Locomotion Research Labratory

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Locomotion Research Labratory

Conference Papers

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2021

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2020

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2019

  • Kim, H.N., and Lockhart, T.E., (2019).  The effects of transitioning between different floor coverings on gait characteristics of older adults.  Proceedings of the Human Factors and Ergonomics Society Annual Meeting, Volume 63 (1), 1237-1238.  Sage Publications.

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2018

  • Roman, G., Vidt, M.E., Peterson, D., and Lockhart, T. Composite injury risk measure for sign language users. International Society of Biomechanics, International Shoulder Group (podium). Rochester, MN; August 2018.
  • Victoria A. Smith, Christopher W. Frames, Jakub Godzik, MD, Jay D. Turner, and Thurmon Lockhart. “Evaluating the Severity of Adult Spinal Deformity using Timed-Up and Go.” American Society of Biomechanics Annual Meeting, Rochester, MN, USA, August 2018, podium.
  • Cone, B.L., Lockhart, T.E., Raisbeck, L.D., Ross, S.E., & Rhea, C.K. An investigation into the relationship between locomotor dynamics and overall fall-risk. North American Society for the Psychology of Sport and Physical Activity, Denver, CO, June 2018, national conference, podium. [Abstract published in Journal of Sport and Exercise Psychology Supplement, 40, S47]
  • Saba Rezvanian, Seong Moon, Rahul Soangra, Thurmon Lockhart. Effects of treadmill delivered translational perturbations training on walking dynamic stability, Biomedical Engineering Society 2018 (BMES), Atlanta, Georgia.
  • Seong Hyun Moon, Rahul Soangra, Chris Frames, Saba Rezvanian, Thurmon Lockhart. Effects of Stitching Location On Dynamic Stability, Biomedical Engineering Society 2018 (BMES), Atlanta, Georgia. 
  • Itai Kreiser, Thurmon Lockhart, Saba Rezvanian, Chris Frames. Analyzing gait velocity to assess variability in dynamic stability for fall risk assessment, Biomedical Engineering Society 2018 (BMES), Atlanta, Georgia.
  • Seong H. Moon, Timothy E.Hewett, Hyunglae Lee, Rahul Soangra, Chris Frames, Thurmon E.Lockhart. “Effects of Dynamic Stability of Fallers and Non-Fallers Utilizing Long-term(3-days) Wearable Sensor Data.” 2018 American Society of Biomechanics Annual Meeting (ASB 2018)
  • Victoria A. Smith, Christopher W. Frames, Markey C. Olson, Thurmon E. Lockhart, Abraham Lieberman. “No Postural Stability differences between Asymptomatic and Symptomatic Neurological Orthostatic Hypotension in Parkinson’s disease – A Pilot Study.” American Academy of Neurology Annual Meeting, Los Angelos, CA, April 2018, poster.

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2017

  • Cone, B.L., Kuznetsov, N.A., Lockhart, T.E., & Rhea, C.K. Local stability of center of mass improves from a 10-minute trip-training session. North American Society for the Psychology of Sport and Physical Activity, San Diego, CA, June 2017.
  • Currier, K., Daley, M., Mason, C., Ramos, T, Roman, G., and Lockhart, T. The Impact of Asymmetrical Loading Throughout Gait. Biomedical Engineering Society 2017 Annual Meeting (poster). Phoenix, AZ; October 2017.
  • Soangra R S, Lockhart TE. Self-paced walking on treadmill induces higher gait adaptive capacity in healthy individuals than that when walking at constant speed. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-Fri-635.
  • Moon S, Lockhart TE. Effects of Slope Walking on Dynamic Stability. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-Fri-71.
  • Moon S, Lockhart TE. Effects of Military Rucksacks on Dynamic Stability. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-Fri-636.
  • Bridges R, Lockhart TE. Barometric Smart Shoe Comparison to Vicon System. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-SAT-154.
  • Bridges R, Lockhart TE. Community Dwelling Measurement of Vitamin D, CHAMPS Questionnaire, and Time Up & Go. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-SAT-155.
  • Xue K, Lockhart TE. Nonlinear Evaluation of Gait in Older Fallers and Non-Fallers. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-SAT-136.
  • Mara D, Lockhart TE. Balance Recovery and Gait Adaptations in response to Mediolateral Perturbations. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-SAT-513.
  • Dimodisa J, Lockhart TE. Swing phase of the gait cycle between fallers and non fallers. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-SAT-134.
  • Olson M, Lockhart TE. The Effect of Dyskinesia on Postural Stability – a Pilot Study. Proceedings of Biomedical Engineering Society (BMES 2017). 2017; P-FRI- 648.

