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HMBL Team

 

Faculty and Staff
Mark S. Redfern, PhD 
Rakié Cham, PhD 
April J. Chambers, PhD 
Arash Mahboobin, PhD 
Kurt E. Beschorner, PhD
Patrick J. Loughlin, PhD 
Jarad Prinkey, MS 
Jenna M. Trout, BS

Graduate Students
Arian Iraqi
Zach Merrill
Seyed Reza M.Moghaddam
Caitlin O'Connell

Undergraduate Students
Iman Benbourenane
Joanie Guyer
Molly Knewtson
Ryan Le Grand
Eric Weston 

Affiliated Faculty and Researchers 

Previous Faculty, Staff, and Students  



Faculty and Staff


 

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Mark S. Redfern, PhD

Vice Provost for Research                    
Professor - Departments of Bioengineering, Otolaryngology, Physical Therapy and Rehabilitation

Education:  

  • BS Engineering Sciences, University of Michigan, 1978
  • MS Prosthetics, New York University, 1980
  • MS University of Michigan, Bioengineering, 1982
  • PhD Bioengineering, University of Michigan, 1988

 

Research Interests:  

  • Dr. Redfern's research for the past 15 years has focused on sensory integration processes in human postural control. He has been investigating the weighting of vision, vestibular, and proprioceptive sensory information. Subject populations of particular interest have been healthy young and older adults, patients with vestibular disorders, and children with otitis media. He has investigated the influence of different aspects of visual motion (frequency, amplitude, and peripheral/central) on postural responses.

 

Selected Publications:  

  • Sparto PJ, Aizenstein H, VanSwearingen J, Rosano C, Perera S, Studenski S, Furman J, Redfern M: “Delays in auditory-cued step initiation are related to increased volume of white matter hyperintensities in older adults.” Experimental Brain Research 188(4):633-640, 2008.
  • Jacob RG, Redfern MS, Furman, JM: “Space and motion discomfort and abnormal balance in patients with anxiety disorders.” Journal of Neurology, Neurosurgery & Psychiatry, [EPub ahead of Print], July 2008.
  • Beschorner K, Lovell M, Higgs CF, Redfern MS: “A mixed-lubrication model for shoe-floor friction applied to pin-on-disk apparatus.” ASME Journal of Tribology, April 2008.

 

University Webpage 

 
 

 

 

Rakié Cham, PhD

Associate Professor - Department of Bioengineering

Education:  

  • BS, McGill University, Montreal, Quebec, Canada, 1993
  • MS, McGill University, Montreal, Quebec, Canada, 1995
  • PhD, University of Pittsburgh, Bioengineering, 2000

 

Research Interests:  

  • Dr. Cham is an Associate Professor in the Department of Bioengineering at the University of Pittsburgh. She is a bioengineer by training and her research expertise and interests are focused on postural strategies generated in response to sensory and motor perturbations during walking in various populations. Other interests of Dr. Cham include the impact of age and obesity on body segment parameters. 

 

Selected Publications:  

  • Cook J, Baker NA, Cham R, Cidboy E, Redfern MS: “Measurements of wrist and finger postures: a comparison of goniometric and motion capture techniques.” Applied Biomechanics, 23(1): 70-78, 2007.
  • Cham R, Studenski SA, Perera S, Bohnen NI: “Striatal dopaminergic denervation and gait in healthy adults.” Experimental Brain Research, 185(3):391-398, 2008.
  • Cham R, Redfern MS: “Biomechanics of trailing leg response to slipping: Evidence of interlimb and intralimb coordination.” accepted Gait & Posture, September 2008.

 

University Webpage 

 
 

 

 

April J. Chambers, PhD

Director, HMBL 
Research Assistant Professor

Education:  

  • BS Bioengineering, University of Pittsburgh, 2003
  • MS Bioengineering, University of Pittsburgh, 2005
  • PhD Bioengineering, University of Pittsburgh, 2011

 

Research Interests:                          

  • April J. Chambers, PhD is a Research Assistant Professor of Bioengineering at the University of Pittsburgh. Dr. Chambers is a bioengineer with research expertise in the fields of gait biomechanics and fall prevention. Dr. Chambers also serves as the Laboratory Director of the Human Movement and Balance Laboratory. She is particularly interested in injury prevention in healthy and clinical young/elderly adult populations. Dr. Chambers is currently working on projects that examine fall risk in older adult amputees, muscle fatigue during long term standing or walking, the shoe-floor interface during slipping, and obesity effects on body composition. Dr. Chambers is also interested in ergonomics, product design, and translational research.

 

Selected Publications:  

 

University Webpage 

 

Arash_2012_new 

 

Arash Mahboobin, PhD

Research Assistant Professor

Education:  

  • BS Azad University, Biomedical Engineering, 1998
  • MS University of Illinois, General Engineering, 2002
  • PhD Electrical Engineering, University of Pittsburgh, 2007

 

Research Interests:  

  • Dr. Mahboobin is currently a Research Assistant Professor in the Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, with research interests spanning computational biomechanics, human gait biomechanics, human postural control, humanoid robotics, bio-signal processing, and assistive devices. His research activity includes experimental and computational efforts focused on human movement and balance, specifically analysis and modeling of human postural control and gait biomechanics, with the overall goal of mobility improvement and fall prevention/reduction in older adults as well as in persons with balance and gait deficits.
     

