Rehabilitation and Therapy Commons^™

Effect Of Behavioural Practice Targeted At The Motor Action Selection Network After Stroke, Jill C. Stewart Pt,Phd, Jessica F. Baird, Allison F. Lewis, Stacy L. Fritz, Julius Fridriksson

Faculty Publications

Motor action selection engages a network of frontal and parietal brain regions. After stroke, individuals activate a similar network, however, activation is higher, especially in the contralesional hemisphere. The current study examined the effect of practice on action selection performance and brain activation after stroke. Sixteen individuals with chronic stroke (Upper Extremity Fugl–Meyer motor score range: 18–61) moved a joystick with the more-impaired hand in two conditions: Select (externally cued choice; move right or left based on an abstract rule) and Execute (simple response; move same direction every trial). On Day 1, reaction time (RT) was longer in Select compared …

Effect Of Behavioural Practice Targeted At The Motor Action Selection Network After Stroke, Jill C. Stewart, Jessica F. Baird, Stacy L. Fritz, Julius Fridriksson Ph.D.

Faculty Publications

Motor action selection engages a network of frontal and parietal brain regions. After stroke, individuals activate a similar network, however, activation is higher, especially in the contralesional hemisphere. The current study examined the effect of practice on action selection performance and brain activation after stroke. Sixteen individuals with chronic stroke (Upper Extremity Fugl–Meyer motor score range: 18–61) moved a joystick with the more-impaired hand in two conditions: Select (externally cued choice; move right or left based on an abstract rule) and Execute (simple response; move same direction every trial). On Day 1, reaction time (RT) was longer in Select compared …

Integrating Survivors Of Stroke Into Exercise‐Based Cardiac Rehabilitation Improves Endurance And Functional Strength, Elizabeth Wherley Regan Dpt, Ph.D., Reed Handlery, Jill Campbell Stewart, Joseph Lee Pearson Ms,Drph, Sarah Wilcox Phd, Stacy L. Fritz Phd, Pt

Faculty Publications

Background

Cardiac rehabilitation (CR) is a structured exercise program prevalent in the United States for people with cardiovascular disease that has been shown to increase cardiovascular endurance and improve quality of life. Despite similar cardiovascular risk factors, stroke is not among the covered diagnoses for CR. The purpose of this study was to examine the participant impact of integrating survivors of stroke into the exercise portion of an existing hospital‐based CR program through measures of physical function and other health impacts and through qualitative evaluation of participant perception.

Methods and Results

Subacute and chronic survivors of stroke were integrated into …

Targeted Engagement Of The Action Selection Network During Task-Oriented Arm Training After Stroke, Jill Campbell Stewart Pt,Phd, Kaci Handlery, Jessica F. Baird, Erika L. Blanck, Geetanjali Pathak, Stacy L. Fritz

Faculty Publications

Action selection (AS), or selection of an action from a set of alternatives, is an important movement preparation process that engages a frontal-parietal network. The addition of AS demands to arm training after stroke could be used to engage this motor planning process and the neural network that supports it. The purpose of this case series is to describe the feasibility and outcomes associated with task-oriented arm training aimed at engaging the AS behavioral process and the related neural network in three individuals with chronic stroke. Three participants with mild to moderate motor deficits completed 13 to 15 sessions of …

Biomarkers Of Rehabilitation Therapy Vary According To Stroke Severity, Erin Burke Quinlan, Lucy Dodakian, Jill See, Alison Mckenzie, Jill Campbell Stewart Pt,Phd, Steven C. Cramer

Faculty Publications

Biomarkers that capture treatment effects could improve the precision of clinical decision making for restorative therapies. We examined the performance of candidate structural, functional, and angiogenesis-related MRI biomarkers before and after a 3-week course of standardized robotic therapy in 18 patients with chronic stroke and hypothesized that results vary significantly according to stroke severity. Patients were 4.1 ± 1 months poststroke, with baseline arm Fugl-Meyer scores of 20–60. When all patients were examined together, no imaging measure changed over time in a manner that correlated with treatment-induced motor gains. However, when also considering the interaction with baseline motor status, treatment-induced …

Mechanisms Of The Contextual Interference Effect In Individuals Poststroke, Nicolas Schweughofer, Jeong-Yoon Lee, Hui-Ting Goh, Youggeun Choi, Sung Shin Kim, Jill Campbell Stewart Pt,Phd, Rebecca Lewthwaite, Carolee J. Winstein

Faculty Publications

Although intermixing different motor learning tasks via random schedules enhances long-term retention compared with “blocked” schedules, the mechanism underlying this contextual interference effect has been unclear. Furthermore, previous studies have reported inconclusive results in individuals poststroke. We instructed participants to learn to produce three grip force patterns in either random or blocked schedules and measured the contextual interference effect by long-term forgetting: the change in performance between immediate and 24-h posttests. Nondisabled participants exhibited the contextual interference effect: no forgetting in the random condition but forgetting in the blocked condition. Participants at least 3 mo poststroke exhibited no forgetting in …