Lazzarini M'Lyn, Brismée Jean-Michel, Owens S Christopher, Dedrick Gregory S, Sizer Phillip S
Research Associate, Center for Rehabilitation Research, Texas Tech University Health Sciences Center, Lubbock, TX.
Professor, Center for Rehabilitation Research, Texas Tech University Health Sciences Center, Lubbock, TX.
J Manipulative Physiol Ther. 2014 Oct;37(8):586-92. doi: 10.1016/j.jmpt.2014.08.001. Epub 2014 Sep 4.
The purpose of this study was to investigate if differences in spinal height changes in healthy individuals were observed after a period of spinal unloading using repetitive as compared with sustained lumbar extension exercises.
This study used a pretest, posttest, crossover design. Asymptomatic participants were recruited using convenience sampling. Thirty-two participants (15 male; 17 female) without back pain were included in the data analysis (mean, 24.4 years; range, 20-41 years). Participants performed sustained or repetitive prone lumbar extension exercises after 1 hour of sustained spinal unloading. Spinal height was measured using a stadiometer before and after the repetitive and sustained prone lumbar extension exercises.
Paired t tests revealed no significant difference in spine height after repetitive (P = .774) or sustained (P = .545) prone lumbar extension after a period of spinal unloading. No significant difference between spinal height changes occurred between sustained (mean [SD], -0.28 [2.59] mm) and repetitive (mean [SD], -0.12 [2.42] mm) lumbar extension (P = .756).
In this group of asymptomatic individuals, sustained and repetitive lumbar extension exercises did not appear to affect spinal height after a period of spinal unloading.
本研究旨在调查在一段脊柱卸载期后，与持续腰椎伸展运动相比，重复进行腰椎伸展运动时，健康个体的脊柱高度变化是否存在差异。
本研究采用前测、后测、交叉设计。采用便利抽样法招募无症状参与者。数据分析纳入了32名无背痛的参与者（15名男性；17名女性）（平均年龄24.4岁；范围20 - 41岁）。参与者在持续脊柱卸载1小时后进行持续或重复的俯卧位腰椎伸展运动。在重复和持续的俯卧位腰椎伸展运动前后，使用身高计测量脊柱高度。
配对t检验显示，在一段脊柱卸载期后，重复（P = 0.774）或持续（P = 0.545）俯卧位腰椎伸展后，脊柱高度无显著差异。持续（平均[标准差]，-0.28 [2.59] mm）和重复（平均[标准差]，-0.12 [2.42] mm）腰椎伸展之间的脊柱高度变化无显著差异（P = 0.756）。
在这组无症状个体中，在一段脊柱卸载期后，持续和重复的腰椎伸展运动似乎并未影响脊柱高度。
