The aerodynamics of running socks: Reality or rhetoric?

AIM

The primary objective of this study was to test the aerodynamic properties of a selection of running and general sports socks.

METHODS AND PROCEDURES

Eleven pairs of socks were tested in a specially constructed rig which was inserted into a fully calibrated wind tunnel. Wind test speeds included 3, 4, 5, 6, 12 and 45m/s.

RESULTS

There was no significant difference between any of the socks tested for their aerodynamic properties. The drag coefficients calculated for each sock varied proportionally with the Reynolds number. No particular sock was more aerodynamic than any of the socks tested.

CONCLUSION

There is no evidence that a sock that is "aerodynamically designed" will help an athlete go faster. This may be more product rhetoric than reality, and further work is justified if such claims are being made.