Physical Education Department, Northeastern University, Shenyang 110819, China.
Department of Physical Education, Beihang University, Beijing 100191, China.
Biosensors (Basel). 2020 Jul 8;10(7):75. doi: 10.3390/bios10070075.
A self-powered biosensor for monitoring the maximal lactate steady state (MLSS) during exercise has been developed for intelligently assisting training system. It has been presented to create poly (vinylidene fluoride) (PVDF)/Tetrapod-shaped ZnO (T-ZnO)/enzyme-modified nanocomposite film through an efficient and cost-effective fabrication process. This sensor can be readily attached to the skin surface of the tester. Due to the piezoelectric surface coupling effect, this biosensor can monitor/sense and analyze physical information in real-time under the non-invasive condition and work independently without any battery. By actively outputting piezoelectric signals, it can quickly and sensitively detect body movements (changes of joint angle, frequency relative humidity during exercise) and physiological information (changes of lactate concentration in sweat). A practical application has been demonstrated by an excellent professional speed skater (male). The purpose of this study is to increase the efficiency of MLSS evaluation, promote the development of piezoelectric surface coupling effect and motion monitoring application, develop an intelligently assisting training system, which has opened up a new direction for human motion monitoring.
已开发出一种用于运动中监测最大乳酸稳态 (MLSS) 的自供电生物传感器，以智能协助训练系统。该研究通过高效且具有成本效益的制造工艺，提出了制备聚偏二氟乙烯 (PVDF)/四足状氧化锌 (T-ZnO)/酶修饰纳米复合材料膜的方法。该传感器可以轻松地附着在测试者的皮肤表面。由于压电表面耦合效应，该生物传感器可以在非侵入条件下实时监测/感测和分析物理信息，并且无需任何电池即可独立工作。通过主动输出压电信号，它可以快速、灵敏地检测身体运动（关节角度变化、运动过程中相对湿度变化）和生理信息（汗液中乳酸浓度变化）。通过一位优秀的专业速滑运动员（男性）进行了实际应用展示。本研究的目的是提高 MLSS 评估的效率，促进压电表面耦合效应和运动监测应用的发展，开发智能辅助训练系统，为人体运动监测开辟了新的方向。
