The effect of extensible and non-extensible lumbar belts on trunk muscle activity and lumbar stiffness in subjects with and without low-back pain
The effect of extensible and non-extensible lumbar belts on trunk muscle activity and lumbar stiffness in subjects with and without low-back pain
复制标题
DOI：
10.1016/j.clinbiomech.2019.04.019
复制
发表时间：
2019-07-01
影响因子：
1.8
通讯作者：
Lariviere, Christian
中科院分区：
文献类型：
--
作者：
Ludvig, Daniel;Preuss, Richard;Lariviere, Christian
背景资料：腰椎带已被证明会增加腰椎硬度，但目前尚不清楚这是否与躯干肌肉共同收缩有关，这将增加对脊柱的压力。据推测，腰带增加腰椎刚度增加腹内压，这将增加脊柱的稳定性，而不增加对spinity.Methods的压缩负荷：躯干肌肉活动和腰椎刚度和阻尼进行了测量，在健康和腰痛受试者在三个条件：没有腰带;穿着可扩展的腰带;穿着不可扩展的腰带。肌肉活动进行测量，而受试者进行控制的向前和向后20躯干摆动。腰椎刚度和阻尼进行了测量，通过施加随机连续扰动的胸部。调查结果：外斜肌活动减少时，穿着任何腰部带在所有阶段的运动，而腹直肌和髂肋肌活动减少的运动阶段的肌肉最活跃，而穿着任何带。无论系哪一条腰带，躯干的僵硬度都会大大增加。两种腰带之间的腰椎硬度或肌肉活动没有一致的差异。佩戴腰带对阻尼几乎没有影响。健康和腰痛population.Interpretation之间的任何措施没有组间差异：研究结果是一致的假设，即腰椎带可以增加脊柱的稳定性，通过增加腹内压，没有任何增加的压缩负荷对脊柱。研究结果也可以推广，第一次，与腰痛的主题。
Background: Lumbar belts have been shown to increase lumbar stiffness, but it is unclear if this is associated with trunk muscle co-contraction, which would increase the compression on the spine. It has been hypothesized that lumbar belts increase lumbar stiffness by increasing intra-abdominal pressure, which would increase spinal stability without increasing the compressive load on the spine.Methods: Trunk muscle activity arid lumbar stiffness and damping were measured in healthy and low-back pain subjects during three conditions: no lumbar belt; wearing an extensible lumbar belt; wearing a non-extensible lumbar belt. Muscle activity was measured while subjects performed controlled forward and backward 20 trunk sways. Lumbar stiffness and damping were measured by applying random continuous perturbation to the chest.Findings: External oblique activity was decreased when wearing either lumbar belt during all phases of movement, while rectus abdominis and iliocostalis activity were decreased during the phase of movement where the muscles were maximally active while wearing either belt. Trunk stiffness was greatly increased by wearing either belt. There were no consistent differences in either lumbar stiffness or muscle activity between the two belts. Wearing a lumbar belt had little to no effect on damping. There were no group differences in any of the measures between healthy and low-back pain populations.Interpretation: The findings are consistent with the hypothesis that lumbar belts can increase spinal stability by increasing intra-abdominal pressure, without any increase in the compressive load on the spine. The findings can also be generalized, for the first time, to subjects with low-back pain.