Quantification of lumbar stability by using 2 different abdominal activation strategies
Quantification of lumbar stability by using 2 different abdominal activation strategies
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DOI：
10.1016/j.apmr.2006.10.014
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发表时间：
2007-01-01
影响因子：
4.3
通讯作者：
McGill, Stuart M.
中科院分区：
文献类型：
--
作者：
Grenier, Sylvain G.;McGill, Stuart M.
目的：确定腹部空心技术是否比完整的腹部肌肉共同收缩更有效地稳定腰椎。设计：使用受试者内重复测量方差分析来检查将 4 种负载条件中的每一种与空心或支撑条件相结合对稳定性和压缩因变量的影响。还进行了模拟来评估一个人在空腹期间仅激活腹横肌的结果。设置：实验室。参与者：8 名健康男性（年龄范围，20-33 岁）。干预措施：在支撑双侧或双手不对称重量的同时，在腹部支具和空心支撑过程中记录肌电图和脊柱运动学。主要结果指标：计算脊柱稳定性指数和腰椎压力。结果：在模拟“理想情况”中，支具技术将稳定性提高了 32%，腰椎压力增加了 15%。腹横肌对支撑模式的稳定性贡献了 0.14%，压缩率降低了不到 0.1%。结论：无论低负荷腹横肌激活训练有什么好处，它都不可能是机械性的。使用腹腔或腹横肌来增强稳定性似乎没有机械原理。支撑创造了更好地增强稳定性的模式。
Objective: To determine whether the abdominal hollowing technique is more effective for lumbar spine stabilization than a full abdominal muscle cocontraction.Design: Within-subject, repeated-measures analysis of variance was used to examine the effect of combining each of 4 loading conditions with either the hollow or brace condition on the dependent variables of stability and compression. A simulation was also conducted to assess the outcome of a person activating just the transversus abdominis during the hollow.Setting: Laboratory. Participants: Eight healthy men (age range, 20-33y).Interventions: Electromyography and spine kinematics were recorded during an abdominal brace and a hollow while supporting either a bilateral or asymmetric weight in the hands.Main Outcome Measures: Spine stability index and lumbar compression were calculated.Results: In the simulation "ideal case," the brace technique improved stability by 32%, with a 15% increase in lumbar compression. The transversus abdominis contributed .14% of stability to the brace pattern with a less than 0.1% decrease in compression.Conclusions: Whatever the benefit underlying low-load transversus abdominis activation training, it is unlikely to be mechanical. There seems to be no mechanical rationale for using an abdominal hollow, or the transversus abdominis, to enhance stability. Bracing creates patterns that better enhance stability.