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2016

  • Deep A, Lieberman A, Dhall R, Lockhart T, Frames C, Shafer S, Krishnamurthi N. Comparison of effect of variable deep brain stimulation (DBS) frequencies on gait and balance in Parkinson’s disease (PD) patients with either bilateral GPi or STN stimulators employing wearable wireless sensors. Movement Disorders. 2016 Jun; 31:S23-4.
  • Deep A, Lieberman A, Dhall R, Lockhart T. Shafer S, Frames C, Syed S. Measurement of effect of variable deep brain stimulation (DBS) frequencies on static postural control in Parkinson’s disease (PD) patients with bilateral STN or GPi stimulators by employing force plate. Movement Disorders. 2016 Jun; 31:S20-1.
  • Lieberman A, Deep A, Lockhart T. Falls in Parkinson’s disease: beware the short, slow steps. Movement Disorders. 2016 Jun; 31:S283.
  • Lieberman A, Deep A, Lockhart T, Frames C, Shafer S, McCauley M. Why do patients with Parkinson disease fall? A single center experience. Neurology. 2016 Apr 5; 86:(16) Supplement P4.330.

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2015

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2014

  • Lockhart TE, Frames C, Soangra R, Lach J. Postural stability regularity measures with wireless sensors can identify fall risk in obese elderly. Wireless Health 2014, Bethesda, MD. 2014.
  • Soangra R, Lockhart TE. Understanding relationship between center of pressure signals from forceplates and accelerometers. Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 2014.
  • Chung C, Soangra R, Lockhart TE. Recurrent quantitative analysis of postural sway using forceplate and smartphone. Proceedings of the Human Factors and Ergonomics Society Annual meeting. 2014.

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2013

  • Chang W, LeClercq S, Haslam R, Lockhart T. The state of the science on occupational slips, trips and falls on the same level. The Proceedings of the International Conference on Fall Prevention and Protection. National Institute of Occupational Safety and Health, Japan (JNIOSH), Tokyo. 2013. pp. 33-40.
  • Wu X, Yeoh H, Lockhart TE. 10-Meter walking test among obese and non-obese community dwelling elderly. The XXVth Annual Occupational Ergonomics and Safety Conference, Atlanta, GA, June 6-7, 2013.
  • Wu X, Lockhart TE. Fall risk assessment for the community dwelling obese elderly using wearable sensory. 37th Annual Meeting of the American Society of Biomechanics, Omaha, NE, September 4-7, 2013.
  • Soangra R, Lockhart TE, Zhang J. Effects of electromyogram signal filtering on muscle activation time. 37th Annual Meeting of the American Society of Biomechanics, Omaha, NE. September 4-7, 2013.
  • Zhang J, Lockhart TE, Soangra R. Ankle fatigue classification using support vector machines. 37th Annual Meeting of the American Society of Biomechanics, Omaha, NE, September 4-7, 2013.
  • Wu X, Lockhart TE. Fall risk assessment and fall prediction among community dwelling elderly using wearable wireless sensors. 2013 International Annual Meeting of the Human Factors and Ergonomics Society, San Diego, CA, September 30-October 4, 2013.
  • Ehsan R, Bochen J, Nussbaum M, Lockhart T. Investigating the effects of slipping on lumbar muscle activity, kinematics, and kinetics. 2013 International Annual Meeting of the Human Factors and Ergonomics Society, San Diego, CA, September 30-October 4, 2013.

