Department of Physical Therapy, Tzu Chi University, Hualien, Taiwan.
Spine (Phila Pa 1976). 2010 Jan 1;35(1):E1-7. doi: 10.1097/BRS.0b013e3181c47a0e.
A cross-sectional study to examine the sagittal kinematics of spine and lower limb movement during sit-to-stand (STS).
To describe the sagittal kinematics of the spine and lower limb in healthy older adults during STS from 2 seat heights.
Older adults with age-related changes in the neuromusculoskeletal system are likely to have difficulty in STS. However, little is known about movement of the spinal regions and their interaction with the lower limb during STS, and the effect of seat height.
Thirty-two healthy older adults aged over 60 years were videotaped performing STS from 2 seat heights. A 2-dimensional video motion analysis system with a revised sagittal model was used to measure angular displacement and velocity for the cervical, thoracic, lumbar spine, and the lower limb joints.
Concurrent flexion in the hip joint and lumbar spine was accompanied by extension in the thoracic, lower, and upper cervical spine as the trunk leaned forward. After the buttocks lifted off (LO) the chair, the movement interaction in the spine and hip joint was reversed. Some significant age-related changes during STS included downward head tilt at LO, decreased lumbar range of motion, and a large between-participant variation in the movement ratios. Statistically significant differences in the temporal parameters, angular displacement, and velocity were also found when standing from a lower chair.
This study provides a detailed description of STS in healthy older adults, which has implications for rehabilitation of elderly patients who have difficulty with this activity. Clinicians need to be aware of the concurrent contribution of the hip joint and lumbar spine to trunk forward lean, the importance of thoracic extension during the pre-LO phase and the downward gaze at LO in healthy older adults.
一项横断面研究，旨在检查坐站（STS）过程中脊柱和下肢运动的矢状面运动学。
描述 2 种座椅高度下健康老年人 STS 时脊柱和下肢的矢状面运动学。
年龄相关的神经肌肉骨骼系统变化的老年人可能在 STS 方面存在困难。然而，对于脊柱区域在 STS 期间的运动及其与下肢的相互作用，以及座椅高度的影响知之甚少。
对 32 名年龄在 60 岁以上的健康老年人进行了从 2 种座椅高度进行 STS 的录像。使用二维视频运动分析系统和修订的矢状面模型来测量颈椎、胸椎、腰椎和下肢关节的角位移和速度。
髋关节和腰椎同时屈曲伴随着胸椎、腰椎和上颈椎伸展，当躯干向前倾斜时。臀部离开（LO）椅子后，脊柱和髋关节的运动相互作用发生逆转。STS 期间的一些与年龄相关的显著变化包括 LO 时头部向下倾斜，腰椎活动范围减小，以及运动比例的个体间差异较大。从较低的椅子站起来时，时间参数、角位移和速度也存在显著差异。
本研究详细描述了健康老年人的 STS，这对康复有困难的老年患者具有重要意义。临床医生需要意识到髋关节和腰椎对躯干前倾的共同贡献，在 LO 前阶段胸伸展的重要性以及健康老年人 LO 时的向下注视。
