요통 유무에 따른 20대 성인의 넙다리뒤근에 적용한 두 가지 근에너지 기법 종류에 따른 골반 경사각 및 넙다리뒤근 길이에 미치는 즉각적 효과 비교

Comparison of the Immediate Effects of Two Types of Muscle Energy Techniques Applied to the Hamstring of Adults in Their Twenties With or Without Low Back Pain on the Pelvic Inclination and the Length of the Hamstring

Background: Lower back pain (LBP) is a major cause of disability and a common musculo-skeletal disorder encountered at some point in life. Dysfunction of the lumbar vertebrae has been associated with decreased flexibility of the hamstrings, which exhibited a strong positive correlation with LBP. Hamstring tension affects lumbar pelvic rhythm. We aimed to activate pelvic stability with compression by Active Therapeutic Movement (ATM), muscle energy tech-nique (MET) was applied to increase the flexibility of the hamstring. Objects: In this study, we aimed to investigate the effects of MET with ATM and general MET were applied to the hamstring of adults, who were in their twenties with nor without LBP, on their pelvic inclination and the length of their hamstring. Methods: A total of 32 subjects were briefed about the purpose of this study and agreed to participate voluntarily. Before the experiment, all subjects were pre-examined, and they were divided into an LBP group and a no lower back pain group accordingly. Thereafter, all subjects participated in both in a crossover manner. After at least one week, they switched to another group and participated in the same experiment. Results: The study results revealed that both groups demonstrated significant results in the modified active knee extension test (p < 0.01) and the sit and reach test (p < 0.01) per-formed to assess the hamstring flexibility; an interaction (p < 0.05) was noted. Moreover, a more significant difference was observed between the MET with ATM and the general MET. Although significant results were obtained for the pelvic inclination (p < 0.01), interaction was not noted. Conclusion: Conclusively, in this study, when the MET with ATM was applied to the two groups, there was a significant difference compared to the general MET for hamstring flex-ibility, but it was confirmed that there was no significant difference for the pelvic inclination.