Research Institute

Selected Articles / Book Chapters

• Bashford GR, Tomsen N, Arya S, Burnfield JM, Kulig K (2008). Tendinopathy discrimination by use of spatial frequency parameters in ultrasound B-mode images. IEEE Transactions on Medical Imaging, 27(5):608-615.


• Sasaki K, Neptune RR, Burnfield JM, Mulroy SJ (2008). Muscle contributions to body support and propulsion in toe walking. Gait and Posture,27:440-446.


• Burnfield JM, Powers CM (2007). The Role of Center of Mass Kinematics in Predicting Peak Utilized Coefficient of Friction during Walking. Journal of Forensic Sciences, 52(6):1328-1333.


• Burnfield JM, Jorde AG, Augustin TR, Augustin TA, Bashford GR (2007). Variations in plantar pressure variables across five cardiovascular exercises. Medicine and Science in Sports and Exercise, 39(11):2012-2020.


• Neptune RR, Burnfield JM, Mulroy SJ (2007). The neuromuscular demands of toe walking: A forward dynamics simulation analysis. Journal of Biomechanics, 40(6):1293-1300.


• Burnfield JM, Powers CM(2006). Prediction of slips: An evaluation of utilized coefficient of friction and available slip resistance. Ergonomics, 49(10):982-995.


• Kulig K, Pomrantz AB, Burnfield JM, Reischl SF, Mais-Requejo S, Thordarson DB, Smith RW (2006). Non-operative management of posterior tibialis tendon dysfunction: design of a randomized clinical trial [NCT00279630]. BMC Musculoskeletal Disorders, 7:49.


• Burnfield JM, Powers CM (2006). Normal and Pathological Gait, Chapter 16. In Placzek J, Boyce D (Eds). Orthopaedic Physical Therapy Secrets, Second Edition. Elsevier, Inc. Philadelphia, PA.


• Mohamed OS, Cerny K, Jones W, Burnfield JM (2005). Effect of terrain on foot pressures during walking. Foot and Ankle International, 26(10): 859-869.


• Burnfield JM, Tsai Y-J, Powers CM (2005). Comparison of Utilized Coefficient of Friction during Different Walking Tasks in Persons with and without a Disability. Gait and Posture, 22(1): 82-88.


• Kulig K, Burnfield JM, Reischl S, Requejo SM, Blanco, CE, Thordarson, DB (2005). Effect of Foot Orthoses on Tibialis Posterior Activation in Persons with Pes Planus. Medicine and Science in Sports and Exercise, 37(1): 24-29.


• Perry J, Burnfield JM, Newsam CJ, Conley P (2004). Energy expenditure and gait characteristics of a person with bilateral amputations walking with the "C-Leg" compared to stubby and conventional articulating prostheses. Archives of Physical Medicine and Rehabilitation, 85(10):1711-1717.


• Burnfield JM, Few CD, Mohamed OS, Perry J (2004). The influence of velocity and footwear on walking plantar pressures in the older adult. Clinical Biomechanics, 19(1):78-84.


• Perry J, Weiss W, Burnfield JM, Gronley JK (2004). The supine hip extensor manual muscle test. Archives of Physical Medicine and Rehabilitation, 85(8):1345-1350.


• Kulig K, Burnfield JM, Requejo SM, Sperry M, Terk MR (2004). Selective activation of the tibialis posterior: Evaluation by Magnetic Resonance Imaging. Medicine & Science in Sports & Exercise, 36(5):862-867.


• Burnfield JM, Powers CM (2003). Influence of age and gender on utilized coefficient of friction during walking at different speeds. Metrology of Pedestrian Locomotion and Slip Resistance, STP #1424:3-16.


• Perry J, Burnfield JM, Gronley JK, Mulroy SJ (2003). Toe walking: Muscular demands at the ankle and knee. Archives of Physical Medicine and Rehabilitation, 84:7-16.


• Powers CM, Burnfield JM, Lim P, Brault JR, Flynn JE (2002). Utilized coefficient of friction during walking: Static estimates exceed measured values. Journal of Forensic Sciences, 47(6):1303-1308.


• Bober T, Kulig K, Burnfield JM, Pietraszewski B (2002). Development of predictive equations for dynamic torque characteristics generated by appendicular musculature. Acta of Bioengineering and Biomechanics, 4(2):49-60.