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2012

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2011

  • Liu J, Kim S, Lockhart TE. Classification of daily activities for the elderly using wearable sensors. Human Computer Interaction International, Orlando, FL. 2011.
  • Soangra R, Lockhart TE. An approach for identifying posture-locomotion-manual events using wavelet denoising technique and three wireless IMU. Proceedings of Biomedical Engineering Society (BMES 2011). 2011; PS-Fri-A-94.
  • Lockhart TE, Yeoh HT, Soangra R, Haynes C, Brolinson PG. Effects of orthotics on dynamic stability in the elderly. Proceedings of Biomedical Engineering Society (BMES 2011). 2011; PS-Fri-A-187.
  • Soangra R, Lockhart TE, Van de Berge N. An Approach for identifying gait events using wavelet denoising technique and single wireless IMU. Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 2011; 55:1190-4.
  • Jongprasithporn M, Lockhart TE, Yodpijit N. The age-related effect on slip severity and response time during slip perturbations. Proceedings of the XXIII Annual International Occupational Ergonomics and Safety Conference, Baltimore, MD, USA, June 9-10, 2011.

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2010

  • Lockhart TE. Kinetic learning in occupational fall prevention training. The proceedings of the 2010 International Conference on Fall Prevention and Protection, Morgantown, WV. 2010.
  • Zhang X, Lockhart TE. The impairment and recovery of dynamic walking stability during virtual environment exposure in the elderly. Human Factors and Ergonomics Society 54th Annual Meeting, San Francisco, CA. 2010.
  • Zhang X, Lockhart TE. Locomotion stability adaptation to the virtual reality induced sensory conflicts. The 16th US National Congress of Theoretical and Applied Mechanics, State College, PA. 2010.
  • Yodpijit N, Lockhart TE. Stability of dark focus of the human eye. The XXIInd Annual International Occupational Ergonomics and Safety Conference, Tempe, AZ. June 10-11, 2010.
  • Yodpijit N, Lockhart TE. Investigating dynamics of dark focus on the human eye. The 54th Annual Meeting of the Human Factors and Ergonomics Society, San Francisco, CA. September 27-October 1, 2010.

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2009

  • Zhang X, Lockhart TE. A reliability study of three functional mobility assessment tools in fall risk evaluation. Proceedings of the Human Factors and Ergonomics Society 53rd Annual Meeting, San Antonio, TX. 2009; 1719-23.
  • Liu J, Lockhart TE. Trunk angular kinematics during slip-induced falls and activities of daily living – towards developing a fall detector. Proceedings of the Human Factors and Ergonomics Society 53rd Annual Meeting, San Antonio, TX. 2009; 892-6.
  • Parijat P, Haynes CA, Lockhart TE, Antin J. Investigation of biomechanical characteristics of older adults: effects of gender and driving status. Proceedings of the Human Factors and Ergonomics Society 53rd Annual Meeting, San Antonio, TX. 2009; 1724-7.
  • Haynes CA, Lockhart TE. Differences in gait parameters between non-disabled and intellectually disabled adults. Proceedings of the Human Factors and Ergonomics Society 53rd Annual Meeting, San Antonio, TX. 2009; 1719-23.
  • Zhang X, Lockhart TE, Parijat P. Fall risk assessment based on postural-locomotor-manual test utilizing miniature accelerometers. Proceedings of the International Ergonomics Association 17th World Congress on Ergonomics, Beijing, China. 2009.
  • Yodpijit N, Jongprasithporn M, Lockhart TE. Revised horizontal working area for southern Thai population. Proceedings of the XXIst Annual International Occupational Ergonomics and Safety Conference, Dallas, TX. 2009 Jun 11-12; p.142-4.
  • Jongprasithporn M, Yodpijit N, Lockhart TE. Slips, trips, and falls training for deliver workers. Proceedings of the XXIst Annual International Occupational Ergonomics and Safety Conference, Dallas, TX. 2009 Jun 11-12; p.163-6.
  • Zhang X, Lockhart TE, Liu J. The use of inertial measurement units in assessing standing and walking stability for fall risk estimation. Proceedings of the XXIst Annual International Occupational Ergonomics and Safety Conference, Dallas, TX. 2009 Jun 11-12; p.150-6.
  • Liu J, Lockhart TE. A novel integrative measurement framework – application in fall event detection. Proceedings of the XXIst Annual International Occupational Ergonomics and Safety Conference, Dallas, TX. 2009 Jun 11-12; p.157-62.

