Amiri Pouya, Mohebbi Abolfazl, Kearney Robert
Department of Biomedical Engineering, McGill University;
Department of Biomedical Engineering, McGill University.
J Vis Exp. 2019 Sep 11(151). doi: 10.3791/60078.
Many components of the nervous and musculoskeletal systems act in concert to achieve the stable, upright human posture. Controlled experiments accompanied by appropriate mathematical methods are needed to understand the role of the different sub-systems involved in human postural control. This article describes a protocol for performing perturbed standing experiments, acquiring experimental data, and carrying out the subsequent mathematical analysis, with the aim of understanding the role of musculoskeletal system and central control in human upright posture. The results generated by these methods are important, because they provide insight into the healthy balance control, form the basis for understanding the etiology of impaired balance in patients and the elderly, and aid in the design of interventions to improve postural control and stability. These methods can be used to study the role of somatosensory system, intrinsic stiffness of ankle joint, and visual system in postural control, and may also be extended to investigate the role of vestibular system. The methods are to be used in the case of an ankle strategy, where the body moves primarily about the ankle joint and is considered a single-link inverted pendulum.
神经和肌肉骨骼系统的许多组成部分协同作用，以实现稳定、直立的人体姿势。需要通过适当的数学方法进行对照实验，以了解参与人体姿势控制的不同子系统的作用。本文描述了一个进行站立扰动实验、获取实验数据并进行后续数学分析的方案，目的是了解肌肉骨骼系统和中枢控制在人体直立姿势中的作用。这些方法产生的结果很重要，因为它们有助于深入了解健康的平衡控制，为理解患者和老年人平衡受损的病因奠定基础，并有助于设计改善姿势控制和稳定性的干预措施。这些方法可用于研究体感系统、踝关节固有刚度和视觉系统在姿势控制中的作用，也可扩展用于研究前庭系统的作用。这些方法将用于踝关节策略的情况，即身体主要围绕踝关节运动，被视为单连杆倒立摆。