• Burnfield JM, Josephson KR, Powers CM, Rubenstein LZ (2000). The influence of lower extremity joint torque on gait characteristics in elderly men. Archives of Physical Medicine and Rehabilitation, 81(9):1153-7.

• Culver, L, Burnfield JM. Promoting physical fitness from acute care to the community: When just walking isn't an option (3 hour course). Accepted, American Physical Therapy Association's 2008 Annual Conference and Exposition.


• Burnfield JM, Eberly VJ, Gronley JK, Mulroy SJ, Perry J, Yule W (2008). Ramp negotiation improved in K-2 level individuals with a transfemoral amputation when using a stance phase microprocessor-controlled prosthetic knee unit. Conference proceedings, Gait and Clinical Movement Analysis Society 13th Annual Meeting. The Battlefield and Beyond: Fusing Technology with Function, pgs. 120-121.


• Eberly VJ, Gronley JK, Mulroy SJ, Perry J, Yule W, Burnfield JM (2008). Walking function improved during ambulation with a microprocessor-controlled knee prosthesis in K-2 level walkers. Conference proceedings, Gait and Clinical Movement Analysis Society 13th Annual Meeting. The Battlefield and Beyond: Fusing Technology with Function, pgs. 302-303.


• Terryberry-Spohr LS, Burnfield JM (2008). Interdisciplinary management of concussive events in high school athletes: The importance of the neuropsychologist in detection and monitoring of concussive injuries. Journal of the International Neuropsychological Society, 14 (S), 241. Merit Award.


• Eberly VJ, Gronley JK, Yule W, Perry J, Burnfield JM (2008). Walking Function and Stability Enhanced in K-2 Level Individuals with Transfemoral Amputations when Using a Stance Phase Microprocessor-Controlled Prosthetic Knee Unit. American Academy of Orthotists and Prosthetists 34th Annual Meeting and Scientific Symposium.


• Terryberry-Spohr, L, Fager, S, Burnfield, JM (2007). A multidisciplinary approach to providing services across the healthcare continuum for persons with traumatic brain injury. Part I - Prevention and early intervention of mild tbi and concussion: Part II - New augmentative and alternative communication options for persons with severe traumatic brain injury; Part III - Maximizing opportunities for participation, function, and health following discharge. Proceedings of the 5th Annual American Medical Rehabilitation Providers Educational Conference.


• Sasaki K, Neptune RR, Burnfield JM, Mulroy SJ (2007). Muscle contributions to body-segment mechanical power during able-bodied toe walking. Proceedings CD of the American Society of Biomechanics Annual Meeting.


• Sasaki K, Neptune RR, Burnfield JM, Mulroy SJ (2007). Muscle contributions to body support and forward propulsion with increasing walking speed. Abstracts of 18th Conference of the International Society for Posture and Gait Research, pgs 159-160.


• Burnfield JM, Buster TW, Provorse A, Takahashi S (2007). Muscular demands during elliptical training compared to overground walking. CD of Abstracts, World Physical Therapy 2007, World Confederation for Physical Therapy.


• Takahashi S, Burnfield JM, Buster TW, Provorse AR (2007). Comparison of Gluteal Muscle Electromyographic Activity across Five Cardiovascular Exercises in Healthy Young Adults. Medicine and Science in Sports and Exercise, Volume 39:5 S255.


• Burnfield JM, Buster TW, Takahashi S (2007). Increased Diabetic Risk for Individuals with Disabilities - A Need for Adaptations and Monitoring. CDC's 30th Diabetes Translation Conference - Looking Back and Moving Forward, Abstract Book.


• Bashford GR, Augustin TR, Jorde AG, Augustin TA, Burnfield JM (2007). Physical Activity Classification Using Linear Discriminant Analysis on Fourier Parameters of Accelerometer Signals. Proceedings CD, 2007 Institute for Biological Engineering (IBE) Meeting, IBE Abstract #004.


• Jorde AG, Ogren SR, Augustin TR, Augustin TA, Bashford GR, Burnfield JM (2006). Plantar pressure variations during exercise on four pieces of commercially available cardiovascular equipment. Proceedings CD, American Society of Biomechanics, 30th Annual Meeting.


