Schön-Ohlsson Christina U M, Willén Jan A G, Johnels Bo E A
Sahlgrenska Academy at Göteborg University, Institute of Neuroscience and Physiology, Göteborg, Sweden.
J Rehabil Med. 2006 Nov;38(6):360-7. doi: 10.1080/16501970600769214.
To assess test-retest reliability of the Posturo-Locomotion-Manual(PLM) test in patients with chronic low back pain.
A controlled study in which the PLM test was used repeatedly on patients with chronic low back pain and persons without back pain.
Twelve patients with treatment-resistant chronic low back pain, selected by 2 orthopaedic spine surgeons and 12 age- and sex-matched individuals with no back pain history.
An optoelectronic camera and a computer were used to quantify the performance during a simple test in which subjects picked up an object from the floor and transported it up to a shelf, thereby forcing the body through postural, locomotor and manual movements. The outcome measures were: movement time, simultaneity index and phase times for postural, locomotion and arm movement phases. Statistical analyses regarding intra-individual agreement between the measurements (reliability analysis) and changes over time were carried out.
The effect of test movement habituation was minimized when the lowest mean value of any of 3 consecutive measures (tri-average) was used. In the control group, variation between test occasions was small. In the group of patients with chronic low back pain there was a random measurement error before intervention (sensory motor learning). After intervention the PLM test had the same precision in both groups.
When the tri-average measure is used, the influence of test movement habituation is minimized and the optoelectronic PLM test is found to be reliable and responsive. It proved to be a useful tool to quantify dynamic performance in freely moving patients with chronic low back pain.
评估姿势 - 运动 - 手动（PLM）测试在慢性下腰痛患者中的重测信度。
一项对照研究，对慢性下腰痛患者和无背痛者重复使用PLM测试。
由2名骨科脊柱外科医生挑选出12例治疗抵抗性慢性下腰痛患者，以及12名年龄和性别匹配且无背痛病史的个体。
使用光电摄像机和计算机对受试者从地板上捡起一个物体并将其放置到架子上这一简单测试过程中的表现进行量化，此过程迫使身体进行姿势、运动和手动动作。结果测量指标为：运动时间、同步指数以及姿势、运动和手臂运动阶段的相位时间。进行了关于测量之间个体内一致性（信度分析）和随时间变化的统计分析。
当使用连续3次测量中任何一次的最低平均值（三次平均）时，测试运动习惯化的影响最小化。在对照组中，不同测试场合之间的差异较小。在慢性下腰痛患者组中，干预前存在随机测量误差（感觉运动学习）。干预后，PLM测试在两组中具有相同的精度。
当使用三次平均测量时，测试运动习惯化的影响最小化，并且发现光电PLM测试是可靠且有反应性的。它被证明是量化慢性下腰痛自由活动患者动态表现的有用工具。
