Influence of the craniomandibular system on human posture control during dynamic balance tasks

动态平衡任务中颅颌系统对人体姿势控制的影响

• 批准号: 427937447
• 负责人: Professor Dr. Marc Schmitter
• 金额: --
• 依托单位: Institut für Sport und Sportwissenschaft
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/427937447?language=en
• 关键词: Influence; craniomandibular; system; human; posture

Epidemiological studies show a high comorbidity of dysfunctions in the jaw and face area with the musculoskeletal complaints. In the clinical settings of dentistry, orthopedics and physiotherapy the pathophysiological effects of the craniomandibular system (CMS) via the fascial-muscle-chains were shown to be able to cause whole-body disorders. Based on these findings, cost-intensive and maximally invasive therapy models are proposed.Neuroanatomical and neurophysiological studies indicate that there are functional connections of the CMS with the postural control system. The effects of biting activities were visible as an increased spinal excitability via the soleus H-reflex as well as a generally increased excitability of the motor control system. A number of studies showed that the biting activities may have a stabilizing effect on postural control under static conditions, a reduced variability of muscular co-contraction patterns as well as reduced fluctuations of the trunk and head in an upright position were also reported. In addition, there are studies indicating that patients with an insufficient dentition may have an increased risk of falling. However, to date there are no controlled studies investigating the potential effects of biting activities during dynamic balance tasks.Addressing this research deficit, the present follow-up proposal aims to enhance the interdisciplinary work of the two working groups from the DFG fund "Influence of the craniomandibular system the postural control of people in dynamic balance tasks”. This follow-up proposal focuses on two questions: (1) Does submaximal jaw clenching have acute positive effects on performance when solving a dynamic steady-state balance task? (2) Can submaximal jaw clenching training augment the training of a dynamic steady-state balance task and does this lead to transfer effects on a dynamic precision task? Against this background, the movements of the participants when solving a dynamic steady-state balance task and a dynamic precision task were measured on the kinematic and muscular levels and joint angles were reconstructed with a biomechanical multi-body model. To answer these two questions, the resulting time series are analyzed by use of up-to-date methods from the field of motor control (e.g. Uncontrolled-Manifold analysis).With this interdisciplinary research approach at the interface of dentistry and human movement science, dynamic balance tasks were examined for the first time in a structured manner in order to more comprehensively understand the effects of controlled motor activity of the CMS on postural control processes. The findings can help to critically question the pathophysiological trivial models and to examine application-related questions regarding the described effects of biting activities, e.g. for rehabilitation aspects.

流行病学研究表明，颌骨和面部功能障碍与肌肉骨骼疾病有很高的共病率。在牙科、骨科和物理治疗的临床环境中，颅下颌系统（CMS）通过筋膜肌肉链的病理生理效应被证明能够引起全身疾病。神经解剖学和神经生理学研究表明，CMS与姿势控制系统存在功能联系。通过比目鱼肌H-反射以及运动控制系统的兴奋性普遍增加，可以看出咬活动的影响是脊髓兴奋性增加。许多研究表明，在静态条件下，咬合活动可能对姿势控制具有稳定作用，还报告了肌肉共同收缩模式的可变性减少以及躯干和头部在直立位置的波动减少。此外，有研究表明，牙列不足的患者可能会增加跌倒的风险。然而，到目前为止，还没有对照研究调查的潜在影响，咬活动在动态平衡tasks. Adding这一研究赤字，目前的后续建议，旨在加强跨学科的工作，两个工作组从DFG基金“颅下颌系统的影响，姿势控制的人在动态平衡任务”。这个后续的建议集中在两个问题：（1）次最大的咬紧牙关是否有急性积极的影响时，解决一个动态稳态平衡任务的表现？(2)次极量咬紧牙关训练是否能增强动态稳态平衡任务的训练，这是否会导致动态精确任务的转移效应？在此背景下，解决动态稳态平衡任务和动态精度任务时的运动的参与者进行了测量的运动学和肌肉水平和关节角度重建与生物力学多体模型。为了回答这两个问题，通过使用来自电机控制领域的最新方法来分析所得到的时间序列（例如，不受控制的流形分析）。在牙科和人体运动科学的界面上，为了更全面地了解CMS的受控运动活动的影响，首次以结构化的方式检查了动态平衡任务关于姿势控制过程。研究结果可以帮助批判性地质疑的病理生理学琐碎的模型，并检查应用相关的问题，关于所描述的影响咬活动，例如，康复方面。