Symmetry and performance in middle distance runners

Area of Science:

• Human Biology
• Sports Science
• Biometrics

Background:

• Skeletal and soft tissue asymmetries can indicate developmental instability.
• Optimal phenotypic quality is often associated with high levels of bilateral symmetry.
• Previous research suggests a link between symmetry and health or quality, but its relation to athletic performance is less explored.

Purpose of the Study:

• To investigate the relationship between physical symmetry and athletic performance in middle-distance runners.
• To determine if specific symmetrical traits correlate with running ability and race times.

Main Methods:

• Fifty male middle-distance runners were assessed for bilateral symmetry in seven traits (ear size, nostril width, digit length, wrist width).
• Athletic ability was ranked, and personal best times for 800m and 1500m races were recorded.
• Statistical analyses, including Bonferroni adjustment and multiple regression, were used to evaluate the data.

Main Results:

• Subjects with greater symmetry in nostril width and ear size demonstrated higher athletic rankings.
• Symmetric individuals, particularly in nostrils and ears, achieved faster best times for both 800m and 1500m races.
• These findings remained significant after controlling for age and experience.

Conclusions:

• Bilateral symmetry in traits like nostrils and ears is associated with superior running performance in middle-distance athletes.
• Physical symmetry may serve as a useful, non-invasive indicator for predicting athletic potential in young runners.