Symmetry in Swimming Forces
Analyzing Hand Force in Swimming: Bilateral Symmetry
Rod Havriluk, Ph.D.
American Swimming Magazine, 2007(1), 34-38.
Bilateral symmetry in hand force (equal force generated by both hands) is important to maximize propulsion and minimize resistance. However, most swimmers have asymmetries. A 25% difference between the left and right hands is not uncommon.
A synchronized underwater video and force analysis is necessary to quantify asymmetries. Once the differences are identified, visual and kinesthetic cues can help swimmers minimize these differences. Because of the relationship between hand force and swimming velocity, improving bilateral symmetry in hand force will improve performance.