上肢肌肉激活模式预测通过协同推断和电肌图驱动建模.
Shadman Tahmid1, Josep M Font-Llagunes2, James Yang1
1Human-Centric Design Research Lab, Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409.
Journal of biomechanical engineering
|October 30, 2023
概括
这项研究提出了一种新方法,使用表面电肌图 (EMG) 和肌肉协同作用来预测深层肌肉激活. 这种方法可以改善神经肌肉疾病患者的肌肉力量和关节扭矩估计.
科学领域:
- 生物力学 生物力学
- 神经肌肉生理学 神经肌肉生理学
- 康复工程 康复工程 康复工程
背景情况:
- 精确测量肌肉力量对于理解神经肌肉疾病至关重要,但具有挑战性.
- 表面电肌图 (EMG) 可以测量表面肌肉激活,但深层肌肉激活很难以非侵入的方式进行评估.
- 现有的仅使用表面电极的EMG驱动型号可能会低估净联合扭矩.
研究的目的:
- 开发和验证一种用于预测上肢深部肌肉激活的新方法.
- 通过结合未测量的肌肉激活的预测,提高EMG驱动的肌肉骨模型的准确性.
- 为了个性化肌肉骨模型与特定的肌参数.
主要方法:
- 采用了混合方法,将EMG驱动的肌肉骨模型与肌肉协同作用相结合.
- 该方法通过跟踪反向动态的关节时刻来反复预测个体未测量的肌肉激活.
- 肌肉协同作用被用来确定协同作用向量的重量,用于预测肩膀和肘部肌肉的激活.
主要成果:
- 该方法准确地预测了单个未测量的肌肉激活,实现了高相关系数 (肘部R=0.99,肩部R=0.92).
- 对于复杂的五度自由度 (DoF) 任务,预测准确度达到R=0.71.1.
- 进行了肌参数 (最佳纤维长度,肌松长度,最大同位力) 的个性化.
结论:
- 提出的方法有效地预测了深层肌肉激活的非侵入性,克服了仅表面EMG的局限性.
- 这种方法为改善神经肌肉疾病患者肌肉功能的评估提供了有前途的工具.
- 该方法在各种上肢任务中的准确性支持其在康复和临床环境中的潜在应用.
更多相关视频
08:48Combining Multiple Data Acquisition Systems to Study Corticospinal Output and Multi-segment Biomechanics
Published on: January 9, 2016
7.0K
09:14Surface Electromyographic Biofeedback as a Rehabilitation Tool for Patients with Global Brachial Plexus Injury Receiving Bionic Reconstruction
Published on: September 28, 2019
11.5K
相关概念视频
Excitation-Contraction Coupling in Skeletal Muscles
8.4K
Excitation-contraction coupling is a series of events that occur between generating an action potential and initiating a muscle contraction. It occurs at the triad, a structure found in skeletal muscle fibers that comprise a T-tubule and terminal cisternae of the sarcoplasmic reticulum on each side. These triads are visible in longitudinally sectioned muscle fibers. They are typically located at the A-I junction — the junction between the A and I bands of the sarcomere.
When an action...
When an action...
8.4K
Muscle Coordination and Action
1.5K
Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
1.5K
Motor Unit Stimulation
1.6K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
1.6K
