Rakie Cham

Summary

Affiliation: University of Pittsburgh
Country: USA

Publications

  1. ncbi request reprint Striatal dopaminergic denervation and gait in healthy adults
    R Cham
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    Exp Brain Res 185:391-8. 2008
  2. pmc Age-related striatal dopaminergic denervation and severity of a slip perturbation
    Rakie Cham
    Department of Bioengineering, University of Pittsburgh, PA 15261, USA
    J Gerontol A Biol Sci Med Sci 66:980-5. 2011
  3. ncbi request reprint Striatal dopamine denervation and sensory integration for balance in middle-aged and older adults
    Rakie Cham
    Department of Bioengineering, University of Pittsburgh, 3700 O Hara Street, 749 Benedum Hall, Pittsburgh, PA 15213, USA
    Gait Posture 26:516-25. 2007
  4. ncbi request reprint Differences in geriatric anthropometric data between DXA-based subject-specific estimates and non-age-specific traditional regression models
    April J Chambers
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    J Appl Biomech 27:197-206. 2011
  5. pmc Validation of a measure of smoothness of walking
    Jennifer S Brach
    Department of Physical Therapy, University of Pittsburgh, Pennsylvania, USA
    J Gerontol A Biol Sci Med Sci 66:136-41. 2011
  6. ncbi request reprint Measurements of wrist and finger postures: a comparison of goniometric and motion capture techniques
    James R Cook
    Department of Otolaryngology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
    J Appl Biomech 23:70-8. 2007
  7. ncbi request reprint Biomechanics of slips
    M S Redfern
    Department of Bioengineering, University of Pittsburgh, PA 15213, USA
    Ergonomics 44:1138-66. 2001
  8. ncbi request reprint Knee strength capabilities and slip severity
    Sarah A Wyszomierski
    Human Movement and Balance Laboratory, Department of Bioengineering, Pittsburgh, PA, USA
    J Appl Biomech 25:140-8. 2009
  9. pmc A randomized trial of two forms of therapeutic activity to improve walking: effect on the energy cost of walking
    Jessie M VanSwearingen
    Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA 15260, USA
    J Gerontol A Biol Sci Med Sci 64:1190-8. 2009
  10. doi request reprint Biomechanics of trailing leg response to slipping - evidence of interlimb and intralimb coordination
    B E Moyer
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
    Gait Posture 29:565-70. 2009

Research Grants

  1. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2002
  2. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2003
  3. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2004
  4. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2007
  5. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2009

