Use of a Wireless Network of Accelerometers for Improved Measurement of Human Energy Expenditure

Electronics

Alexander H. Montoye¹  Bo Dong²  Subir Biswas² 

[1] Department of Kinesiology, 308 W. Circle Dr., Michigan State University, East Lansing, MI 48824, USA; E-Mail:;Department of Electrical and Computer Engineering, 428 S. Shaw Ln., Michigan State University, East Lansing, MI 48824, USA; E-Mails:

关键词: artificial neural network;    machine learning;    ActiGraph;    multi-sensor network;    activity measurement;    physical activity;   

DOI  :  10.3390/electronics3020205

来源: mdpi

【 摘 要 】

Single, hip-mounted accelerometers can provide accurate measurements of energy expenditure (EE) in some settings, but are unable to accurately estimate the energy cost of many non-ambulatory activities. A multi-sensor network may be able to overcome the limitations of a single accelerometer. Thus, the purpose of our study was to compare the abilities of a wireless network of accelerometers and a hip-mounted accelerometer for the prediction of EE. Thirty adult participants engaged in 14 different sedentary, ambulatory, lifestyle and exercise activities for five minutes each while wearing a portable metabolic analyzer, a hip-mounted accelerometer (AG) and a wireless network of three accelerometers (WN) worn on the right wrist, thigh and ankle. Artificial neural networks (ANNs) were created separately for the AG and WN for the EE prediction. Pearson correlations (r) and the root mean square error (RMSE) were calculated to compare criterion-measured EE to predicted EE from the ANNs. Overall, correlations were higher (r = 0.95 vs. r = 0.88, p < 0.0001) and RMSE was lower (1.34 vs. 1.97 metabolic equivalents (METs), p < 0.0001) for the WN than the AG. In conclusion, the WN outperformed the AG for measuring EE, providing evidence that the WN can provide highly accurate estimates of EE in adults participating in a wide range of activities.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.