Parkinson Stephanie, Campbell Amity, Dankaerts Wim, Burnett Angus, O'Sullivan Peter
School of Physiotherapy and Curtin Health Innovation Research Institute, Curtin University, Perth, Western Australia 6845, Australia.
Man Ther. 2013 Oct;18(5):390-4. doi: 10.1016/j.math.2013.02.001. Epub 2013 Mar 7.
Sit-to-stand (STS) is a functional dynamic task, requiring movement of the lumbar spine, however, little is known about whether regional differences or between-gender differences exist during this task. The aim of this study was to confirm whether kinematic differences existed within regions of the lumbar spine during STS and also to determine whether between-gender differences were evident. An electromagnetic measurement device, recording at 25 Hz, determined how different lumbar spine regions (combined, lower and upper) moved during STS in 29 healthy participants (16 males, 13 females). Discrete outputs including mean range of motion (ROM), maximum and minimum were calculated for each lumbar spine region. Analyses of covariance (ANCOVA) with repeated measures were used to determine whether regional differences and between-gender differences were evident in the lumbar spine during STS. With the lumbar spine modelled as two segments, the lower lumbar (LLx) and upper lumbar (ULx) regions made different contributions to STS: F1, 27 = 21.8; p < 0.001. No between-gender differences were found with the lumbar spine modelled as a single region (combined lumbar: CLx), however, modelled as two regions there was a significant gender difference between the LLx and ULx regions: F1, 27 = 7.3 (p = 0.012). The results indicate that modelling the lumbar spine as a single segment during STS does not adequately represent lumbar spine kinematics and there are important gender differences. These findings also need to be considered when investigating STS in clinical populations.
从坐到站（STS）是一项功能性动态任务，需要腰椎运动，然而，对于在此任务过程中是否存在区域差异或性别差异知之甚少。本研究的目的是确认在STS过程中腰椎各区域内是否存在运动学差异，并确定性别差异是否明显。一个以25赫兹频率记录的电磁测量装置，测定了29名健康参与者（16名男性，13名女性）在STS过程中不同腰椎区域（整体、下部和上部）的运动情况。计算了每个腰椎区域的离散输出，包括平均运动范围（ROM）、最大值和最小值。采用重复测量的协方差分析（ANCOVA）来确定在STS过程中腰椎是否存在区域差异和性别差异。将腰椎建模为两个节段时，下腰椎（LLx）和上腰椎（ULx）区域对STS的贡献不同：F1, 27 = 21.8；p < 0.001。当将腰椎建模为单个区域（整体腰椎：CLx）时，未发现性别差异，然而，建模为两个区域时，LLx和ULx区域之间存在显著的性别差异：F1, 27 = 7.3（p = 0.012）。结果表明，在STS过程中将腰椎建模为单个节段不能充分代表腰椎的运动学，且存在重要的性别差异。在对临床人群进行STS研究时也需要考虑这些发现。
