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Research Output

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Conference contribution
2017

Effects of lateral stepping gait and dual tasking during treadmill walking in healthy young and older adults

Soangra, R. & Lockhart, T., Jan 1 2017, 54th Annual Rocky Mountain Bioengineering Symposium, RMBS 2017 and 54th International ISA Biomedical Sciences Instrumentation Symposium 2017. International Society of Automation (ISA), Vol. 2017-March.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Low and high frequency fluctuations in center of pressure signals can detect postural deficits in idiopathic Parkinson’s disease patients

Frames, C. W., Lockhart, T., Smith, V., Olson, M. & Lieberman, A., Jan 1 2017, 54th Annual Rocky Mountain Bioengineering Symposium, RMBS 2017 and 54th International ISA Biomedical Sciences Instrumentation Symposium 2017. International Society of Automation (ISA), Vol. 2017-March.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lower extremity muscle fatigue influences nonlinear variability in trunk accelerations

Soangra, R., Moon, S., Rezvanian, S. & Lockhart, T., Jan 1 2017, 54th Annual Rocky Mountain Bioengineering Symposium, RMBS 2017 and 54th International ISA Biomedical Sciences Instrumentation Symposium 2017. International Society of Automation (ISA), Vol. 2017-March.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Overground walking along with counting backwards influences movement variability in healthy young and older adults

Soangra, R. & Lockhart, T., Jan 1 2017, 54th Annual Rocky Mountain Bioengineering Symposium, RMBS 2017 and 54th International ISA Biomedical Sciences Instrumentation Symposium 2017. International Society of Automation (ISA), Vol. 2017-March.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Toward an objective method to classify tremor dominant and postural instability and gait difficulty subtypes of Parkinson’s disease: A pilot study

Rezvanian, S., Lockhart, T., Frames, C. & Soangra, R., Jan 1 2017, 54th Annual Rocky Mountain Bioengineering Symposium, RMBS 2017 and 54th International ISA Biomedical Sciences Instrumentation Symposium 2017. International Society of Automation (ISA), Vol. 2017-March.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations
2015

Comparison of slip training in vr environment and on moveable platform

Liu, J., Lockhart, T., Parijat, P., McIntosh, J. D. & Chiu, Y. P., 2015, 52nd Annual Rocky Mountain Bioengineering Symposium and 52nd International ISA Biomedical Sciences Instrumentation Symposium 2015. International Society of Automation (ISA), p. 192-200 9 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations
2014

Agreement in gait speed from smartphone and stopwatch for five meter walk in laboratory and clinical environments

Soangra, R. & Lockhart, T. E., Jan 1 2014, 51st Annual Rocky Mountain Bioengineering Symposium, RMBS 2014 and 51st International ISA Biomedical Sciences Instrumentation Symposium 2014. ISA - Instrumentation, Systems, and Automation Society, p. 254-264 11 p. (51st Annual Rocky Mountain Bioengineering Symposium, RMBS 2014 and 51st International ISA Biomedical Sciences Instrumentation Symposium 2014).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Development of automated gait assessment algorithm using three inertial sensors and its reliability

Lockhart, T. E., Soangra, R., Chung, C., Frames, C., Fino, P. & Zhang, J., Jan 1 2014, 51st Annual Rocky Mountain Bioengineering Symposium, RMBS 2014 and 51st International ISA Biomedical Sciences Instrumentation Symposium 2014. ISA - Instrumentation, Systems, and Automation Society, p. 297-306 10 p. (51st Annual Rocky Mountain Bioengineering Symposium, RMBS 2014 and 51st International ISA Biomedical Sciences Instrumentation Symposium 2014).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Fall risks assessment among community dwelling elderly using wearable wireless sensors

Lockhart, T. E., Soangra, R. & Frames, C., Jan 1 2014, Signal Processing, Sensor/Information Fusion, and Target Recognition XXIII. SPIE, 90911J. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 9091).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Potential for using smartphone accelerometers in non-laboratory environments