• Buster TW, Ginoza LM, Burnfield JM (2006). Comparison of lower extremity sagittal plane kinematics during overground gait, treadmill walking and elliptical training. Proceedings CD, American Society of Biomechanics, 30th Annual Meeting.


• Pomrantz A, Reischl S, Requejo S, Burnfield JM, Kulig K (2006). Long-term effectiveness of progressive resistive exercise on posterior tibialis tendon dysfunction: a randomized clinical trial. Journal of Orthopaedic and Sports Physical Therapy, 36(1):A54.


• Neptune R, Burnfield JM, Mulroy SJ (2005). Ankle plantar flexor force capacity during toe walking. Proceedings CD of the XXth Congress of the International Society of Biomechanics.


• Burnfield JM, Few CD, Whitney JA, Taji S, Perry J (2005). Longitudinal effectiveness of custom molded inserts at reducing plantar pressures in persons with partial foot amputation secondary to diabetes mellitus. Proceedings, Tenth Annual Gait and Clinical Movement Analysis Society Meeting, pgs. 41-42.


• Requejo P, Burnfield JM, Leach J (2005). Modeling of the onset of slip during walking. Proceedings, Tenth Annual Gait and Clinical Movement Analysis Society Meeting, pgs. 176-177.


• Weimer KM, Reischl SF, Requejo SM, Burnfield JM, Kulig K (2005). Nonoperative treatment of posterior tibialis tendon dysfunction: a randomized clinical trial. Journal of Orthopaedic and Sports Physical Therapy, 35(1):A57.


• Burnfield JM, Few CD, Whitney JA, Taji SS, Chambers RB, Perry J (2004). Influence of PEDAR-based insert modifications on walking plantar pressures in persons with diabetes mellitus. Proceedings, Ninth Annual Gait and Clinical Movement Analysis Society Meeting, pgs. 78-79.


• Burnfield JM, Powers CM (2004). Prediction of slips during walking: An analysis of utilized coefficient of friction and available slip resistance. Proceedings, American Academy of Forensic Sciences, Vol. X, pg. 145.


• Whitney JA, Burnfield JM, Few CD, Taji SS, O'Hara M, Perry J (2004). Influence of custom inserts on plantar pressures during ambulation in persons at risk for ulceration secondary to diabetes mellitus. Journal of Geriatric Physical Therapy, 26(3), pg. 37.


• Weiss W, Burnfield JM, Gronley JA, Perry J (2004). Supine hip extensor manual muscle test. Journal of Geriatric Physical Therapy, 26(3), pg. 35.


• Liao G, Kulig K, Burnfield JM, Mais-Requejo S, Reischl S, Thordarson D (2004). The effect of an orthosis on tibialis posterior activation in persons with pes planus. Journal of Orthopaedic and Sports Physical Therapy, 34(1), pgs. A23-A24.


• Burnfield JM, Powers CM (2003). The probability of slipping during walking: examination of tribometric measures of floor surface slip resistance and utilized coefficient of friction. Training Workshop, National Center for Medical Rehabilitation Research, National Institute of Child Health and Human Development, NIH, and National Institute of Neurological Disorders and Stroke, pg. 78.


• Burnfield JM, Few CD, Tsai J, Powers CM (2003). Prediction of peak utilized coefficient of friction requirements during walking based on center of mass kinematics. Proceedings, International Society of Biomechanics XIXth Congress.


• Sperry M, Burnfield JM, Mais-Requejo S, Reischl SF, Thordarson D, Terk M, Kulig K (2003). MRI evaluation of muscle activation associated with three posterior tibialis exercises. Medicine and Science and Sports and Exercise, 35(5) 1532, Supplement.


• Burnfield JM, Tsai YJ, Powers CM (2003). Comparison of utilized coefficient of fiction requirements in older persons with and without a disability to younger persons during different walking tasks. Gait and Clinical Movement Analysis Society, 8th Annual Meeting Proceedings, pgs. 99-100.


• Mohamed O, Cerny K, Hui L, Jones W, Burnfield JM (2003). Effect of terrain on foot pressures during walking. Gait and Clinical Movement Analysis Society, 8th Annual Meeting Proceedings, pgs. 235-236.


• Burnfield JM, Powers CM. Relationship between center of mass kinematics and peak utilized coefficient of friction during walking. Proceedings, Southern California Conference on Biomechanics, pg. 3.


