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首页> 外文会议>IEEE International Symposium on Medical Measurements and Applications >Gait stability indicators as extracted by a single wearable inertial sensor in young adolescents during smartphone use
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Gait stability indicators as extracted by a single wearable inertial sensor in young adolescents during smartphone use

机译：在智能手机使用期间，由单个可穿戴惯性传感器提取的步态稳定性指标在青少年中

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The study of the potential risks associated with the daily use of smartphone in children and adolescents is matter of interest, since smartphones are often used while performing other motor activities like walking and could generate distraction and accidents. The purpose of this study is to check if selected parameters of stability calculated from accelerometer data coming from an inertial measurement unit (IMU) are able to highlight differences in gait stability of young adolescents caused by using a smartphone. Thirty-one adolescents (age 12 years ± 0.5 years) participated in the study. They were asked to walk along a 12-m long straight path under two different conditions: normal walking, and walking using a smartphone (texting activity). Gait signals were acquired by means of a single wireless IMU positioned on the back of the trunk. The acceleration along the three components (AP-Antero-posterior, VT-Vertical and ML-Medio-lateral) were filtered and post processed to extract the following gait stability parameters: the Root Mean Square value (RMS) of each acceleration component, the RMS of the normalized version of each acceleration component (obtained by dividing it by the acceleration magnitude), and the RMS value of the jerk magnitude. The use of the smartphone determines a significant effect on most studied parameters: in particular, during smartphone use while walking the RMS, the jerk RMS, and the normalized component of RMS along the vertical direction decrease, while the normalized component of the RMS normalized along the ML direction increases. The results suggested that the RMS parameters could be good candidates to monitor the gait stability in real-time, and to provide to the subjects information on their potential risk of fall.
机译：对与儿童和青少年日常使用智能手机相关的潜在风险的研究引起了人们的兴趣，因为智能手机经常在执行其他运动活动（如步行）时使用，并可能引起分心和事故。这项研究的目的是检查根据来自惯性测量单元（IMU）的加速度计数据计算出的选定稳定性参数是否能够突出显示由于使用智能手机而导致的青少年步态稳定性差异。 31名青少年（年龄12岁±0.5岁）参加了该研究。他们被要求在两种不同条件下沿着12米长的直线路径行走：正常行走和使用智能手机行走（发短信）。步态信号是通过位于行李箱背面的单个无线IMU来获取的。过滤沿三个分量（AP-前-后，VT-垂直和ML-中-外侧）的加速度，并进行后处理，以提取以下步态稳定性参数：每个加速度分量的均方根值（RMS），每个加速度分量的规范化版本的RMS（通过将其除以加速度幅度而获得），以及加加速度幅值的RMS值。智能手机的使用决定了对大多数研究参数的显着影响：特别是在智能手机使用过程中，行走时的RMS，加速度RMS和沿垂直方向的RMS归一化分量减小，而RMS的归一化分量沿垂直方向归一化ML方向增加。结果表明，RMS参数可能是实时监测步态稳定性的良好候选者，并向受试者提供有关其潜在跌倒风险的信息。

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