Collaborators

Detail Information

Publications22

  1. ncbi request reprint Striatal dopaminergic denervation and gait in healthy adults
    R Cham
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    Exp Brain Res 185:391-8. 2008
    ..We conclude that dopaminergic physiology influences certain aspects of gait independent of age-related changes. The findings of this study may augur novel therapeutic approaches to treating gait disorders in the elderly...
  2. pmc Age-related striatal dopaminergic denervation and severity of a slip perturbation
    Rakie Cham
    Department of Bioengineering, University of Pittsburgh, PA 15261, USA
    J Gerontol A Biol Sci Med Sci 66:980-5. 2011
    ..The goal of this study was to analyze the association between the degree of SDD and the magnitude of an unexpected slip perturbation induced during gait...
  3. ncbi request reprint Striatal dopamine denervation and sensory integration for balance in middle-aged and older adults
    Rakie Cham
    Department of Bioengineering, University of Pittsburgh, 3700 O Hara Street, 749 Benedum Hall, Pittsburgh, PA 15213, USA
    Gait Posture 26:516-25. 2007
    ..Striatal dopaminergic activity decreases with normal aging...
  4. ncbi request reprint Differences in geriatric anthropometric data between DXA-based subject-specific estimates and non-age-specific traditional regression models
    April J Chambers
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    J Appl Biomech 27:197-206. 2011
    ....
  5. pmc Validation of a measure of smoothness of walking
    Jennifer S Brach
    Department of Physical Therapy, University of Pittsburgh, Pennsylvania, USA
    J Gerontol A Biol Sci Med Sci 66:136-41. 2011
    ....
  6. ncbi request reprint Measurements of wrist and finger postures: a comparison of goniometric and motion capture techniques
    James R Cook
    Department of Otolaryngology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
    J Appl Biomech 23:70-8. 2007
    ..The proposed model is useful for future investigations of finger-intensive activities by supplying accurate and unbiased measures of joint angles...
  7. ncbi request reprint Biomechanics of slips
    M S Redfern
    Department of Bioengineering, University of Pittsburgh, PA 15213, USA
    Ergonomics 44:1138-66. 2001
    ..Finally, we discuss future biomechanical research needs to help to improve walkway-friction measurements and safety...
  8. ncbi request reprint Knee strength capabilities and slip severity
    Sarah A Wyszomierski
    Human Movement and Balance Laboratory, Department of Bioengineering, Pittsburgh, PA, USA
    J Appl Biomech 25:140-8. 2009
    ..In conclusion, the ability to generate higher, more rapid knee flexion/ extension muscle moments (greater peak torque/RTD) may assist in recovery from severe slips...
  9. pmc A randomized trial of two forms of therapeutic activity to improve walking: effect on the energy cost of walking
    Jessie M VanSwearingen
    Department of Physical Therapy, University of Pittsburgh, Pittsburgh, PA 15260, USA
    J Gerontol A Biol Sci Med Sci 64:1190-8. 2009
    ..Because walking may also be energy inefficient in people with decreased mobility, another approach is to reduce energy cost by improving timing and coordination (TC) of movement...
  10. doi request reprint Biomechanics of trailing leg response to slipping - evidence of interlimb and intralimb coordination
    B E Moyer
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
    Gait Posture 29:565-70. 2009
    ..The specific trailing leg's strategy used in a slip is partially determined by pre-slip walking patterns and early stance slip dynamics...
  11. ncbi request reprint The influence of flooring on standing comfort and fatigue
    M S Redfern
    Department of Bioengineering, University of Pittsburgh, PA 15261, USA
    AIHAJ 61:700-8. 2000
    ..Further research is needed on underlying physiological causes of standing discomfort and fatigue as well as the influence of flooring properties on subjective and objective measures...
  12. doi request reprint Impact of joint torques on heel acceleration at heel contact, a contributor to slips and falls
    K Beschorner
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    Ergonomics 51:1799-813. 2008
    ..01). These data suggest that walking with reduced knee flexion torque at heel contact results in a reduced heel deceleration, a potential risk factor for slip-initiated falls...
  13. ncbi request reprint Lower extremity corrective reactions to slip events
    R Cham
    Department of Bioengineering, University of Pittsburgh, Eye and Ear Institute Building, Room 153, 203 Lothrop Street, Pittsburgh, PA 15213, USA
    J Biomech 34:1439-45. 2001
    ..This study indicates that humans generate corrective reactions to slips that are different than previously reported responses to standing perturbations translating the supporting surface...
  14. ncbi request reprint Effect of flooring on standing comfort and fatigue
    R Cham
    Department of Bioengineering, University of Pittsburgh, Pennsylvania 15237, USA
    Hum Factors 43:381-91. 2001
    ..Potential applications of this research include the reduction of work-related health problems associated with long-term standing...
  15. doi request reprint Intra-individual variability in gait and in cognitive performance are not related in the elderly
    Alison L Sukits
    a Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 21:283-95. 2014
    ..These results are not consistent with the common cause theory of aging, which predicts that cognitive and sensorimotor performance should show related declines due to age-related disruption of a common neurological substrate...
  16. ncbi request reprint Slip-related muscle activation patterns in the stance leg during walking
    April J Chambers
    Human Movement and Balance Laboratory, Department of Bioengineering, 750 Benedum Hall, Pittsburgh, PA 15261, USA
    Gait Posture 25:565-72. 2007
    ..These findings may provide a greater understanding of the higher incidence of falls in the elderly...
  17. ncbi request reprint Changes in gait when anticipating slippery floors
    Rakie Cham
    Room 153, Department of Bioengineering, Eye and Ear Institute Building, University of Pittsburgh, 203 Lothrop Street, Pittsburgh, PA 15213, USA
    Gait Posture 15:159-71. 2002
    ..Insights are also gained into the adaptations that are used to reduce the potential of slips/falls...
  18. ncbi request reprint Kinematics of the fingers and hands during computer keyboard use
    Nancy A Baker
    Department of Occupational Therapy, University of Pittsburgh, School of Health and Rehabilitation Sciences, 5012 Forbes Tower, University of Pittsburgh, Pittsburgh, PA 15260, USA
    Clin Biomech (Bristol, Avon) 22:34-43. 2007
    ..The purpose of this descriptive study was to establish normative values of the kinematics of the fingers and hands during computer keyboard use...
  19. ncbi request reprint The relationship between physical activity and thermal protective clothing on functional balance in firefighters
    Pui W Kong
    Department of Emergency Medicine, University of Pittsburgh, PA 15261, USA
    Res Q Exerc Sport 83:546-52. 2012
    ..This result was most prominent in the group reporting no physical training...
  20. doi request reprint The effect of obesity and gender on body segment parameters in older adults
    April J Chambers
    Department of Bioengineering, University of Pittsburgh, 3700 O Hara St, Pittsburgh, PA 15261, USA
    Clin Biomech (Bristol, Avon) 25:131-6. 2010
    ..The goal of this study was to report body segment parameters in adults aged 65 years and older, and to investigate the impact of aging, gender and obesity...
  21. doi request reprint The impact of a systematic reduction in shoe-floor friction on heel contact walking kinematics-- A gait simulation approach
    A Mahboobin
    Department of Bioengineering, University of Pittsburgh, USA
    J Biomech 43:1532-9. 2010
    ..These findings imply the need for early and appropriate active corrective responses to prevent a fall in environments with mu values less than the peak RCOF...
  22. ncbi request reprint Gait parameters as predictors of slip severity in younger and older adults
    B E Moyer
    Human Movement and Balance Laboratory, Department of Bioengineering, 749 Benedum Hall, University of Pittsburgh, Pittsburgh, PA 15260, USA
    Ergonomics 49:329-43. 2006
    ..The finding that older adults experienced hazardous slips at the same rate as young adults even though their SLR and FFA are smaller suggests that age is also playing a role in other aspects of postural control that impact slip severity...

Research Grants6

  1. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2002
    ..abstract_text> ..
  2. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2003
    ..abstract_text> ..
  3. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2004
    ..abstract_text> ..
  4. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2007
    ..This fundamental knowledge is required to plan, to develop and to implement effective deficits-targeted interventions focused on minimizing the risk of falling in the workplace. ..
  5. Biomechanics of Slips in Older Adults
    Rakie Cham; Fiscal Year: 2009
    ..This fundamental knowledge is required to plan, to develop and to implement effective deficits-targeted interventions focused on minimizing the risk of falling in the workplace. ..