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2008

  • Haynes CA, Lockhart TE. Differences in gait parameters between non-disabled and intellectually disabled adults. Proceedings of the Human Factors and Ergonomics Society 52nd Annual Meeting, New York, NY. 2008; 1068-72.
  • Parijat P, Lockhart TE, Liu J. Knee joint kinetics during reactive recovery: effects of localized muscle fatigue. Proceedings of the Human Factors and Ergonomics Society 52nd Annual Meeting, New York, NY. 2008; 1078-82.
  • Lee M, Roan M, Lockhart TE. Lean and overweight differences in lower body kinematics while evenly distributed load carrying. GCMAS, Richmond, VA. April 2-4, 2008.
  • Shi W, Lockhart TE. Age-related dynamic accommodative performance and driving safety. Proceedings of the XX Annual ISOES Conference, Chicago, IL, 2008 Jun 12-13; 204-9.
  • Haynes CA, Lockhart TE, Liu J. Effects of weight and balance training on gait parameters among individuals with mental retardation. Proceedings of the XX Annual ISOES Conference, Chicago, IL, 2008 Jun 12-13; 69-74.
  • Kim S, Lockhart TE. Effects of 8-week exercise training on the likelihood of slips and falls. Proceedings of the XX Annual ISOES Conference, Chicago, IL, 2008 Jun 12-13; 80-3.
  • Liu J, Lockhart TE, Zhang X, Saxena S, Parijat P. Spatio-temporal gait parameters estimation from inertial measurement on the wrist. Proceedings of the XX Annual ISOES Conference, Chicago, IL, 2008 Jun 12-13; 69-74.
  • Lockhart TE. Influence of localized muscle fatigue of the knee joint on kinematics and kinetics related to fall accidents. National Occupational Injury Research Symposium, Pittsburgh, PA, October 21, 2008.

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2007

  • Parijat P, Lockhart T. Effects of quadriceps fatigue on knee joint kinetics during slip induced falls. Journal of Biomechanics. 2007; 40(Suppl 2) S112.
  • Parijat P, Lockhart TE. Effects of localized muscle fatigue of the knee joint on reactive recovery mechanisms. Proceedings of the Slips, Trips and Falls, Boston, MA. August 22-24, 2007.
  • Haynes CA, Lockhart TE. Static postural stability of individuals with mental retardation before and after weight and balance training. 31st Annual Meeting of the American Society of Biomechanics, Stanford, CA. August 22-25, 2007.
  • Lockhart TE, Liu J. Local dynamic stability assessment utilizing inertial sensors to differentiate fall prone elderly. IEA, International Conference on Slips, Trips and Falls 2007: From Research to Practice, Hopkinton, MA. August 23-24, 2007.
  • Lee M, Roan M, Lockhart TE. Principal component analysis for gait temporal waveform data between loaded and unloaded walking. Biomedical Engineering Society Conference, Los Angeles, CA September 26-29, 2007.
  • Liu J, Lockhart TE, Granata K. Effect of load carrying on local dynamic stability. Human Factors and Ergonomics Society 51st Annual Meeting, Baltimore, MD. October 1-5, 2007.
  • Shi W, Lockhart TE, Investigating the dynamic accommodative characteristics of the aging eye with the control of the intensity and chromaticity of light. Proceedings of HFES 2007 Conference, Baltimore, MD. October 2007.
  • Davis T, Lockhart TE. Effects of stress, coping style and confidence on basic combat training attrition. Proceedings of HFES 2007 Conference, Baltimore, MD. October 2007.
  • Parijat P, Lockhart TE. Influence of localized muscle fatigue of knee joint on gait parameters related to slip propensity. Proceedings of the 51st Annual Human Factors and Ergonomics Meeting, Baltimore, MD. October 1-5, 2007.
  • Shi W, Lockhart TE, Atsumi B. Dynamic accommodative performance on dashboard reading for aging drivers in the U.S. Proceedings of JSAW 2007 Congress, Kyoto, Japan. October 2007