• Burnfield JM, Tsai J, Souza R, Popovich J, Powers CM (2002). Comparison of coefficient of friction requirements during level walking and stair descent in persons with and without a cerebral vascular accident. Journal of Geriatric Physical Therapy, 25(3), pg. 25.


• Cummings CD, Burnfield JM, Mohamed O, Perry J (2002). The influence of walking speed and footwear on plantar pressure values in older adults. Journal of Geriatric Physical Therapy, 25(3), pgs. 25-26.


• Farrokhi S, Kulig K, Burnfield JM, Powers CM (2002). In vivo assessment of the lumbar spine's instantaneous axes of rotation in symptomatic and asymptomatic subjects. Proceedings of the World Congress of Biomechanics 2002.


• Burnfield JM, Powers CM (2001). Influence of age on utilized coefficient of friction required during walking. Journal of Geriatric Physical Therapy, 24(3), pgs. 14-15.


• Burnfield JM, Flanagan S, Flynn JE, Brault J, Powers CM (2001). Utilized coefficient of friction during ascending and descending stairs. XVIIIth Congress of the International Society of Biomechanics, Book of Abstracts, pgs. 44-45.


• Burnfield JM, Lim P, Brault J, Flynn JE, Powers CM (2001). Comparison of utilized coefficient of friction requirements among persons of different ages during shod walking at different speeds. Proceedings of the American Society for Testing and Materials, Symposium on Metrology of Pedestrian Locomotion and Slip Resistance, pg. 15.


• Powers CM, Burnfield JM (2001). Comparison of utilized coefficient of friction requirements across walking conditions. Proceedings of the American Society for Testing and Materials, Symposium on Metrology of Pedestrian Locomotion and Slip Resistance, pg. 16.


• Burnfield JM, Gronley J, Mulroy SJ, Perry J (2001). Muscular demands at the ankle of toe walking. Gait and Posture, 13(3), pg. 244.


• Burnfield JM, Lim P, Flynn JE, Brault J, Powers CM (2001). Comparison of utilized coefficient of friction requirements between males and females during shod walking at different speeds. Proceedings - American Academy of Forensic Sciences, vol. 7, pgs. 92-93.


• Flynn JE, Underwood D, Powers CM, Burnfield JM, Brault J (2001). An evaluation of the reproducibility of data obtained from two types of tribometers when measuring the slip resistance of walkway surfaces. Proceedings - American Academy of Forensic Sciences, vol. 7, pg. 94.


• Powers CM, Burnfield JM, Brault JR, Flynn JE (2000). Comparison of coefficient of friction requirements during gait to tribometry measurements: Evaluation of shod and barefoot conditions at various walking speeds. Proceedings of the National Occupational Injury Research Symposium, pg. 38.


• Burnfield JM, Powers CM, Winstein CJ (2000). Enhanced voluntary and triggered arm use following constraint-induced (CI) movement therapy in post-stroke hemiparesis. 2nd Annual Southern California Conference on Biomechanics, proceedings, Abstract 1.


• Burnfield JM, Boyd LA, Mulroy SJ, Perry J (2000). The impact of partial foot amputations on plantar pressure and gait characteristics in persons with diabetes mellitus. 2nd Annual Southern California Conference on Biomechanics, proceedings, Abstract 22.


• Burnfield JM, Boyd LA, Mulroy SJ, Perry J (2000). The impact of transmetatarsal amputation on gait characteristics. Issues on Ageing, 23(1), pg. 26.


• Burnfield JM, Powers CM, Winstein CJ (1999). Enhanced voluntary and triggered arm use following constraint-induced (CI) movement therapy in post-stroke hemiparesis. Society for Neuroscience Abstracts, 25(1), pg. 908.


• Burnfield JM, Bontrager EL, Boyd LA, Rao SS, Mulroy SJ, Gronley JK, Perry J (1999). Effect of prosthetic malalignment on EMG and intra socket pressures in an individual with a trans-tibial amputation. Gait and Posture, 9(2), pg. 137.


• Boyd LA, Rao SR, Burnfield JM, Mulroy SJ, Perry J (1999). Forefoot rocker mechanics in individuals with partial foot amputation. Gait and Posture, 9(2), pg. 144.


• Burnfield JM, Josephson KR, Powers CM, Rubenstein LZ (1998). The influence of lower extremity joint torque and joint motion on gait characteristics in elderly individuals. The Gerontologist, 38(1), pgs. 101-102.


