Digit ratio (2D:4D), lateral preferences, and performance in fencing

Area of Science:

• Human biology
• Sports science
• Endocrinology

Background:

• The second to fourth digit ratio (2D:4D) is a sexually dimorphic trait influenced by prenatal androgen exposure.
• This ratio is considered a biomarker for permanent effects of prenatal testosterone on the brain and body.
• Previous studies suggest a link between 2D:4D and athletic performance in various sports.

Purpose of the Study:

• To investigate the association between 2D:4D ratio and performance in tournament fencers.
• To determine if digit ratio patterns correlate with fencing rankings and experience.

Main Methods:

• The study analyzed the 2D:4D ratio in 54 tournament fencers, primarily from Austria.
• Fencers' digit ratios were compared with their current and highest national rankings.
• Statistical analyses controlled for training intensity and fencing experience.

Main Results:

• A negative right-left difference in 2D:4D was significantly associated with better fencing rankings in male fencers.
• Male fencers exhibited lower mean 2D:4D values and a higher proportion of left-handers than the general population.
• Lower right-hand 2D:4D ratios were observed in sabre fencers and left-handed fencers.

Conclusions:

• The findings support the hypothesis that 2D:4D ratio is a potential performance indicator in male athletes.
• The study adds to the growing evidence linking prenatal androgen exposure, as reflected by 2D:4D, to sport-specific performance.
• Further research is warranted to explore the relationship between digit ratio and performance, considering factors like hand preference.