In the first scenario, it can be due to a genetic condition, trauma to the spine, pregnancy in women, increased abdominal fat or a sedentary lifestyle (sitting too much causes muscle imbalances and is the most common reason for this issue) and in the second scenario, the estrogen weakens the muscles in the area.Merely slouching doesnt cause height loss even though it may make a person look shorter, slouching may lead to perceived height loss whereas lumbar hyperlordosis leads to actual and measured height loss. To make it easier to understand the difference, if a person loses a vertebra (which is around 2 inches or 5 centimeters in height) in his or her spine, it doesnt matter if he or she slouches or not, he or she will be shorter regardless of his or her posture. Lumbar hyperlordosis, of course, doesnt make you lose a vertebra but it bends them in such a way that your spines vertical height is reduced.Although lumbar hyperlordosis gives an impression of a stronger back, it can lead to moderate to severe lower back pain. The most problematic symptom is that of a herniated disc where the individual has put so much strain on the back that the discs between the vertebrae have been damaged or have ruptured. Technical problems with dancing such as difficulty in the positions of attitude and arabesque can be a sign of weak iliopsoas. Tightness of the iliopsoas results in a dancer having difficulty lifting their leg into high positions.
Abdominal muscles being weak and the rectus femoris of the quadriceps being tight are signs that improper muscles are being worked while dancing which leads to lumbar hyperlordosis. The most obvious signs of lumbar hyperlordosis is lower back pain in dancing and pedestrian activities as well as having the appearance of a swayed back. Causes
Possible causes that lead to the condition of lumbar hyperlordosis are the following:

Spines – Natural factors of how spines are formed greatly increase certain individuals likelihood to experience a strain or sprain in their back or neck. Factors such as having more lumbar vertebrae allowing for too much flexibility, and then in cases of less lumbar the individual not reaching their necessity for flexibility and then pushing their bodies to injury. Legs – Another odd body formation is when an individual has a leg shorter than the other, which can be immediate cause for imbalance of hips then putting strain on the posture of the back which an individual has to adjust into vulnerable positions to meet aesthetic appearances. This can lead to permanent damage in the back. Genu recurvatum (sway back knees) is also a factor that forces a dancer to adjust into unstable postures. Hips – Common problems in the hips are tight hip flexors, which causes for poor lifting posture, hip flexion contracture, which means the lack of postural awareness, and thoracic hyperkyphosis, which causes the individual to compensate for limited hip turn out (which is essential to dances such as ballet).