Soangra, R., Lockhart, T. E., Frames, C. W., Zhang, J., Moon, S. H. & Park, J., Jan 1 2014, 2014 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2014. Human Factors an Ergonomics Society Inc., p. 1672-1675 4 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2014-January).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Recurrence quantitative analysis of postural sway using force plate and smartphone

Chung, C. C., Soangra, R. & Lockhart, T., 2014, Proceedings of the Human Factors and Ergonomics Society. Human Factors an Ergonomics Society Inc., Vol. 2014-January. p. 1271-1275 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations
2013

Assessment of postural stability using inertial measurement unit on inclined surfaces in healthy adults

Frames, C., Soangra, R. & Lockhart, T. E., Sep 9 2013, 50th Annual Rocky Mountain Bioengineering Symposium and 50th International ISA Biomedical Sciences Instrumentation Symposium 2013. p. 235-243 9 p. (50th Annual Rocky Mountain Bioengineering Symposium and 50th International ISA Biomedical Sciences Instrumentation Symposium 2013; vol. 493).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Comparison of intra-individual physiological sway complexity from force plate and inertial measurement unit

Soangra, R. & Lockhart, T. E., Sep 9 2013, 50th Annual Rocky Mountain Bioengineering Symposium and 50th International ISA Biomedical Sciences Instrumentation Symposium 2013. p. 181-187 7 p. (50th Annual Rocky Mountain Bioengineering Symposium and 50th International ISA Biomedical Sciences Instrumentation Symposium 2013; vol. 493).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fall risks assessment and fall prediction among community dwelling elderly using wearable wireless sensors

Wu, X., Yeoh, H. T. & Lockhart, T., Dec 13 2013, Proceedings of the Human Factors and Ergonomics Society Annual Meeting, HFES 2013. p. 109-113 5 p. (Proceedings of the Human Factors and Ergonomics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Wavelet based automated postural event detection and activity classification with single IMU

Lockhart, T. E., Soangra, R., Zhang, J. & Wu, X., Sep 9 2013, 50th Annual Rocky Mountain Bioengineering Symposium and 50th International ISA Biomedical Sciences Instrumentation Symposium 2013. p. 225-234 10 p. (50th Annual Rocky Mountain Bioengineering Symposium and 50th International ISA Biomedical Sciences Instrumentation Symposium 2013; vol. 493).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2012

A comparative study for performance evaluation of sit-to-stand task with body worn sensor and existing laboratory methods

Soangra, R. & Lockhart, T. E., Aug 20 2012, 49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium. p. 137-144 8 p. (49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

A comparison between methods of measuring postrual stability: Force plates versus accelerometers

Seimetz, C., Tan, D., Katayama, R. & Lockhart, T., Aug 20 2012, 49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium. p. 467-473 7 p. (49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Determination of stabilogram diffusion analysis coefficients and invariant density analysis parameters to understand postural stability associated with standing on anti-fatigue mats

Soangra, R. & Lockhart, T. E., Aug 20 2012, 49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium. p. 474-481 8 p. (49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Investigating the effects of slipping on lumbar muscle activity, kinematics, and kinetics

Rashedi, E., Jia, B., Nussbaum, M. A. & Lockhart, T. E., Dec 1 2012, Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012. p. 1201-1205 5 p. (Proceedings of the Human Factors and Ergonomics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Investigation into the functional mobility difference between obese and non-obese elderly

Wu, X., Yeoh, H. T., Soangra, R. & Lockhart, T. E., Dec 1 2012, Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012. p. 1814-1816 3 p. (Proceedings of the Human Factors and Ergonomics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Non-invasive fall risk assessment in community dwelling elderly with wireless inertial measurement units

Lockhart, T. E., Yeoh, H. T., Soangra, R., Jongprasithporn, M., Zhang, J., Wu, X. & Ghosh, A., Aug 20 2012, 49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium. p. 439-446 8 p. (49th Annual Rocky Mountain Bioengineering Symposium and 49th International ISA Biomedical Sciences Instrumentation Symposium).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2011

An approach for identifying gait events using wavelet denoising technique and single wireless IMU

Soangra, R., Lockhart, T. E. & Van De Berge, N., Nov 28 2011, Proceedings of the Human Factors and Ergonomics Society 55th Annual Meeting, HFES 2011. p. 1990-1994 5 p. (Proceedings of the Human Factors and Ergonomics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Can virtual reality be used as a gait training tool for older adults?

