Woei-Nan Bair, PT, PhD

Woei-Nan Bair

Woei-Nan Bair PT, PhD

Assistant Professor of Physical Therapy


PhD, University of Maryland, College Park

MS, Queen’s University, Canada

BS, School of Rehabilitation Medicine, Physical Therapy Division, Taipei, Taiwan

Research Interests

Postural control across the lifespan

Gait function across the lifespan

Falls in older adults


My research focuses on two fundamental motor functions (i.e., posture and gait) across the lifespan, and interventions for related dysfunctions such as falls. My research mainly involves the first two levels of the ICF framework. For the impairment level, I adapt a movement system approach to examine relevant physiological systems subserving posture and gait, with emphasis on musculoskeletal and neuromuscular systems. I have investigated contributions of multi-sensory integration, muscle performance and muscular activations to posture and gait. For the functional level, I implement laboratory techniques such as motion capture, electromyography, force plate and specialized treadmill (click on picture below for video link) to analyze control and dysfunction of posture, gait, and simulated-falls. I am planning to expand my research to the participation level of ICF framework. Specific efforts will be invested into sensor-based posture and gait analysis to be used in community settings, patient reported community mobility, and community-based “walking for exercise” programs. See ActiveStep for Website - YouTube. I teach in Research Methods, Biomechanics and Kinesiology, Pediatrics and Geriatric Physical Therapy courses.

Selected Scholarly Activity

Bair, W-N., Petr, M., Alfaras, I., Mitchell, S.J., Bernier, M., Ferrucci, L., Studenski, S.A., and De Cabo, R. “Of Aging Mice and Men: Gait Speed Decline Is a Translatable Trait, With Species-Specific Underlying Properties.” The Journals of Gerontology: Series A 74, no. 9 (August 16, 2019): 1413–16. https://doi.org/10.1093/gerona/glz015.

Nathalie, C., Bair, W-N., Resnick, S.M., Studenski, S.A., and Decker, L.M. “Prediagnostic Markers of Idiopathic Parkinson’s Disease: Gait, Visuospatial Ability and Executive Function.” Gait & Posture 68 (February 1, 2019): 500–505. https://doi.org/10.1016/j.gaitpost.2018.12.039.

Qu, T., Bair, W-N., Resnick, S.M., Bilgel, M., Wong, D.F., and Studenski, S.A. “β-Amyloid Deposition Is Associated with Gait Variability in Usual Aging.” Gait & Posture 61 (March 1, 2018): 346–52. https://doi.org/10.1016/j.gaitpost.2018.02.002.

Bair, W-N., and Studenski, S.A. “A Novel Integrated Approach to Age-Related Gait Change: Planar Covariation of Elevation Angles.” Innovation in Aging 1, no. suppl_1 (July 1, 2017): 1224–1224. https://doi.org/10.1093/geroni/igx004.4448.

Fujimoto, M., Bair, W-N., and Rogers, M.W. “Single and Multiple Step Balance Recovery Responses Can Be Different at First Step Lift-off Following Lateral Waist-Pull Perturbations in Older Adults.” Journal of Biomechanics, February 2017. https://doi.org/10.1016/j.jbiomech.2017.02.014.

Addison, O., Inacio, M., Bair, W-N., Beamer, B.A., Ryan, A.S., and Rogers, M.W. “Role of Hip Abductor Muscle Composition and Torque in Protective Stepping for Lateral Balance Recovery in Older Adults.” Archives of Physical Medicine and Rehabilitation 0, no. 0 (2017). https://doi.org/10.1016/j.apmr.2016.10.009.

Qu, T., Chastan, N., Bair, W-N., Resnick, S.M., Ferrucci, L., and Studenski, S.A. “The Brain Map of Gait Variability in Aging, Cognitive Impairment and Dementia—A Systematic Review.” Neuroscience & Biobehavioral Reviews 74, Part A (March 2017): 149–62. https://doi.org/10.1016/j.neubiorev.2017.01.020.

Bair, W-N., Prettyman, M.G., Beamer, B.A., and Rogers, M.W. “Kinematic and Behavioral Analyses of Protective Stepping Strategies and Risk for Falls among Community Living Older

Adults.” Clinical Biomechanics 36 (July 2016): 74–82. https://doi.org/10.1016/j.clinbiomech.2016.04.015.

Fujimoto, M., Bair, W-N., and Rogers, M.W. “Center of Pressure Control for Balance Maintenance during Lateral Waist-Pull Perturbations in Older Adults.” Journal of Biomechanics 48, no. 6 (April 13, 2015): 963–68. https://doi.org/10.1016/j.jbiomech.2015.02.012.

Bair, W-N., Kiemel, T., Jeka, J.J., and Clark, J.E. “Development of Multisensory Reweighting Is Impaired for Quiet Stance Control in Children with Developmental Coordination Disorder (DCD).” PloS One 7, no. 7 (2012): e40932. https://doi.org/10.1371/journal.pone.0040932

Bair, W-N., Barela, J.A., Whitall, J., Jeka, J.J., and Clark. J.E. “Children with Developmental Coordination Disorder Benefit from Using Vision in Combination with Touch Information for Quiet Standing.” Gait and Posture 34, no. 2 (2011): 183–90. https://doi.org/10.1016/j.gaitpost.2011.04.007.

Bair, W-N., Kiemel, T., Jeka, J.J., and Clark, J.E. “Development of Multisensory Reweighting for Posture Control in Children.” Experimental Brain Research 183, no. 4 (2007): 435–46. PMCID: PMC2720682

Contact Information

Office location: Glasser Hall, Room 109
Mailing address: University of Sciences
600 South 43rd Street
Philadelphia, PA 19104-4495
Office Phone: 215-596-8529

wbair [at] usciences [dot] edu