CGU-BES Dataset for Fall and Activity of Daily Life

Fifteen healthy participants (11 males, 4 females; 21.8±1.8 yr; 167.7±6.0 cm; 63.0±10.1 kg) performed simulated falls and activities of daily living (ADLs). Every participant performed four simulated falls and eight other types of functional movements, all starting from walking. The four kinds of simulated falls are defined as a forward fall, a backward fall, a lateral fall toward the right-hand side, and a lateral fall toward the left-hand side. The eight types of ADLs are defined as continuous walk, hands raised and lowered, a forward jump, an upward jump, crouch, forward lying down, backward lying down, and stroll followed by standing then sitting. The protocol of this study was approved by the Research Ethics Committee of the Chang Gung Medical Foundation (IRB#101-0830B). All kinematic data were collected by a wearable wireless sensor system. The system contained a tri-axial accelerometer with a full-scale range of ±3.6 g with ±0.3% nonlinearity and a sensitivity of 300 mV/g (ADXL330, Analog Device, Cambridge, MA, USA), a tri-axial gyroscope with a full-scale range of ±400 degrees/sec (dps) and a sensitivity of 3.2 mV/dps (LYPR540AH, STMicroelectronics, Geneva, Switzerland), a microcontroller (MSP430F5438, Texas Instruments, Dallas, TX, USA), and a Bluetooth module (BTC-1022, Atech OEM Inc., Taipei, Taiwan). The sensor was attached to the anterior aspect of the chest using an elastic band. Trunk accelerations and angular velocities were digitized in parallel through a built-in 12-bit analog-digital converter, at a sampling rate of 200 Hz. The digital series were transmitted via Bluetooth to a personal computer.

15名健康受试者（11名男性，4名女性；年龄21.8±1.8岁；身高167.7±6.0 cm；体重63.0±10.1 kg）完成了模拟跌倒与日常活动（Activities of Daily Living，ADLs）测试。每名受试者均完成4次模拟跌倒与8种其他功能性动作，所有动作均以行走作为起始动作。其中4类模拟跌倒分别为前向跌倒、后向跌倒、右侧侧方跌倒与左侧侧方跌倒；8类日常活动则定义为持续行走、抬手与落手、向前跳跃、向上跳跃、下蹲、向前躺卧、向后躺卧，以及行走后依次完成站立与坐下的动作。本研究方案已获得长庚医疗财团法人研究伦理委员会批准（IRB#101-0830B）。所有运动学数据均通过可穿戴无线传感器系统采集，该系统包含：量程为±3.6g、非线性度±0.3%、灵敏度300mV/g的三轴加速度计（ADXL330，Analog Device，美国马萨诸塞州剑桥市）；量程为±400度/秒（dps）、灵敏度3.2mV/dps的三轴陀螺仪（LYPR540AH，STMicroelectronics，瑞士日内瓦）；型号为MSP430F5438的微控制器（Texas Instruments，美国得克萨斯州达拉斯市）；以及型号为BTC-1022的蓝牙模块（Atech OEM Inc.，中国台湾台北）。传感器通过弹性绑带固定于胸前正面，躯干加速度与角速度通过内置12位模数转换器并行数字化，采样率为200Hz，最终数字化序列通过蓝牙传输至个人计算机。