The relationship between digit ratio (2D:4D) and muscular fitness: A systematic review and meta-analysis.

Brooke E PasanenJordan M TomkinsonTrevor J DufnerChan Woong ParkJohn S FitzgeraldGrant R Tomkinson

Published in: American journal of human biology : the official journal of the Human Biology Council (2021)

We found a weak negative relationship between 2D:4D and HGS, which showed substantial heterogeneity between studies, but was neither moderated by sex nor age. Our finding probably reflects both the long-term (organizational) and short-term (activational) benefits of testosterone.

Keyphrases

body composition
physical activity
resistance training
replacement therapy
single cell
case control