OxBioZ: Wearable Continuous Bioimpedance Monitoring System and Multi-Activity Dataset with Physiological and Motion Signals

Vital sign monitoring and body composition analysis are both used for various medical applications. However, there is a lack of devices capable of conducting continuous vital sign monitoring and body composition analysis simultaneously during daily activities. We present a wearable device named ‘OxBioZ’, capable of performing (i) continuous single-frequency bioimpedance analysis, (ii) multi-frequency bioimpedance analysis, (iii) electrocardiography (ECG), and (iv) inertial measurements. This allows continuous estimation of cardiac function, respiration analysis and total body water (TBW) during daily activities without the needs for multiple devices or specialized monitoring protocols. Leveraging OxBioZ, we collected a comprehensive multi-activity dataset from 21 participants, totaling over 1000 min of synchronized bioimpedance, motion, and ground-truth physiological measurements. Baseline studies on vital sign estimation and TBW assessment demonstrate the platform's feasibility and provide a benchmark dataset for advancing bioimpedance-driven wearable health analytics.