The researchers hypothesized that the asymmetry on the non-dominant side “would appear to be protective rather than provocative” for low back pain. Thus, it is possible that the muscle hypertrophy is an adaptation to pain. When cricket players are compared with healthy non-athletes, the latter have more trunk symmetry with minor variability among the individuals.
Rather than only focusing on making the body look more “equal,” therapists and trainers should examine other factors that could increase in the risk of pain and injury in their athletes. For example, among cricket fast bowlers, contralateral lumbar flexion and ipsilateral rotation of the trunk —combined with the fast pitch around the time the ball is released — show a strong risk for back injury (Ranson 2008). The relationship among injury risk, biomechanics, and asymmetry have not yet been established, which require further research.
1. Gray J, Aginsky KD, Derman W, Vaughan CL, Hodges PW. Symmetry, not asymmetry, of abdominal muscle morphology is associated with low back pain in cricket fast bowlers. Journal of Science and Medicine in Sport. 2015 Apr 23. pii: S1440-2440(15)00091-2. doi: 10.1016/j.jsams.2015.04.009.
2. Ranson CA, Burnett AF, King M, Patel N, O'Sullivan PB. The relationship between bowling action classification and three-dimensional lower trunk motion in fast bowlers in cricket. Journal of Sports Sciences. 2008 Feb 1;26(3):267-76.