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首页> 外文会议>Mediterranean Conference on Medical and Biological Engineering and Computing >Functional and Structural of the Erector Spinae Muscle during Isometric Lumbar Extension
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Functional and Structural of the Erector Spinae Muscle during Isometric Lumbar Extension

机译：肌脊柱延伸期间肌脊柱肌肌的功能和结构

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Study Design: cross-sectional study. Objectives: to compare erector spinae (ES) muscle fatigue between chronic non-specific lower back pain (CNLBP) sufferers and healthy subjects from a biomechanical perspective during fatiguing isometric lumbar extensions. Background: paraspinal muscle maximal contraction and fatigue are used as a functional predictor for disabilities. The simplest method to determine muscle fatigue is by evaluating the evolution during specific contractions, such as isometric contractions. There are no studies that evaluate the evolution of the ES muscle during fatiguing isometric lumbar extensions and analyse functional and architectural variables. Methods: In a pre-calibrated system, participants performed a maximal isometric extension of the lumbar spine for 5 and 30 seconds. Functional variables (torque and muscle activation) and architecture (pennation angle and muscle thickness) were measured using a load cell, surface electromyography and ultrasound, respectively. The results were normalised and a reliability study of the ultrasound measurement was made. Results: The ultrasound measurements were highly reliable, with Cronbach's alpha values ranging from 0.951 0.981. All measured variables shown significant differences before and after fatiguing isometric lumbar extension. Conclusion: During a lumbar isometric extension test, architecture and functional variables of the ES muscle could be analised using ultrasound, surface EMG and load cell. In adition, during an endurance test, ES muscle suffers an acute effect on architectural and functional variables.
机译：研究设计：横截面研究。目标：在疲劳等距腰部延伸期间将慢性非特异性下背部疼痛（CNLBP）患者患者和健康受试者与生物力学视角进行比较。背景：肩胛骨最大收缩和疲劳用作残疾的功能预测因子。确定肌肉疲劳的最简单方法是通过在特定收缩期间评估进化，例如等距收缩。没有研究在疲劳等距腰部延伸期间评估ES肌肉的演变并分析功能和架构变量。方法：在预校准的系统中，参与者在腰椎的最大等距延伸5和30秒进行。使用称重传感器，表面肌电学学和超声测量功能变量（扭矩和肌肉激活）和架构（缠绵结角和肌厚）。结果是标准化的，对超声测量进行了可靠性研究。结果：超声测量高度可靠，Cronbach的alpha值范围为0.951 0.981。所有测量变量显示疲劳等距腰延伸前后的显着差异。结论：在腰部等距延伸试验期间，可以使用超声波，表面EMG和称重传感分析ES肌肉的架构和功能变量。在追求中，在耐久性测试中，ES肌肉对建筑和功能变量遭受急性影响。

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