Ebert Ryan, Campbell Amity, Kemp-Smith Kevin, O'Sullivan Peter
School of Physiotherapy, Curtin Health Innovation Research Institute, Curtin University, GPO Box U 1987, Perth, WA 6845, Australia.
Man Ther. 2014 Apr;19(2):114-8. doi: 10.1016/j.math.2013.08.004. Epub 2013 Sep 4.
Lumbar side bending movements coupled with extension or flexion is a known low back pain (LBP) risk factor in certain groups, for example, athletes participating in sports such as hockey, tennis, gymnastics, rowing and cricket. Previous research has shown that sagittal spinal postures influence the degree of spinal rotation, with less rotation demonstrated at end of range extension and flexion. To date it is unknown whether sagittal spinal postures influence side bending. The aim of this study was to determine whether side bend range of motion (ROM) of the lumbar spine is decreased in end-range flexion and extension postures compared to a neutral spine. Twenty subjects between 18 and 55 years of age [mean age = 22.8 yrs (6.8)] with no history of LBP were recruited for this study. Upper (L1-L3) and lower (L3-L5) lumbar side bend, were measured utilising a 14 camera system (Vicon, Oxford metrics, inc.) in end-range flexion, extension and neutral postures, in both sitting and standing positions. The results revealed no statistically significant difference in upper and lower lumbar side bend ROM in an end-range flexion posture compared to a neutral spinal posture. A reduction was found in the range of upper and lower lumbar side bend ROM in an end-range extended posture (p < 0.05), compared to neutral and end range flexion postures. This ROM reduction was found in sitting and standing. These findings allow clinicians to better interpret combined movements involving side bending of the lumbar spine in clinical and real life settings.
腰椎侧屈运动与伸展或屈曲相结合是某些人群中已知的下腰痛（LBP）风险因素，例如，参加曲棍球、网球、体操、划船和板球等运动的运动员。先前的研究表明，矢状面脊柱姿势会影响脊柱旋转程度，在伸展和屈曲范围末端的旋转较少。迄今为止，尚不清楚矢状面脊柱姿势是否会影响侧屈。本研究的目的是确定与中立脊柱相比，腰椎在终末范围屈曲和伸展姿势下的侧屈活动度（ROM）是否降低。本研究招募了20名年龄在18至55岁之间[平均年龄 = 22.8岁（6.8）]且无下腰痛病史的受试者。使用14台摄像机系统（Vicon，牛津测量公司）在终末范围屈曲、伸展和中立姿势下，于坐姿和站姿时测量上腰椎（L1-L3）和下腰椎（L3-L5）的侧屈。结果显示，与中立脊柱姿势相比，终末范围屈曲姿势下的上腰椎和下腰椎侧屈ROM无统计学显著差异。与中立和终末范围屈曲姿势相比，终末范围伸展姿势下的上腰椎和下腰椎侧屈ROM降低（p < 0.05）。这种ROM降低在坐姿和站姿时均被发现。这些发现使临床医生能够在临床和现实生活环境中更好地解释涉及腰椎侧屈的联合运动。
