Research Topics
| Rakie ChamSummaryAffiliation: University of Pittsburgh Country: USA Publications
Research Grants
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Detail Information
Publications
Striatal dopaminergic denervation and gait in healthy adultsR 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...
Age-related striatal dopaminergic denervation and severity of a slip perturbationRakie 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...- Striatal dopamine denervation and sensory integration for balance in middle-aged and older adultsRakie 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... - Differences in geriatric anthropometric data between DXA-based subject-specific estimates and non-age-specific traditional regression modelsApril J Chambers
Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
J Appl Biomech 27:197-206. 2011.... - Validation of a measure of smoothness of walkingJennifer S Brach
Department of Physical Therapy, University of Pittsburgh, Pennsylvania, USA
J Gerontol A Biol Sci Med Sci 66:136-41. 2011.... - Measurements of wrist and finger postures: a comparison of goniometric and motion capture techniquesJames 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... - Biomechanics of slipsM 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... - A randomized trial of two forms of therapeutic activity to improve walking: effect on the energy cost of walkingJessie 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... - Knee strength capabilities and slip severitySarah 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... - The influence of flooring on standing comfort and fatigueM 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... - Lower extremity corrective reactions to slip eventsR 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... 
Biomechanics of trailing leg response to slipping - evidence of interlimb and intralimb coordinationB 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...- Impact of joint torques on heel acceleration at heel contact, a contributor to slips and fallsK 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... - Effect of flooring on standing comfort and fatigueR 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... - Slip-related muscle activation patterns in the stance leg during walkingApril 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... - Kinematics of the fingers and hands during computer keyboard useNancy 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... - Changes in gait when anticipating slippery floorsRakie 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... - The effect of obesity and gender on body segment parameters in older adultsApril 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... - The impact of a systematic reduction in shoe-floor friction on heel contact walking kinematics-- A gait simulation approachA 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... - Gait parameters as predictors of slip severity in younger and older adultsB 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 Grants
- Biomechanics of Slips in Older AdultsRakie Cham; Fiscal Year: 2004..abstract_text> ..
- Biomechanics of Slips in Older AdultsRakie 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. ..
- Biomechanics of Slips in Older AdultsRakie 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. ..