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Full-Text Articles in Rehabilitation and Therapy
Locomotor Adaptation Is Influenced By The Interaction Between Perturbation And Baseline Asymmetry After Stroke., Christine M. Tyrell, Erin Helm, Darcy S. Reisman
Locomotor Adaptation Is Influenced By The Interaction Between Perturbation And Baseline Asymmetry After Stroke., Christine M. Tyrell, Erin Helm, Darcy S. Reisman
Department of Physical Therapy Faculty Papers
Stroke survivors without cerebellar involvement retain the ability to adapt to the split-belt treadmill; however it has been suggested that their rate of adaptation may be slowed compared to those who are neurologically intact. Depending on limb placement, the split-belt treadmill can be configured to either exaggerate baseline asymmetry, or reduce it, which may affect the behavior of adaptation or de-adaptation. The objectives of this study were to characterize the rate and magnitude of locomotor (de)adaptation in chronic stroke survivors compared to healthy matched subjects, and to evaluate whether exaggeration or reduction of baseline asymmetry impact the responses. Seventeen stroke …
Children Display Adult-Like Kinetic Pattern In The Time Domain But Not In The Frequency Domain While Walking With Ankle Load, Jianhua Wu, Toyin Ajisafe, Matthew Beerse, Huaqing Liang
Children Display Adult-Like Kinetic Pattern In The Time Domain But Not In The Frequency Domain While Walking With Ankle Load, Jianhua Wu, Toyin Ajisafe, Matthew Beerse, Huaqing Liang
Physical Therapy Faculty Research
While external load is added during locomotion, humans increase the activation of extensors during stance and suppress the initiation of flexors during swing. External load at the ankles, rather than on the waist or thigh, elicits higher activities from ankle extensors, and increases stride length and decreases cadence in adults. Spatiotemporal and kinematic patterns become adult-like in children aged 5-8 years. However, little is known if children show adult like kinetic patterns while walking with external load This study aimed to investigate differences in kinetic patterns between children and adults while walking with external ankle load using both time and …
Walking Pattern In Children With And Without Down Syndrome Via A Force-Driven Harmonic Oscillator Model, Jianhua Wu, Matthew Beerse, Toyin Ajisafe, Huaqing Liang
Walking Pattern In Children With And Without Down Syndrome Via A Force-Driven Harmonic Oscillator Model, Jianhua Wu, Matthew Beerse, Toyin Ajisafe, Huaqing Liang
Physical Therapy Faculty Research
Children with Down syndrome (DS) display poorer kinematic and kinetic patterns of walking than typically developing ( TD) children. However, little is known on neuromuscular control in children with DS during locomotion. A force driven harmonic oscillator (FDHO) model sheds light on general muscular activation with respect to the gravitational load of the thigh-shank-foot system. The K/G ratio derived from this model represents a scaling between the elastic restoring torque from muscles and soft tissues and the gravitational torque from the weight of the leg during walking. The K/G ratio has shown different muscular function in infant walkers and children …
Walking Speed: The Functional Vital Sign, Addie Middletown, Stacy Fritz, Michelle M. Lusardi
Walking Speed: The Functional Vital Sign, Addie Middletown, Stacy Fritz, Michelle M. Lusardi
All PTHMS Faculty Publications
Walking speed (WS) is a valid, reliable, and sensitive measure appropriate for assessing and monitoring functional status and overall health in a wide range of populations. These capabilities have led to its designation as the “sixth vital sign”. By synthesizing the available evidence on WS, this scholarly review article provides clinicians with a reference tool regarding this robust measure. Recommendations on testing procedures for assessing WS, including optimal distance, inclusion of acceleration and deceleration phases, instructions, and instrumentation are given. After assessing an individual's WS, clinicians need to know what this value represents. Therefore, WS cut-off values and the corresponding …
Stroke-Related Effects On Maximal Dynamic Hip Flexor Fatigability And Functional Implications, Henry Kuhnen, Megan M. Rybar, Tanya Onushko, Ryan E. Doyel, Sandra K. Hunter, Brian D. Schmit, Allison Hyngstrom
Stroke-Related Effects On Maximal Dynamic Hip Flexor Fatigability And Functional Implications, Henry Kuhnen, Megan M. Rybar, Tanya Onushko, Ryan E. Doyel, Sandra K. Hunter, Brian D. Schmit, Allison Hyngstrom
Exercise Science Faculty Research and Publications
Introduction: Stroke-related changes in maximal dynamic hip flexor muscle fatigability may be more relevant functionally than isometric hip flexor fatigability. Methods: Ten chronic stroke survivors performed 5 sets of 30 hip flexion maximal dynamic voluntary contractions (MDVC). A maximal isometric voluntary contraction (MIVC) was performed before and after completion of the dynamic contractions. Both the paretic and nonparetic legs were tested. Results: Reduction in hip flexion MDVC torque in the paretic leg (44.7%) was larger than the nonparetic leg (31.7%). The paretic leg had a larger reduction in rectus femoris EMG (28.9%) between the first and last …