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2006

  • Liu J, Lockhart TE. Age-related upper limb response strategies to unexpected slips. 16th World Congress of the IEA, Maastricht, The Netherlands. 2006.
  • Lockhart TE, Liu J. Effects of aging on lower extremity join torque and muscle activation patterns during slip-induced falls. Journal of Biomechanics. 2006; 39(S1):87.
  • Granata KP, Lockhart TE. Group differences among fall-prone individuals and health old and younger counterparts utilizing nonlinear stability measures. Journal of Biomechanics. 2006; 39(S1):89.
  • Parijat P, Lockhart TE, Liu J, Haynes C. Analysis of gait characteristics in mentally handicapped individuals. Proceedings of the American Society of Biomechanics Annual Meeting, Blacksburg, VA. September 2006.
  • Kim S. Lockhart TE. Gait asymmetry: factors influencing slip severity and tendency among older adults. Proceedings of the Human Factors and Ergonomics Society 49th Annual Meeting, Industrial Ergonomics, Slips and Falls, San Francisco, CA. October 16-20, 2006.
  • Liu J, Lockhart TE. Aging effect on initial postural responses of unperturbed foot to unexpected slips. Proceedings of the Human Factors and Ergonomics Society 49th Annual Meeting, Industrial Ergonomics, Slips and Falls, New Orleans, LA. October 16-20, 2006.

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2005

  • Ghosh A, Lockhart TE. Effects of multi-modal warning systems on perceived urgency of elderly drivers. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Warnings, Las Vegas, NV. 2005 Jun; 371-5.
  • Davis T, Lockhart TE. The effects of age on stress and the biomechanics of slips and falls. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Slips and Falls 3, Las Vegas, NV. 2005 Jun; 574-6.
  • Ira J, Lockhart TE, Po K. The influence of functioning level, age group and gait characteristics on the falling frequency of mentally retarded individuals. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Slips and Falls 4, Las Vegas, NV. 2005 Jun; 556-62.
  • Kim S, Lockhart TE. Prediction of fallers and non-fallers. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Slips and Falls 4, Las Vegas, NV. 2005 Jun; 550-4.
  • Liu J, Lockhart TE, Granata KP. Reaction moment at the L5/S1 joint during unexpected step perturbation while load carrying. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Manual Material Handling, Las Vegas, NV. 2005 Jun; 123-7.
  • Liu J, Lockhart TE. Aging effect on joint moment response time during successful reactive-recovery from unexpected slips. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Slips and Falls 3, Las Vegas, NV. 2005 Jun; 563-7.
  • Lockhart TE, Atsumi B, Raj P, Ghosh A. Assessment of age related effects on daytime and nighttime visual acuity. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Human Factors 2, Las Vegas, NV. 2005 Jun; 571-81.
  • Parijat P, Lockhart TE, Granata KP, Liu J, Park K. Effects of load carrying on trunk dynamics during unexpected slip and recovery. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Slips and Falls 4, Las Vegas, NV. 2005 Jun; 568-71.
  • Park SH, Lockhart TE, Yoon H-Y. Effects of sound on postural stability during standing. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Slips and Falls 3, Las Vegas, NV. 2005 Jun; 467-71.
  • Shi W, Lockhart TE. Effects of spectal wavelength on visual performance of the elderly drivers. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Slips and Falls 3, Las Vegas, NV. 2005 Jun; 583-7.
  • Yoon HY, Lockhart TE, Park SH. The comparison study of nonfatal occupational injuries of fall and slip between United States and Korea. Proceedings of the XIX Annual International Occupational Ergonomics and Safety Conference, Ergonomics in Korea, Las Vegas, NV. 2005 Jun; 63-9.

