TY - JOUR JF - umsha JO - Avicenna J Clin Med VL - 28 IS - 2 PY - 2021 Y1 - 2021/9/01 TI - Comparison of Lumbopelvic Rhythm between Healthy Individuals and Lumbar Clinical Instability Patients TT - مقایسه ریتم کمری-لگنی افراد سالم و بیماران مبتلا به بی‌ثباتی بالینی ستون فقرات کمری N2 - Background and Objective: The lumbopelvic rhythm is the coordinated movement of the lumbar spine and hip during trunk flexion and return. It is recognized as a clinical indicator of low back pain (LBP); nonetheless, the reported patterns of lumbopelvic rhythm in patients with LBP are inconsistent. The investigation of more homogeneous subgroups of patients with LBP is essential to clarify the lumbopelvic rhythm patterns. Therefore, the present study aimed to compare lumbopelvic rhythm between healthy individuals and patients with lumbar clinical instability. Materials and Methods: A total of 44 subjects (22 healthy cases and 22 lumbar clinical instability (LCI) patients) participated in the present study. The kinematic parameters during the trunk flexion and return task were recorded using a Qualisys motion capture system. Hip flexion angle, lumbar flexion angle, and lumbopelvic rhythm were statistically analyzed in every 25% of the flexion and return phase of flexion. Data were analyzed using Kolmogorov-Smirnov, Chi-square, and independent t-test. Results: In the second quarter of trunk flexion, the flexion angle of the lumbar spine was larger in the lumbar clinical instability group, as compared to that in the control group (P=0.016). Furthermore, the hip flexion angle was smaller in the lumbar clinical instability group, in comparison with that in the control group (P=0.011). Conclusion: These results show that the lumbopelvic rhythms are different among healthy subjects and patients with lumbar clinical instability. SP - 95 EP - 103 AU - Pouretezad, Mohammad AU - Zarrin, Milad AU - Salehi, Reza AU - Negahban, Hossein AU - Shaterzadeh Yazdi, Mohammad Jafar AU - Mehravar, Mohammad AD - M.Sc Student in Physiotherapy, Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran KW - Biomechanics KW - Kinematic KW - Low Back Pain UR - http://sjh.umsha.ac.ir/article-1-2249-en.html DO - 10.52547/ajcm.28.2.95 ER -