Alexander K M, LaPier T L
Department of Physical Therapy, Idaho State University, Pocatello 83209-8045, USA.
J Orthop Sports Phys Ther. 1998 Dec;28(6):378-83. doi: 10.2519/jospt.1998.28.6.378.
Balance reactions are not routinely evaluated in patients with low back pain. The purpose of this study was to determine if there were differences in static balance and weight distribution between subjects with unilateral low back pain (N = 15) and pain-free controls (N = 15). Measurements included limits of stability (%LOS), target sway, weight distribution on each lower extremity in quiet standing, and center of gravity with measurements of maximal excursion in anterior/posterior and medial/lateral directions. Independent t tests were used to compare data between groups. Compared with control subjects, subjects with low back pain demonstrated greater anterior-posterior center of gravity excursion and total center of gravity excursion with eyes open and greater anterior-posterior, medial-lateral, and total center of gravity excursion, target sway, and %LOS with eyes closed. There was no difference in the weight-bearing distribution between groups. This study suggests that static balance in patients with chronic low back pain may be impaired and should be thoroughly evaluated and integrated into physical therapy treatment programs.
平衡反应在腰痛患者中并非常规评估项目。本研究的目的是确定单侧腰痛患者（N = 15）与无疼痛对照组（N = 15）在静态平衡和体重分布方面是否存在差异。测量指标包括稳定性极限（%LOS）、目标摆动、安静站立时每个下肢的体重分布以及重心，同时测量前后和内外方向的最大偏移。采用独立t检验比较组间数据。与对照组相比，腰痛患者在睁眼时表现出更大的前后重心偏移和总重心偏移，闭眼时表现出更大的前后、内外和总重心偏移、目标摆动以及%LOS。两组间负重分布无差异。本研究表明，慢性腰痛患者的静态平衡可能受损，应进行全面评估并纳入物理治疗方案。