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2004

  • Lockhart TE. The effects of age and stress associated with fear of falling on gait adjustments. In McCabe PT (ed). Contemporary Ergonomics. CRC Press: Boca Raton, FL. 2004; 98-102.
  • Lockhart TE, Atsumi B. Effects of planar and nonplanar driver-side mirrors on subjective discomfort-glare responses among young and old. Society of Automotive Engineer (SAE) 2004 World Congress, Human Factors in Driver Vision and Lighting, Detroit, MI. 2004 Mar; SP:1879.
  • Liu J, Lockhart TE. Role of ankle joint in successful reactive-recovery: A 3D joint moment analysis. Proceedings of the Human Factors and Ergonomics Society 48th Annual Meeting, New Orleans, LA. September 20-24, 2004.
  • Mekaroonreung H, Lockhart TE. Trait-based individual differences on discomfort glare rating responses. Proceedings of the Human Factors and Ergonomics Society 48th Annual Meeting, New Orleans, LA. September 20-24, 2004.
  • Yoon HY, Park MY, Kim SW, Lockhart TE. Effects of the whole-body COM velocity on RCOF. Proceedings of the Human Factors and Ergonomics Society 48th Annual Meeting, New Orleans, LA. September 20-24, 2004.
  • Martin T, Lockhart TE, Jones M, Edmison J. Electronic textile for in situe biomechanical measurements. 24th Army Science Conference, Orlando, FL. November 29, 2004.

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2003

  • Liu J, Lockhart TE. Differences in localization and dynamic simulation methods in joing moments determination during normal walking. Proceedings of the 15th Triennial Congress of the International Ergonomics Association, Slip, Trips and Falls (Biomechanics), Seoul, Korea. August 24-29, 2003; Vol V.
  • Spaulding JM, Lockhart TE, VanGoubergen D, Park MY. Effects of age on adjustment of gait parameters and muscle activity. Proceedings of the 15th Triennial Congress of the International Ergonomics Association, Slip, Trips and Falls (Human Centered Approaches), Seoul, Korea. August 24-29, 2003; Vol V.
  • Kim S, Lockhart TE. Age-related changes in hamstring activation rate and its effects on initiation of slip while walking over a slippery floor surface. Proceedings of the 15th Triennial Congress of the International Ergonomics Association, Slip, Trips and Falls (Biomechanics), Seoul, Korea. August 24-29, 2003; Vol V.
  • Fraser B, VanGoubergen D, Lockhart TE. Introduction of human factors principles in the design for fast changeover. Proceedings of the 15th Triennial Congress of the International Ergonomics Association, Ergonomics in Manufacturing III, Seoul, Korea. August 24-29, 2003; Vol I.
  • VanGoubergen D, Lockhart TE. Human factors aspects in set-up time reduction. Proceedings of the IFIP WG 5.7 Working Conference on Human Aspects in Production Management, Karlsruhe, Germany. 2003 Oct 5; 5:75-81.
  • Davis T, Lockhart TE. The effects of age on stress and the biomechanics of slips and falls. Proceedings of the human factors and ergonomics Society 47th Annual Meeting, Industrial Ergonomics, Stability and Gait, Denver, CO. October 13-17, 2003;  1131-5.
  • Spaulding JM, Lockhart TE. The effects of age on gait parameters during adjustment. Proceedings of the human factors and ergonomics Society 47th Annual Meeting, Industrial Ergonomics, Stability and Gait, Denver, CO. October 13-17, 2003;  1136-40.