 

Selected Publications:  

 

 

 

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Kurt E. Beschorner, PhD

Research Assistant Professor

Education:  

  • BS, Mechanical Engineering, University of Illinois at Urbana-Champaign, 2004
  • PhD, Bioengineering, University of Pittsburgh, 2008

 

Research Interests:  

  • Dr. Beschorner’s research focuses core competencies in whole-body biomechanics and biotribology to prevent occupational and clinical falls. Dr. Beschorner’s current research topics include 1) developing and applying innovative methods to model and assess the tribological interaction between shoe and floor surfaces in order to prevent slips and falls; 2) identify the personal and environmental factors that contribute to falls from ladders and develop strategies to reduce these falls; and 3) assessing the negative effects of multifocal lens glasses (bifocals/progressive lens glasses) on walking balance and identifying compensation strategies that improve balance.
     

 

Selected Publications:  

 

 
 

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Patrick J. Loughlin, PhD

William Kepler Whiteford Professor of Bioengineering, and Electrical & Computer Engineering

Education:  

  • BS Biomedical Engineering, Boston University, 1985
  • MS Bioengineering, University of Utah, 1988
  • PhD Electrical Engineering, University of Washington, 1992

 

Research Interests:  

  • Dr. Loughlin has been actively engaged in human balance studies for about 20 years. Dr. Loughlin has a particular interest in time-varying characteristics and computational modeling of postural control in different populations, including young adults, older adults and vestibular patients. More recently Dr. Loughlin has begun investigations into the design of vibrotactile feedback to improve balance and gait. Dr. Loughlin pioneered the application of engineering system identification methods to tune vibrotactile feedback to the patient's specific balance deficit, analogous to how hearing aids and other sensory prostheses are customized to the patient.

 

Selected Publications:  

 

University Webpage 

 

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Jarad Prinkey, MS

Research Engineer

Education:  

  • BS Bioengineering, University of Pittsburgh, 2000
  • MS Bioengineering, University of Pittsburgh, 2002

 

Research Interests:  

  •  

 

 
     

Jenna_old 

  

Jenna M. Trout BS

Lab Manager

Education:  

  • BS Bioengineering, University of Pittsburgh, 2009

 

Research Interests:  

  •  

 

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Graduate Students

 
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Arian Iraqi

Graduate Student Researcher (PhD)

Education:  

  • M.S. Mechanical Engineering with emphasis on Structural Mechanics, Blekinge Institute of Technology, Sweden, 2013
  • Bachelor of Engineering (Honors) Mechanical, Multimedia University, Malaysia, 2011

 

Research Interests:  

  • Tribology
  • Biomechanics
  • Computational Engineering

 

Current Projects:  

  • Comparison of Interfacial Fluid Pressures Generated Across Common Shoe-Floor Friction Testing Apparatuses 

 

Selected Publications:                    

 

 
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Zach Merrill

Graduate Student Researcher (PhD)

Education:  

  • B.S. Bioengineering, University of Pittsburgh, 2013

 

Research Interests:  

  • Biomechanics 
  • Gait Analysis 
  • Prosthetics


  • Current Projects:  

     

    •  Obesity and Body Segment Parameters in Working Adults
     

 

 
 /uploadedImages/Labs/HMBL/People/Peyvand2014.jpg 

Seyed Reza M.Moghaddam

Graduate Student Researcher (PhD)

Education:  

  • M.S., Industrial Engineering, Ergonomics, University of Wisconsin-Milwaukee, 2013
  • M.S., Bioengineering, Biomechanics, Iran University of Science and Technology, 2012
  • B.S., Mechanical Engineering, Sharif University of Technology, 2008

 

Research Interests:  

  • Computational Engineering 
  • Tribology 
  • Biomechanics 

 

Current Projects:  

  • Computational Modeling of Shoe-Floor Friction 
 
 
              OConnell2012 

Caitlin O'Connell

Graduate Student Researcher (PhD)

Education:  

  • B.S. Biomedical Engineering, University of Rochester, 2012
  • B.A. Archaeology, Technology and Historical Structures, University of Rochester, 2012

 

Research Interests:  

  • Gait Biomechanics
  • Prosthetic Devices

 

Current Projects:  

  •  Effects of visual fields on standing balance       

 

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Undergraduate Students

 

 
              

Iman2014 

 

Iman Benbourenane

Undergraduate Student Researcher

Education:  

  • B.S. Bioengineering, University of Pittsburgh, 2016

 

Research Interests:  

  • Biomechanics

 

 
   
  

Guyer2013 

   

Joanie Guyer

Undergraduate Student Researcher

Education:  

  • B.S. Bioengineering, University of Pittsburgh, 2015

 

Research Interests:  

  • Biomechanics

 

 
              

Molly2014 

 

Molly Knewtson

Undergraduate Student Researcher

Education:  

  • B.S. Bioengineering, University of Pittsburgh, 2016

 

Research Interests:  

  • Biomechanics
  • Joint Mechanics
  • Summer 2014 Project: Obesity and Body Segment Parameters in Working Adults through the Bioengineering Summer Research Internship 

 

 
              

Ryan2014 

 

Ryan Le Grand

Undergraduate Student Researcher

Education:  

  • B.S. Mechanical Engineering, University of Pittsburgh, 2016
  • Bioengineering Minor
  • History Minor

 

Research Interests:  

  • Medical device engineering
  • Biomechanics

 

 
              

Eric2014 

 

Eric Weston

Undergraduate Student Researcher

Education:  

  • B.S. Bioengineering, University of Pittsburgh, 2015
  • Chemistry Minor

 

Research Interests:  

  • Assessing the effects of multifocal lens glasses on balance and adaptations made to improve performance Gait Biomechanics

 

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