption in the treadmill test.
Longer ring fingers compared to index fingers are believed to be an indicator of high testosterone levels during fetal development. This hormone affects oxygen metabolism.
The results are consistent with other studies where long ring fingers have been linked to better performance in long-distance running, a lower risk of heart disease and milder Covid-19.
Only male athletes participated in the research. The authors called for the experiments to be repeated in women.
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