Importance of this article is knowing about human back and lumbar spine. This article answer to important questions such as what is lordosis deformity? How lordosis deformity is happening? What is the range of motion? How lordosis deformity effect on range of motion? What is exercise therapy and William exercise? How William exercise effect on range of motion?

The peruse of this study was to assess the effect of exercise therapy for improvement range of motion. The data were considered in relation to recommended levels of exercise therapy can be effective helping to improve range of motion in middle aged women who had hyper lordosis deformity. In this article level of participation in twelve week William exercises were explored. The participants in this study were 20 middle ages women.10 were experimental group (affected by hyper lordosis deformity) and 10 were control group (affected by hyper lordosis). The sample was collected through random sampling method. Three months considered for treatment protocol, six exercises done in three random days of each week of three months To assess the range of motion three test considered (standing lumbar flexion, lateral flexion, straight leg raise) use to evaluate the subjects before(pretest)the beginning of the program, the first and the last of each month. The result showed experimental group that did leg raise test have significantly pain reduction.