Sadeghi H, Allard P, Prince F, Labelle H. Symmetry and limb dominance in able-bodied gait: a review. Gait Posture. 2000 Sep;12(1):34–45.
Zifchock RA, Davis I, Hamill J. Kinetic asymmetry in female runners with and without retrospective tibial stress fractures. J Biomech. Elsevier; 2006 Jan 1;39(15):2792–7.
Symmetry is a nice word, but not too easy to evaluate. But it is sure possible.