axivity-ax6-left-forearm-nondominant

6-axis actigraphy (translation and rotation) using Axivity AX6 (similar to AX3 used in UK BioBank), configured with 100Hz sampling frequency, 16bit resolution and 2000dps gyro/rotation.<br>Attached with a velcro to the exterior of a cotton wrist band with arrow facing down towards the ground/back when arms are in a natural position along the body, on the left forearm (non-dominant arm).<br>Started acquisition in March 2021.<br>Each file represents one acquisition session of about 1 week. Multiple files can be concatenated to study a longer time period.

本数据集采用Axivity AX6设备采集支持平移与旋转信号采集的6轴活动记录仪（6-axis actigraphy）数据，该设备与英国生物银行（UK BioBank）所使用的AX3设备型号相近，配置参数为100Hz采样频率、16位分辨率，陀螺仪旋转量程达2000度每秒（dps）。
设备通过维可牢尼龙搭扣（velcro）固定于棉质腕带外侧，佩戴于非利手左臂前臂；当手臂自然垂于身体两侧时，设备箭头朝向地面或手背方向。
数据采集工作于2021年3月启动。
每个文件对应单次约1周的采集会话，可将多个文件拼接以开展更长时间跨度的研究。