Assessing trunk motor variability in a changing spinal environment: an experimental study.

评估不断变化的脊柱环境中躯干运动的变异性：一项实验研究。

• 批准号: DDG-2015-00013
• 负责人: Descarreaux, Martin
• 金额: $ 0.73万
• 依托单位: Université du Québec à Trois-Rivières
• 依托单位国家: 加拿大
• 项目类别: Discovery Development Grant
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=612417
• 关键词: Assessing; trunk; motor; variability; changing

Motor variability is an important feature of human movement which can be measured using multiple parameters such as performance measures. The main objective of this proposal is to identify and characterize trunk neuromuscular and kinematic adaptations to a “changing spinal environment”. The proposed research program will include a series of experiments designed to each address a specific hypothesis related to trunk and spinal motor variability under varying mechanical and neurophysiological conditions that reflect daily activities. These studies will provide critical information regarding the development of acute and long term motor adaptation in the complex musculoskeletal spinal system. The results and knowledge derived from these studies could, in the long run, provide new insights on how intrinsic spinal variability can be exploited as a source of biomechanical variations without compromising work-related or other type of performances. The research program could lead to the development of innovative applications in sport performance and work productivity, standardised functional spinal evaluation and biomedical engineering diagnostic tools, as well as progress in risk assessment strategies in ergonomics. All the proposed experiments are based on the assessment of similar motor variability variables under varying experimental conditions. Independent groups of healthy adult volunteers will be recruited to participate in each of these experiments where they will be asked to perform a series of standardized task involving spinal movement and stabilization. The current proposal seeks to investigate if spinal adaptations in movement patterns and muscle recruitment are task-specific, or if individuals use a similar and “rather typical” adaptation pattern across a range of tasks. We will try to answer the following research questions: [1] Investigate how changes in spinal stabilisation mechanisms affect muscle recruitment strategies and trunk kinematics during voluntary trunk movement [2] Determine how these changes also affect the muscle recruitment strategies and trunk kinematics during fast-adaptation reactive trunk movements [3] Investigate how nociceptive segmental inputs affect muscle recruitment strategies and trunk kinematics, and [4] Investigate how sustained cyclic exercises modify muscle recruitment strategies and trunk kinematics. Neuromuscular motor variability will be quantified using the spatial representation of muscular activity in EMG matrices as well as movement patterns during the various experimental protocols. My goal, with the present proposal, is to create an educational environment for graduate students that will foster interdisciplinary collaboration in order to ensure both diversified and high quality training of young researchers in the fields of motor control, biomechanics and signal processing.

运动变异性是人类运动的重要特征，可以使用多个参数（例如性能测量）来测量。该提案的主要目的是识别和表征对“不断变化的脊柱环境”的树干神经肌肉和运动学适应。拟议的研究计划将包括一系列实验，旨在解决每个反映日常活动的机械和神经生理条件下，解决与躯干和脊柱运动变异性有关的特定假设。这些研究将提供有关复杂肌肉骨骼脊柱系统中急性和长期运动适应发展的关键信息。从长远来看，从这些研究中得出的结果和知识可以提供有关如何将固有性脊柱变异性作为生物力学变异来源的新见解，而不会损害与工作相关或其他类型的表现。该研究计划可能导致运动性能和工作生产力，标准化功能性脊柱评估和生物医学工程诊断工具的创新应用以及人体工程学风险评估策略的进展。所有提出的实验均基于对不同实验条件下类似运动变异性变量的评估。独立的健康成人志愿者将被招募，以参加每个实验中的每个实验，在那里他们将被要求执行一系列标准化任务涉及脊柱运动和稳定。当前的建议旨在调查运动模式和肌肉招募中的脊柱适应是否特定于任务，或者个人是否在一系列任务中使用类似的“典型”适应模式。 We will tr​​y to answer the following research questions: [1] Investigate how changes in spinal stabilizer mechanisms affect muscle recruitment strategies and trunk kinematics during voluntary trunk movement [2] Determine how these changes also affect the muscle recruiting strategies and trunk kinematics during fast-adaptation reactive trunk movements [3] Investigate how nociceptive segmental inputs affect muscle recruiting strategies and trunk kinematics, [4]研究持续的循环锻炼如何修饰肌肉招募策略和躯干运动学。通过在各种实验方案期间，将使用EMG矩阵中肌肉活性以及运动模式的空间表示神经肌肉运动的变异性。我的目标是针对目前的建议，是为研究生创造一个教育环境，以促进跨学科的合作，以确保在运动控制，生物力学和信号处理领域对年轻研究人员进行多元化和高质量的培训。