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2002

  • Lockhart TE. Relationship between heel acceleration and friction utilization during slipping among young and older adults. Gait and Posture. 2002; 16(S1):26-7.
  • Lockhart TE. Relationship between postural control and slip response among different age groups. Gait and Posture. 2002; 16(S1):25-6.
  • Lockhart TE. Relationship between heel acceleration and friction utilization during slipping among young and older adults. Gait and Clinical Movement Analysis Society/Biomechanical Modeling and Analysis, Chattanooga, TN. 2002 Apr 19; 60-2.
  • Lockhart TE. Relationship between postural control and slip response among different age groups. Gait and Clinical Movement Analysis Society/Biomechanical Modeling and Analysis, Chattanooga, TN. 2002 Apr 19; 62-4.
  • Kim S, Lockhart TE. Effects of age-related changes in hamstring activation rate and heel contact velocity on the biomechanics of slips and falls. The Proceedings of the XVI Annual International Society of Occupational Ergonomics and Safety (ISOES), Slips, STF-Session 5-2, Toronto, Canada. 2002 Jun 9; 1-5.
  • Davis T, Lockhart TE. Relationship between age and anxiety on the biomechanics of slips and falls. The Proceedings of the XVI Annual International Society of Occupational Ergonomics and Safety (ISOES), Session 5-3, Toronto, Canada. 2002 Jun 9; 1-5.
  • Spaulding JM, Lockhart TE. The effects of age and fear of falling on muscle activity patterns of the lower extremities during normal and adjusted human gait. The Proceedings of the XVI Annual International Society of Occupational Ergonomics and Safety (ISOES), Slips, STF-STF Session 5-1, Toronto, Canada. 2002 Jun 9; 1-6.
  • Khuvasanont T, Lockhart TE. Age-related ankle strength and the effects on the slip-induced falls. The Proceedings of the XVI Annual International Society of Occupational Ergonomics and Safety (ISOES), Slips, Session 5-4, Toronto, Canada. 2002 Jun 9; 1-5.
  • Lockhart TE. Relationship between transitional acceleration of the whole body center-of-mass and friction demand characteristic during gait. Human Factors and Ergonomic Society (HFES) 47th Annual Meeting, Baltimore, MD. 2002 Sep 23; 100-6.

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2001

  • Lockhart TE, Woldstad JC, Smith JL, Ramsey JD. Does age-related sensory degradation affect outcome of slips and falls? In: Bittner Jr A, Champney P, Morrissey S (Eds). Advances in Occupational Ergonomics and Safety. 2001; 9:323-30.
  • Lockhart TE. Gait and postural changes associated with aging and its effect on initial friction demand and outcome of slips and falls. Symposium on the Metrology of Pedestrian Locomotion and Slip Resistance, ASTM Headquarters, West Conshohocken, PA. 2001 Jun; 1-4.
  • Lockhart TE. Can gait changes associated with aging affect initiation of slip induced falls? International Conference on Computer-Aided Ergonomics and Safety (CAES), Maui, HI. 2001 Jul; 1-6.

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2000

  • Sizer PS, Starch DW, Slauterbeck JR, James CR, Lockhart TE. Kinematic and ground reaction force comparison of male and female athletes performing a rapid cut. Medicine and Science in Sports and Exercise. 2000; 32(5) Supplement: Abstract 623.
  • Lockhart TE, Smith JL, Woldstad JC, Lee PS. Effects of musculoskeletal and sensory degradation due to aging on the biomechanics of slips and falls. Proceedings of the IEA/HFES Conference. 2000; 83-6.
  • Lockhart TE, Smith JL, Woldstad JC, Hsiang M. Prediction of falls using a robust definition of slip distance and adjusted required coefficient of friction. Proceedings of the IEA/HFES. 2000; 506-9.

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1999

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1998

  • Woldstad JC, Lockhart TE, Smith JL. Towards a re-definition of hell strike and slip distance. In: Kumar S (ed). Advances in Occupational Ergonomics and Safety.1998; 2:100-3.

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1997

  • Lockhart TE, Woldstad JC. Slips and falls in the elderly. Proceedings of the 6th Annual Institute of Industrial Engineering Research Conference. 1997; 179-85.
  • Lockhart TE, Woldstad JC. Biomechanics of slips and falls in the elderly. Proceedings of the International Ergonomics Association 13th Triennial Congress, Tampere, Finland.1997 Jun; 112-5.
  • Lockhart TE. The ability of elderly people to traverse slippery walking surfaces. Proceedings of the Human Factors and Ergonomics Society 41st Annual Meeting. 1997 Sep; 125-9.

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