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Assessing the Risk of Fall in Older People through Turning Test

机译:通过转向测试评估老年人跌倒的风险

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The feasibility of recognising elderly subjects at risk of falling is explored by generating a Biometric Signature Trajectory (BST) for each subject while turning. Turning is a risky activity for elderly subjects and can lead to falling as it needs greater centre of mass (COM) balance control. The study is based on 45 older and 10 younger subjects. The elderly subjects were categorized into two groups of elderly non-fallers and elderly multiple-fallers based on their history of fall. Subjects were asked to turn a full circle clockwise and then anti-clockwise without stopping between. The angular rotation of chest, pelvis, left legs, and right legs were recorded using a set of inertial sensors. For each subject a unique signature was generated based on a combination of the recorded data of different body parts. DTW (Dynamic Time Warping) was used to measure the similarity of the BST of younger subjects and elderly fallers and elderly non-fallers. The approach is described and it is shown that the proposed method has the potential of identifying elderly subjects with disturbed balance and history of multiple falls from the elderly subjects with no history of fall.
机译:通过在转身时为每个受试者生成生物特征签名轨迹(BST),探索了识别有跌倒风险的老年受试者的可行性。转向对于老年受试者是一项冒险的活动,可能会导致摔倒,因为它需要更大的质心(COM)平衡控制。这项研究基于45位年龄较大的受试者和10位较年轻的受试者。根据老年人的跌倒历史,将其分为两类:老年非跌倒者和老年多重跌倒者。要求受试者顺时针旋转一个完整的圆圈,然后逆时针旋转一个完整的圆圈,而不要在两者之间停下来。使用一组惯性传感器记录了胸部,骨盆,左腿和右腿的角度旋转。对于每个受试者,根据不同身体部位的记录数据的组合生成唯一的签名。使用DTW(动态时间规整)来测量年轻受试者与老年跌倒者和老年非跌倒者的BST相似度。描述了该方法,并且表明所提出的方法具有从没有跌倒历史的老年受试者中识别出平衡受​​到干扰并且多次跌倒的历史的老年受试者的潜力。

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