Parijat, P. & Lockhart, T. E., Nov 28 2011, Proceedings of the Human Factors and Ergonomics Society 55th Annual Meeting, HFES 2011. p. 157-161 5 p. (Proceedings of the Human Factors and Ergonomics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations
2010

Effects of anti-fatigue flooring on gait parameters

Soangra, R., Jones, B. & Lockhart, T. E., Dec 1 2010, 54th Human Factors and Ergonomics Society Annual Meeting 2010, HFES 2010. p. 2019-2022 4 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Investigating dynamics of dark focus of the human eye in young adults

Yodpijit, N. & Lockhart, T. E., Dec 1 2010, 54th Human Factors and Ergonomics Society Annual Meeting 2010, HFES 2010. p. 1995-1999 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Occupational safety: The past, present and future

Lockhart, T. E., Dec 1 2010, 54th Human Factors and Ergonomics Society Annual Meeting 2010, HFES 2010. 1 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Portable, non-invasive fall risk assessment in end stage renal disease patients on hemodialysis

Lockhart, T. E., Barth, A. T., Zhang, X., Songra, R., Abdel-Rahman, E. & Lach, J., Dec 1 2010, Proceedings - Wireless Health 2010, WH'10. p. 84-93 10 p. (Proceedings - Wireless Health 2010, WH'10).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

The impairment and recovery of dynamic walking stability during virtual environment exposure in the elderly

Zhang, X. & Lockhart, T. E., Dec 1 2010, 54th Human Factors and Ergonomics Society Annual Meeting 2010, HFES 2010. p. 1154-1158 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2009

A reliability study of three functional mobility assessment tools in fall risk evaluation

Zhang, X. & Lockhart, T. E., Dec 1 2009, 53rd Human Factors and Ergonomics Society Annual Meeting 2009, HFES 2009. p. 1719-1723 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Investigation of biomechanical characteristics of older adults: Effects of gender and driving status

Parijat, P., Haynes, C., Lockhart, T. E. & Antin, J., Dec 1 2009, 53rd Human Factors and Ergonomics Society Annual Meeting 2009, HFES 2009. p. 1724-1728 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Trunk angular kinematics during slip-induced falls and activities of daily living - Towards developing a fall detector

Liu, J. & Lockhart, T. E., Dec 1 2009, 53rd Human Factors and Ergonomics Society Annual Meeting 2009, HFES 2009. p. 892-896 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations
2008

As go the feet ... On the estimation of attentional focus from stance

Quek, F., Ehrich, R. & Lockhart, T., Dec 1 2008, ICMI'08: Proceedings of the 10th International Conference on Multimodal Interfaces. p. 97-104 8 p. (ICMI'08: Proceedings of the 10th International Conference on Multimodal Interfaces).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Differences in gait parameters between non-disabled and intellectually disabled adults

Haynes, C. A. & Lockhart, T. E., Dec 1 2008, 52nd Human Factors and Ergonomics Society Annual Meeting, HFES 2008. p. 1800-1804 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Knee joint kinetics during reactive recovery: Effects of localized muscle fatigue

Parijat, P., Lockhart, T. E. & Liu, J., Dec 1 2008, 52nd Human Factors and Ergonomics Society Annual Meeting, HFES 2008. p. 1078-1082 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2007

