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Journal of Medical and Biological Engineering

, Volume 38, Issue 4, pp 544–555 | Cite as

Aerobic Exercise Recognition Through Sparse Representation Over Learned Dictionary by Using Wearable Inertial Sensors

  • Ming Guo
  • Zhelong WangEmail author
  • Ning Yang
Original Article
  • 167 Downloads

Abstract

Aerobic exercise is conducive to reducing the risks of cardiovascular disease and central arterial stiffness. However, it can also cause some health hazards (such as tissue oxidative damage), especially for the elderly. It is essential to recognize and monitor different aerobic exercises for the health of exercisers. In this paper, a multi-sensor monitoring system is established for aerobic exercise recognition, and a novel recognition algorithm based on dictionary learning algorithm and sparse representation is proposed. Eight volunteers are invited to carry out ten activities, and five wireless inertial sensor nodes are used to collect the sensor data. Several experiments are implemented to verify the effectiveness of the recognition algorithm proposed in the paper. According to the experimental results, our method achieves the best performance than four other recognition algorithms including decision tree C4.5, naive Bayes, support vector machine and sparse representation. Besides, the other two aspects are also studied in the paper, one is the effect of different binding positions of sensors on classification results, and the other is the effect of selecting different features. The results of the experiments show that two sensor nodes attached to the right wrist and the left thigh achieve better result, and the feature “correlation coefficient” is not important to recognize different aerobic exercises that are investigated in our paper.

Keywords

Aerobic exercise recognition Wearable inertial sensors Sparse representation Learned dictionary Intelligent health care 

Notes

Acknowledgements

This work was supported by National Natural Science Foundation of China under Grant No.61473058, Fundamental Research Funds for the Central Universities (DUT 15ZD114).

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Copyright information

© Taiwanese Society of Biomedical Engineering 2017

Authors and Affiliations

  1. 1.School of Control Science and EngineeringDalian University of TechnologyDalianChina

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