IMPLEMENTATION AND EVALUATION OF A PHYSICAL ACTIVITY AND ENERGY EXPENDITURE ALGORITHM IN A SENSIUM™-BASED BODY-WORN DEVICE

M. Hernandez Silveira, S.-S. Ang, T. Mehta, B. Wang, A. Burdett

2012

Abstract

It is well known that sedentary life style lead to conditions such as obesity and diabetes. In recent years, there has been increasing interest in devices capable of measuring activity energy expenditure (AEE) and physical activity intensity (PAI) without disrupting the activities of daily living. In this paper we introduce a portable and light-weight device based on our SensiumTM technology. Unlike existing commercially available devices, the latter can measure both AEE and PAI in a real-time basis and convey the resultant calculations wirelessly to a remote PC and/or sever. Such calculations are carried out by means of a mathematical model, which combines heart rate and accelerometer information to produce PAI and AEE estimations. The model was calibrated against a reference indirect calorimetry system. In particular, simulated annealing was used to adjust the model parameters so as to allow a closer match between the predicted and reference values. The resulting model was tested using a separate dataset with reference to indirect calorimetry. The 95% prediction interval and the Spearman’s correlation coefficient (r) for PAI were found to be [-0.1307, 0.171] kJ/kg/min and 0.903 (p<0.001) respectively. In addition, the results revealed that there is agreement between SensiumTM and a similar reference (validated) device.

References

  1. Andre, D. & Wolf, D. (2007) Recent Advances in FreeLiving Physical Activity Monitoring: A Review. Journal of Diabetes Science and Technology, 1, 760-767.
  2. Antonsson, E. & Mann, R. (1985) The frequency content of gait. Journal of Biomechanics, 18, 39-47.
  3. Bertsimas, D. & Tsitsiklis, J. (1993) Simulated Annealing. Statistics, 8, 10-15.
  4. Brage, S., Brage, N., Franks, P. W., Ekelund, U. & Wareham, N. J. (2005) Reliability and validity of the combined heart rate and movement sensor Actiheart. European Journal of Clinical Nutrition, 59, 561-570.
  5. Brage, S., Brage, N., Franks, P. W., Ekelund, U., Wong, M.-Y., Andersen, L. B., Froberg, K. & Wareham, N. J. (2004) Branched equation model of simultaneous accelerometry and heart rate monitoring improves estimate of directly measured physical activity energy expenditure. . Journal of Applied Physiology, 96, 343- 351.
  6. CamNTech (2009) The Actiheart Guide to Getting Started.
  7. Crouter, S., Churilla, J. & Bassett, D. (2007) Accuracy of the Actiheart for the assessment of energy expenditure in adults. European Journal of Clinical Nutrition, 1-8.
  8. Hamilton, P. & Tompkins, W. (1986) Quantitative investigation of QRS detection rules using the MIT/BIH arrhythmia database. IEEE transactions on biomedical engineering, 33, 1157-1165.
  9. Marchand, L. L., Wilkens, L. R., Kolonel, L. N., Hankin, J. H. & Lyu, L.-C. (1997) Associations of Sedentary Lifestyle, Obesity, Smoking, Alcohol Use, and Diabetes with the Risk of Colorectal Cancer. Cancer Research, 57, 4787-4794.
  10. Pan, J. & Tompkins, W. (1985) A real-time QRS detection algorithm. IEEE transactions on biomedical engineering, 32, 230-236.
  11. Weir, J. (1949) New methods for calculating metabolic rate with special reference to protein metabolism. . Journal of Physiology, 109, 1-9.
Download


Paper Citation


in Harvard Style

Silveira M., Ang S., Mehta T., Wang B. and Burdett A. (2012). IMPLEMENTATION AND EVALUATION OF A PHYSICAL ACTIVITY AND ENERGY EXPENDITURE ALGORITHM IN A SENSIUM™-BASED BODY-WORN DEVICE . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012) ISBN 978-989-8425-91-1, pages 219-223. DOI: 10.5220/0003786902190223


in Bibtex Style

@conference{biodevices12,
author={M. Hernandez Silveira and S.-S. Ang and T. Mehta and B. Wang and A. Burdett},
title={IMPLEMENTATION AND EVALUATION OF A PHYSICAL ACTIVITY AND ENERGY EXPENDITURE ALGORITHM IN A SENSIUM™-BASED BODY-WORN DEVICE},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)},
year={2012},
pages={219-223},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003786902190223},
isbn={978-989-8425-91-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)
TI - IMPLEMENTATION AND EVALUATION OF A PHYSICAL ACTIVITY AND ENERGY EXPENDITURE ALGORITHM IN A SENSIUM™-BASED BODY-WORN DEVICE
SN - 978-989-8425-91-1
AU - Silveira M.
AU - Ang S.
AU - Mehta T.
AU - Wang B.
AU - Burdett A.
PY - 2012
SP - 219
EP - 223
DO - 10.5220/0003786902190223