Effect of Sport Shoe Aging on General and Directed Co-contraction in Ankle Joint Muscles during Running in Normal and Genu Varum Females

Genu varum is a lower limb deformity. This study was done to evaluate the effects of shoe aging on the general and directional contraction of ankle muscles during running in females with genu varum.

This case-control study was done on 30 female students (15 individuals with genu varum degree 2 and 15 healthy individuals) using new and old sneakers for 6 months in the sports biomechanics laboratory of the University of Mohaghegh Ardabili, Iran. Each subject was given a new pair of sneakers, and after the initial data collection, the subjects were asked to use them in their daily activities for at least an hour a day for 6 months. Electrical muscle activity was recorded using surface electromyography.

There was no significant difference in the general and directional contractions if ankle muscles during the running phases.

Shoe aging has no effect on ankle joint co-contractions.