Effect of load carrying on local dynamic stability

Liu, J., Lockhart, T. E. & Granata, K., Dec 1 2007, 51st Annual Meeting of the Human Factors and Ergonomics Society, HFES 2007. p. 909-913 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Effects of stress, coping style, and confidence on basic combat training attrition

Davis, T. W. & Lockhart, T. E., Dec 1 2007, 51st Annual Meeting of the Human Factors and Ergonomics Society, HFES 2007. p. 855-859 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Influence of localized muscle fatigue of the knee joint on gait parameters related to slip propensity

Parijat, P. & Lockhart, T. E., Dec 1 2007, 51st Annual Meeting of the Human Factors and Ergonomics Society, HFES 2007. p. 894-898 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Investigating the dynamic accommodative characteristics of the aging eye with the control of the intensity and chromaticity of light

Shi, W. & Lockhart, T. E., Dec 1 2007, 51st Annual Meeting of the Human Factors and Ergonomics Society, HFES 2007. p. 35-39 5 p. (Proceedings of the Human Factors and Ergonomics Society; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations
2006

Aging effect on initial postural responses of unperturbed foot to unexpected slips

Liu, J. & Lockhart, T. E., Dec 1 2006, Proceedings of the Human Factors and Ergonomics Society 50th Annual Meeting, HFES 2006. p. 1341-1345 5 p. (Proceedings of the Human Factors and Ergonomics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Gait asymmetry: Factors influencing slip severity and tendency among older adults

Kim, S. & Lockhart, T., Dec 1 2006, Proceedings of the Human Factors and Ergonomics Society 50th Annual Meeting, HFES 2006. p. 1332-1335 4 p. (Proceedings of the Human Factors and Ergonomics Society).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations
2005

An e-textile system for motion analysis

Edmison, J., Jones, M., Lockhart, T. & Martin, T., 2005, Studies in Health Technology and Informatics. Vol. 108. p. 292-301 10 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Human factors aspects in set-up time reduction

van Goubergen, D. & Lockhart, T. E., Jan 1 2005, Integrating Human Aspects in Production Management - IFIP TC5/WG5.7 Proceedings of the International Conference on Human Aspects in Production Management. Springer New York LLC, p. 127-135 9 p. (IFIP Advances in Information and Communication Technology; vol. 160).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations
2004

Anthropometry of Thai technical university students

Yodpijit, N., Bunterngchit, Y. & Lockhart, T., 2004, IIE Annual Conference and Exhibition 2004. p. 899-904 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Effects of planar and nonplanar driver-side mirrors on subjective discomfort-glare responses among young and old.

Lockhart, T. & Atsumi, B., 2004, SAE Technical Papers.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2002

Assessment of slip severity among different age groups

Lockhart, T., Woldstad, J. C. & Smith, J. L., 2002, ASTM Special Technical Publication. 1424 ed. American Society for Testing and Materials, p. 17-32 16 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations
2000

Effects of musculoskeletal and sensory degradation due to aging on the biomechanics of slips and falls

Lockhart, T., Smith, J. L., Woldstad, J. C. & Li, P., 2000, Proceedings of the XIVth Triennial Congress of the International Ergonomics Association and 44th Annual Meeting of the Human Factors and Ergonomics Association, 'Ergonomics for the New Millennium'. p. 83-86 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Prediction of falls using a robust definition of slip distance and adjusted required coefficient of friction

Lockhart, T., Woldstad, J. C., Smith, J. L., Simon, Hsiang, M. & Li, P., 2000, Proceedings of the XIVth Triennial Congress of the International Ergonomics Association and 44th Annual Meeting of the Human Factors and Ergonomics Association, 'Ergonomics for the New Millennium'. p. 506-509 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations
1997

Ability of elderly people to traverse slippery walking surfaces

Lockhart, T., 1997, Proceedings of the Human Factors and Ergonomics Society. Anon (ed.). Human Factors and Ergonomics Society, Inc., Vol. 1. p. 125-129 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Scopus citations