• Burnfield JM, Boyd LA, Rao SS, Mulroy SJ, Perry J (1998). The effect of partial foot amputation on sound limb loading force during barefoot walking. Gait and Posture, 7(2), pgs. 178-179.


• Dorostkar M, Ayyappa E, Perry J, Chambers R, Burnfield JM, Boyd L, Bontrager E, Rao S, Mulroy S (1998). Gait mechanics of partial foot amputee. Department of Veterans Affairs, Rehabilitation Research and Development Progress Reports 1997, 35(July), pgs. 17-18.

• Burnfield JM, Goulet C. Updated Guidelines for the George Blanton Research Grant - Basic Strategies for Designing a Strong Clinical Study. Nebraska Physical Therapy Association Annual Meeting. Lincoln, NE. October 2007.


• Observational Gait Analysis - A Systematic, Evidence-based Approach. Creighton University. Omaha, NE. July 2007 (one day course for clinicians from across the United States).


• Observational Gait Analysis - Enhancing Patient Outcomes by Focusing on the Fundamentals. Clinical Doctorate in Physical Therapy Program, Creighton University. Omaha, NE. June 2007 (one day seminar).


• Observational Gait Analysis: How Knowledge of the Fundamentals Can Enhance Patient Outcomes. Clinical Doctorate in Physical Therapy Program, University of South Dakota. Vermillion, SD. October 2007, November 2006 (one day course).


• Gait Analysis: Applications for Guiding Clinical Case Study Development. Evangelischen Krankenhaus Dusseldorf, Germany. May 2007 (three day course).


• Rehabilitation of Persons with Lower Extremity Amputations: An Emphasis of Optimizing Walking Function. Menorah Medical Center. Kansas City, MO. October 2006 (one day course).


• Observational Gait Analysis: Refining Knowledge and Skills to Enhance Patient Outcomes. Nebraska Chapter of the American Physical Therapy Association Annual Meeting. Lincoln, NE. September, 2005.


• Applied observational gait analysis: Enhancing rehabilitation outcomes of persons with an orthosis or prosthesis. Havasu Orthotics and Prosthetics. Lake Havasu City, AZ. March, 2005.


• Clinicial research: Fall prevention interventions for the older adult. Institute for Rehabilitation and Science Engineering, Madonna Rehabilitation Hospital. Lincoln, NE. February, 2004.


• Human and environmental factors contributing to slips during walking. Creighton University, Department of Physical Therapy. Omaha, NE. November, 2003


• Predicting utilized coefficient of friction during gait: Is it possible? American Society of Testing and Materials International Committee F13 (Pedestrian / Walkway Safety and Footwear) Symposium on Human Ambulation Factors in Slip and Fall Events. Pasadena, CA. June, 2003.


• Relationship between utilized and available coefficient of friction in predicting slip events during gait. American Society of Testing and Materials International Committee F13 (Pedestrian / Walkway Safety and Footwear) Symposium on Human Ambulation Factors in Slip and Fall Events. Pasadena, CA. June, 2003.


• Gait Analysis using the Rancho Observational Gait Analysis System (Ganganalyse nach Rancho Los Amigos Medical Center Aufbaukurs Ganganalyse). Evangelischen Krankenhaus Dusseldorf, Germany. October, 2002.


• Neurologic Gait Analysis. Casa Colina Rehabilitation Facility. Pomona, California. September, 2002 (two day course).


• Observational Gait Analysis: The Rancho Method. Board of the Canadian Physiotherapy Association - Manitoba Branch. Winnipeg, Manitoba, Canada. May, 2002.


• Slip events during walking: Biomechanical considerations. School of Medical Rehabilitation, University of Manitoba. Winnipeg, Manitoba, Canada. May, 2002.


• Biomechanical factors associated with slips and falls in gait. Board of the Association of Rehabilitation Medicine of Manitoba. Winnipeg, Manitoba, Canada. May, 2002.


• Gait Assessment in the Elderly. Falls Prevention and Management in Older Persons Conference, sponsored by the Geriatric Research Education and Clinical Center. Marina Del Rey, CA. September, 2000.


• Observational Gait Analysis and Pathological Gait Mechanisms. University of Southern California. Los Angeles, CA. August, 2000.