Huang Tian-Zong, Kim Suhn-Yeop
Department of Physical Therapy, Graduate School, Daejeon University, 62 Daehak-ro, Dong-gu, Daejeon, 34520, Republic of Korea.
Department of Physical Therapy, College of Health and Medical Science, Daejeon University, 62 Daehak-ro, Dong-gu, Daejeon, 34520, Republic of Korea.
BMC Sports Sci Med Rehabil. 2022 Jun 21;14(1):116. doi: 10.1186/s13102-022-00506-1.
Sacroiliac joints (SIJs) transmitted trunk load to lower extremities through the lumbopelvis. External compression devices across the SIJs could provide stability to the SIJs. A previous study established that using a device known as Active Therapeutic Movement version 2 (ATM2) has been developed to improve pain and joint range of motion (ROM) in patients with LBP. However, no study has examined the physiological change in the muscle through ATM®2-based exercise thus far. This study aimed to determine the immediate effects of ATM2 exercise on the contraction timing, back extension endurance, muscle fatigue, and trunk ROM of lumbar and lower limb muscles in healthy subjects.
Thirty-six healthy subjects (mean age = 23.16 ± 2.3) volunteered to participate in this study. Subjects were instructed to perform ROM test using sit and reach test, back extensor endurance test using Biering-Sorensen test, erector spinae (ES), lumbar multifidus (LM) fatigue and onset time of Gluteus maximus (GM) in prone hip extension using electromyography before and after trunk flexion and extension isometric exercises.
The ROM in trunk flexion showed a significant increase of 7.9% after exercise compared to that before exercise (p < 0.05). Relative GM contraction onset timing significantly decreased after exercise (p < 0.05). The result of the Sorensen test after exercise showed a trend of increase in duration time. Muscle fatigue in the LM, however, showed a significant increase (p < 0.05), whereas muscle fatigue in the ES was reduced without statistical significance.
The results base on this study showed that exercise-based on ATM®2 is an effective exercise protocol with an effect on the biomechanics of healthy subjects. Clinical trial registration numbers KCT0006728. Clinical trial registration date: 09/11/2021.
骶髂关节（SIJs）通过腰骶骨盆将躯干负荷传递至下肢。横跨骶髂关节的外部加压装置可为骶髂关节提供稳定性。先前的一项研究表明，已开发出一种名为主动治疗运动版本2（ATM2）的装置，以改善下腰痛患者的疼痛和关节活动范围（ROM）。然而，迄今为止，尚无研究通过基于ATM®2的运动来研究肌肉的生理变化。本研究旨在确定ATM2运动对健康受试者腰和下肢肌肉的收缩时间、后伸耐力、肌肉疲劳及躯干ROM的即时影响。
36名健康受试者（平均年龄=23.16±2.3岁）自愿参与本研究。受试者在躯干屈伸等长运动前后，使用坐位体前屈试验进行ROM测试，使用比林-索伦森试验进行背伸肌耐力测试，通过肌电图测量竖脊肌（ES）、腰多裂肌（LM）疲劳及俯卧位髋关节伸展时臀大肌（GM）的起始时间。
与运动前相比，运动后躯干前屈的ROM显著增加了7.9%（p<0.05）。运动后GM相对收缩起始时间显著降低（p<0.05）。运动后索伦森试验结果显示持续时间有增加趋势。然而，LM的肌肉疲劳显著增加（p<0.05），而ES的肌肉疲劳虽有减轻但无统计学意义。
本研究结果表明，基于ATM®2的运动是一种有效的运动方案，对健康受试者的生物力学有影响。临床试验注册号KCT0006728。临床试验注册日期：2021年11月9日。
