Muscle imbalance
Although it is quite uncertain for scoliosis to develop due to muscle imbalance or activity of the muscle, mild scoliosis cases can develop in people who play sports or in professional athletes who focus on heavy activities and mostly put a lot of pressure on one side of the body. Even though it’s not clear that either muscle imbalance causes scoliosis or not, it’s quite certain that muscle imbalance contributes to making the condition worse.