Chaikeeree Nithinun, Saengsirisuwan Vitoon, Chinsongkram Butsara, Boonsinsukh Rumpa
Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand; Division of Physical Therapy, Faculty of Health Sciences, Srinakharinwirot University, Nakhonnayok, Thailand.
Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand.
Gait Posture. 2015 Jan;41(1):313-5. doi: 10.1016/j.gaitpost.2014.09.011. Epub 2014 Sep 28.
Clinical Test for Sensory Interaction and Balance (CTSIB) is a simplified method for investigating the organization of multiple sensory inputs in postural control. The accuracy of the test is based partly on the foam types. Several types of foam are available, but the validity of these foams on CTSIB and the interaction of age and foam types have not been addressed. In this study, postural sway of young (21.6 ± 3.3 years) and older (53.2 ± 4.9 years) participants were assessed while standing on four types of foam: NeuroCom(®), sponge, Ethylene Vinyl Acetate (EVA), and memory foams. Postural sway during stance on solid floor and foams with eyes open and eyes closed were quantified by root-mean-square (RMS) of center of body mass acceleration in the mediolateral (ML) and anteroposterior (AP) directions using the acceleration-based OPAL system. Physical properties of foams including density, Young's modulus, and indentation force deflection (IFD) were determined. Results demonstrated that RMS-ML in older subjects was larger than younger subjects (p ≤ 0.001), especially when standing on the NeuroCom(®) foam with eyes closed (p = 0.001). There was an interaction of age and foam types as larger differences in RMS-ML were observed between young and older subjects on the NeuroCom(®) and EVA foams, but not the other foams. The sway characteristics were largest when standing on the NeuroCom(®) foam which demonstrated high density and high compliance. Our findings suggested the importance of foam selection in CTSIB on accurate postural sway analysis and balance assessment.
感觉交互与平衡临床测试（CTSIB）是一种用于研究姿势控制中多种感觉输入组织的简化方法。该测试的准确性部分基于泡沫类型。有几种类型的泡沫可供使用，但这些泡沫在CTSIB上的有效性以及年龄与泡沫类型的相互作用尚未得到探讨。在本研究中，对年轻（21.6±3.3岁）和年长（53.2±4.9岁）参与者在站立于四种类型的泡沫上时的姿势摆动进行了评估：NeuroCom（®）泡沫、海绵、乙烯醋酸乙烯酯（EVA）泡沫和记忆泡沫。使用基于加速度的OPAL系统，通过体重中心在内外侧（ML）和前后（AP）方向上加速度的均方根（RMS）来量化在坚实地面和泡沫上睁眼和闭眼站立时的姿势摆动。测定了泡沫的物理性质，包括密度、杨氏模量和压陷力变形（IFD）。结果表明，年长受试者的RMS-ML大于年轻受试者（p≤0.001），尤其是在闭眼站立于NeuroCom（®）泡沫上时（p = 0.001）。年龄与泡沫类型之间存在相互作用，因为在NeuroCom（®）泡沫和EVA泡沫上，年轻和年长受试者之间的RMS-ML差异较大，而在其他泡沫上则没有。站立在显示出高密度和高顺应性的NeuroCom（®）泡沫上时，摆动特征最大。我们的研究结果表明，在CTSIB中选择泡沫对于准确的姿势摆动分析和平衡评估非常重要。
