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Sensors 2017, 17(10), 2373;

Design of a Wireless Sensor System with the Algorithms of Heart Rate and Agility Index for Athlete Evaluation

1,* and 2,*
College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China
Department of IT Fusion Technology, Graduate School, Chosun University, Gwangju 61452, Korea
Authors to whom correspondence should be addressed.
Received: 12 September 2017 / Revised: 14 October 2017 / Accepted: 15 October 2017 / Published: 17 October 2017
(This article belongs to the Special Issue Wearable and Ambient Sensors for Healthcare and Wellness Applications)
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Athlete evaluation systems can effectively monitor daily training and boost performance to reduce injuries. Conventional heart-rate measurement systems can be easily affected by artifact movement, especially in the case of athletes. Significant noise can be generated owing to high-intensity activities. To improve the comfort for athletes and the accuracy of monitoring, we have proposed to combine robust heart rate and agility index monitoring algorithms into a small, light, and single node. A band-pass-filter-based R-wave detection algorithm was developed. The agility index was calculated by preprocessing with band-pass filtering and employing the zero-crossing detection method. The evaluation was conducted under both laboratory and field environments to verify the accuracy and reliability of the algorithm. The heart rate and agility index measurements can be wirelessly transmitted to a personal computer in real time by the ZigBee telecommunication system. The results show that the error rate of measurement of the heart rate is within 2%, which is comparable with that of the traditional wired measurement method. The sensitivity of the agility index, which could be distinguished as the activity speed, changed slightly. Thus, we confirmed that the developed algorithm could be used in an effective and safe exercise-evaluation system for athletes. View Full-Text
Keywords: heart rate detection; agility index; athlete evaluation heart rate detection; agility index; athlete evaluation

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Li, M.; Kim, Y.T. Design of a Wireless Sensor System with the Algorithms of Heart Rate and Agility Index for Athlete Evaluation. Sensors 2017, 17, 2373.

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