Electromyography Analysis of Human Activities Database 4

A group of 10 healthy subjects without any upper limb pathologies participated in the data collection process. A total of 8 activities are performed by each subject. The measurement setup consists of a 5-channel Noraxon Ultium wireless sEMG sensor system. Representative muscle sites of the forearm are identified and self-adhesive Ag/AgCl dual electrodes are placed. The signal (sEMG) recorded during an ADL activity is segmented into functional phases: 1) rest 2) action and 3) release. During the rest phase, the subject is instructed to rest the muscles in a natural way. In the action phase, the subject is asked to perform the relevant ADL and in the release phase, the subject has to bring the muscles to a rest state smoothly avoiding any sudden movements. In these measurements, subjects are directed to execute each activity in four different arm positions and three different body postures. So each activity is performed in 4 × 3 = 12 different scenarios.

一组10名无上肢病理的健康受试者参与了数据收集过程。每位受试者完成8项活动。测量装置包括一套5通道的Noraxon Ultium无线表面肌电图(sEMG)传感器系统。确定了前臂代表性肌肉位点，并放置了自粘性的Ag/AgCl双电极。在日常生活活动(ADL)过程中记录的信号(sEMG)被划分为功能阶段：1)休息阶段 2)动作阶段和3)释放阶段。在休息阶段，受试者被指导以自然方式放松肌肉。在动作阶段，受试者被要求执行相关的ADL，而在释放阶段，受试者需将肌肉平滑地恢复至休息状态，避免任何突兀的动作。在这些测量中，受试者被指导以四种不同的手臂姿势和三种不同的身体姿态执行每项活动。因此，每项活动均在4×3=12种不同的场景下进行。