Balance Control Mechanisms During Perturbed Standing Across the Lifespan
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 41
- 试验地点
- 2
- 主要终点
- Contribution of the counter-rotation mechanism to centre of mass acceleration based on 3D movement registration and ground reaction forces
研究概览
简要总结
Falls are the leading cause of nonfatal injuries in children and elderly. To understand the causes of falling in these populations, fundamental knowledge of how ageing affects balance control is of utmost importance.
In general, two biomechanical mechanisms allow people to control balance; 1.moving the center of pressure within the base of support using ankle muscle activation; 2.counter-rotating segments around the center of mass. To understand how balance is controlled differently across the lifespan, 4 age groups (each N=20) will be compared to each other; i.e. prepubertal children (6-9y), postpubertal children (15-17y), young adults (18-24y), healthy non-falling older adults (65-80y). .
A force plate platform combined with 3D movement registration will be used to determine the biomechanical balance control strategy across the lifespan during unperturbed and perturbed standing. The innovative but focused scope of this study could provide a breakthrough in our biomechanical understanding of balance control and, in particular, the changes in limitations of balance control in childhood and an ageing (fall-prone) population. The gained fundamental knowledge could lead to unprecedented insights in the causes of falling across the lifespan and in possible targets for intervention.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 6 Years 至 80 Years（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •prepubertal children (6-9y)
- •postpubertal children (15-18y)
- •young adults (18-24y)
- •healthy non-falling older adults (65-80y) will be included if they 1) did not experience two or more falls during normal daily activities in the preceding year and 2) have no cognitive impairment (tested with Mini-Mental state examination).
排除标准
- •inability to speak and understand Dutch;
- •inability to maintain independent unsupported stance for 60 seconds;
- •current diagnosis of neurological or sensory disorders;
- •recurrent dizziness;
- •a history of orthopaedic disorders;
- •surgical operation of the lower extremity during last two years;
- •use of drugs affecting the CNS or known to affect balance control.
结局指标
主要结局
Contribution of the counter-rotation mechanism to centre of mass acceleration based on 3D movement registration and ground reaction forces
时间窗: day 1
The contribution of the counter-rotation mechanism (change in angular momentum (in kg.m2/s2)) to centre of mass acceleration in the sagittal and frontal plane will be calculated based on total body kinematics (SIMI motion - 3D movement registration) and kinetics (AMTI force plate) (calculations based on; van Dieen JH, van Leeuwen M, Faber GS. Learning to balance on one leg: motor strategy and sensory weighting. J Neurophysiol. 2015;114(5):2967-82.))
Contribution of the ankle strategy to centre of mass acceleration based on 3D movement registration and ground reaction forces
时间窗: day 1
The contribution of the ankle strategy (difference between the centre of pressure and the centre of mass (in kg.m2/s2)) to centre of mass acceleration in the sagittal and frontal plane will be calculated based on total body kinematics (SIMI motion - 3D movement registration) and kinetics (AMTI force plate) (calculations based on; van Dieen JH, van Leeuwen M, Faber GS. Learning to balance on one leg: motor strategy and sensory weighting. J Neurophysiol. 2015;114(5):2967-82.)
Balance Control; centre of mass acceleration based on 3D movement registration and ground reaction forces
时间窗: day 1
Centre of mass acceleration (in kg.m2/s2) (calculations based on; van Dieen JH, van Leeuwen M, Faber GS. Learning to balance on one leg: motor strategy and sensory weighting. J Neurophysiol. 2015;114(5):2967-82.)
次要结局
未报告次要终点
研究者
Pieter Meyns
Principal Investigator
Hasselt University