Department of Physical Therapy, Loma Linda University, California 92350, USA.
J Geriatr Phys Ther. 2012 Jan-Mar;35(1):15-9. doi: 10.1519/JPT.0b013e31821cb0ed.
Falls are common and often take place in the home. Risk of fall increases if the environment is dimly lit. Longer sitting pause times, before standing, might improve postural stability after standing from a supine position. The purpose of this investigation was to measure the effects of sitting pause times on postural sway velocity immediately following a supine-to-standing transfer in a dimly lit room in older and younger adult women.
Five women aged 65 to 70 years and 5 aged 23 to 30 years participated in the study. On each of 2 consecutive days, study participants lay on a mat table with their eyes closed for 45 minutes before performing a supine-to-standing transfer in a dimly lit room. Sitting pause times of 2 seconds and 30 seconds preceded the transfers.
Mean postural sway velocity for the whole sample and for younger and older groups was less after a 30-second pause time than that after a 2-second pause time (sample, P = .001; young, P = .019; old, P = .021). No significant difference in mean postural sway velocity was observed between the 2 groups (P > .05).
Total mean postural sway velocity was less when study participants performed a sitting pause of 30 seconds before standing in a dimly lit room. These results suggest that longer sitting pause times may provide improved adaptability to dimly lit environments contributing to improved postural stability.
跌倒在日常生活中很常见，且常发生在居家环境中。如果环境光线昏暗，跌倒的风险将会增加。在从仰卧位起身前，增加坐立停顿时间可能会改善从仰卧位起身时的姿势稳定性。本研究的目的是测量在昏暗房间内，从仰卧位起身时，坐立停顿时间对老年人和年轻成年女性姿势摆动速度的影响。
5 名年龄在 65 至 70 岁之间的女性和 5 名年龄在 23 至 30 岁之间的女性参加了这项研究。在连续 2 天内，每位研究参与者都在铺有垫子的桌子上闭眼躺 45 分钟，然后在昏暗的房间内从仰卧位起身。在进行转移前，有 2 秒和 30 秒的坐立停顿时间。
在整个样本中，以及在年轻组和老年组中，与 2 秒停顿时间相比，30 秒停顿时间后的平均姿势摆动速度更低（样本，P=.001；年轻，P=.019；老年，P=.021）。两组之间的平均姿势摆动速度没有显著差异（P>.05）。
当研究参与者在昏暗的房间里坐立停顿 30 秒后再起身时，总平均姿势摆动速度更低。这些结果表明，在昏暗环境中，更长的坐立停顿时间可能会提供更好的适应性，从而改善姿势稳定性。
