<![CDATA[Background: Low Back Pain (LBP) is one of the musculoskeletal disorders caused by deficient activity of the body. LBP can be experienced by anyone, at any age. Hazards and risks LBP one of which is a result of the lack of flexibility of the body. Flexibility is very important in everyday life, especially for ease of movement, reduce stiffness, improve skills, reduce injury and reduce pain. Stretching exercises are exercises that can be done to improve flexibility.Metode: The purpose of this study was to determine the effect of stretching exercises Mc.Kenzie Exercise and William's Flexion Exercise (WFE) to decrease the level of pain in patients with LBP in RSOP Purwokerto. This study used pre-experimental research design with pretest-posttest approach with a total sample were 28 respondents. Data were analyzed using the Kolmogorov-Smirnov test for normality. Wilcoxon test was used to analyze difference of pre and post-test and Mann Whitney test was used to analyze between each treatment. Limitation of statistical tests of significance was p=0.05.Result: The results showed respondents' average age was 58.14 years, 75% were female with elementary educational employment as housewife. While the level of pain prior to stretching exercisesan average of 6.46. After Mc.Kenzie Exercise and William's Flexion Exercise (WFE) for 2 month sequally influence the decrease in the degree of pain, but there is differences on the effects of stretching exercises between Mc.Kenzie and William method. William method is better than Mc.Kenzie method to decrease the level of pain in patients with LBP with the difference in the level of pain the average value on Mc.Kenzie Exercise 0.21 and1.07 at William's Flexion Exercise.Conclusion: It can be concluded that both methods are able to decrease the level of pain in LBP but William's Flexion Exercise method is better than the Mc.Kenzie Exercise. There fore William's Flexion Exercise and Mc.Kenzie Exercisecan be recommended as one of therapy to decrease the level of pain of patients with LPB.]]>
