Posts Tagged cognition

[Abstract] Effects of an Exercise Protocol for Improving Handgrip Strength and Walking Speed on Cognitive Function in Patients with Chronic Stroke

BACKGROUND: Handgrip strength and walking speed predict and influence cognitive function. We aimed to investigate an exercise protocol for improving handgrip strength and walking speed, applied to patients with chronic stroke who had cognitive function disorder.
MATERIAL AND METHODS: Twenty-nine patients with cognitive function disorder participated in this study, and were randomly divided into one of two groups: exercise group (n=14) and control group (n=15). Both groups underwent conventional physical therapy for 60 minutes per day. Additionally, the exercise group followed an exercise protocol for handgrip using the hand exerciser, power web exerciser, Digi-Flex (15 minutes); and treadmill-based weight loading training on their less-affected leg (15 minutes) using a sandbag for 30 minutes, three times per day, for six weeks. Outcomes, including cognitive function and gait ability, were measured before and after the training.
RESULTS: The Korean version of Montreal Cognitive Assessment (K-MoCA), Stroop test (both simple and interference), Trail Making-B, Timed Up and Go, and 10-Meter Walk tests (p<0.05) yielded improved results for the exercise group compared with the control group. Importantly, the K-MoCA, Timed Up and Go, and 10-Meter Walk test results were significantly different between the two groups (p<0.05).
CONCLUSIONS: The exercise protocol for improving handgrip strength and walking speed had positive effects on cognitive function in patients with chronic stroke.

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[Abstract] Active exergames to improve cognitive functioning in neurological disabilities: a systematic review and meta-analysis

INTRODUCTION: Exergames represent a way to perform physical activity through active video games, serving as potentially useful tool in the field of neurorehabilitation. However, little is known regarding the possible role of exergames in improving cognitive functions in persons suffering from neurological disabilities.
EVIDENCE ACQUISITION: A search for relevant articles was carried out on PubMed/Medline, Scopus, PEDro, and Google Scholar. Only randomized controlled studies and non-randomized but controlled studies were retained. The following additional inclusion criteria were applied: studies focused on physical activity interventions carried out by means of exergames; populations targeted were affected by neurological disabilities; and reported results were related to cognitive outcomes. We calculated standardized mean differences (SMD) and pooled results using a random effects meta-analysis.
EVIDENCE SYNTHESIS: Of 520 abstracts screened, thirteen studies met the criteria to be included yielding a total of 465 participants, 233 randomized to exergames, and 232 allocated to the alternative or no intervention. The included studies varied in terms of studied populations (e.g., multiple sclerosis, post-stroke hemiparesis, Parkinson’s disease, dementia, dyslexia, Down syndrome), type and duration of interventions, and cognitive outcome measures. Exergames significantly improved executive functions (SMD=0.53, p=0.005; 8 studies, n=380) and visuo-spatial perception (SMD=0.65, p<0.0001; 5 studies, n=209) when compared to the alternative or no intervention. There were no significant differences for attention (SMD=0.57, p=0.07; 7 studies, n=250) and global cognition (SMD=0.05, p=0.80; 6 studies, n=161).
CONCLUSIONS: Exergames are a highly-flexible tool for rehabilitation of both cognitive and motor functions in adult populations suffering from various neurological disabilities and developmental neurological disorders. Additional high-quality clinical trials with larger samples and more specific cognitive outcomes are needed to corroborate these preliminary findings.
CLINICAL REHABILITATION IMPACT: Exergames could be considered either as a supplemental treatment to conventional rehabilitation, or as strategy to extend benefits of conventional programs at home.

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via Active exergames to improve cognitive functioning in neurological disabilities: a systematic review and meta-analysis – European Journal of Physical and Rehabilitation Medicine 2017 Oct 25 – Minerva Medica – Journals

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[Poster] Implementing Best Practices in Cognitive Rehabilitation: What are Rehabilitation Teams’ Priorities and Why?

via Implementing Best Practices in Cognitive Rehabilitation: What are Rehabilitation Teams’ Priorities and Why? – Archives of Physical Medicine and Rehabilitation

First page of article

This study represents the first step of a knowledge translation initiative to support the implementation of best practices in cognitive rehabilitation post-acquired brain injury (ABI). The objective was to identify rehabilitation teams’ priorities regarding the implementation of best practices in cognitive rehabilitation, as well as the factors influencing decision-making processes about implementation.

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[SLIDE SHOW] The Invisible Effects of Stroke – PDF File

The Invisible Effects of Stroke

By Nicole Walmsley

Overview

The objective is to:
1. identify four common invisible effects of a stroke
2. demonstrate how nursing staff can identify these on an
acute stroke unit

Download the PDF File

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[ARTICLE] Biomarkers of stroke recovery: Consensus-based core recommendations from the Stroke Recovery and Rehabilitation Roundtable – Full Text

In practical terms, biomarkers should improve our ability to predict long-term outcomes after stroke across multiple domains. This is beneficial for: (a) patients, caregivers and clinicians; (b) planning subsequent clinical pathways and goal setting; and (c) identifying whom and when to target, and in some instances at which dose, with interventions for promoting stroke recovery.2 This last point is particularly important as methods for accurate prediction of long-term outcome would allow clinical trials of restorative and rehabilitation interventions to be stratified based on the potential for neurobiological recovery in a way that is currently not possible when trials are performed in the absence of valid biomarkers. Unpredictable outcomes after stroke, particularly in those who present with the most severe impairment3 mean that clinical trials of rehabilitation interventions need hundreds of patients to be appropriately powered. Use of biomarkers would allow incorporation of accurate information about the underlying impairment, and thus the size of these intervention trials could be considerably reduced,4 with obvious benefits. These principles are no different in the context of stroke recovery as compared to general medical research.5

Interventions fall into two broad mechanistic categories: (1) behavioural interventions that take advantage of experience and learning-dependent plasticity (e.g. motor, sensory, cognitive, and speech and language therapy), and (2) treatments that enhance the potential for experience and learning-dependent plasticity to maximise the effects of behavioural interventions (e.g. pharmacotherapy or non-invasive brain stimulation).6 To identify in whom and when to intervene, we need biomarkers that reflect the underlying biological mechanisms being targeted therapeutically.

Our goal is to provide a consensus statement regarding the evidence for SRBs that are helpful in outcome prediction and therefore identifying subgroups for stratification to be used in trials.7 We focused on SRBs that can investigate the structure or function of the brain (Table 1). Four functional domains (motor, somatosensation, cognition, and language (Table 2)) were considered according to recovery phase post stroke (hyperacute: <24 h; acute: 1 to 7 days; early subacute: 1 week to 3 months; late subacute: 3 months to 6 months; chronic: > 6 months8). For each functional domain, we provide recommendations for biomarkers that either are: (1) ready to guide stratification of subgroups of patients for clinical trials and/or to predict outcome, or (2) are a developmental priority (Table 3). Finally, we provide an example of how inclusion of a clinical trial-ready biomarker might have benefitted a recent phase III trial. As there is generally limited evidence at this time for blood or genetic biomarkers, we do not discuss these, but recommend they are a developmental priority.912 We also recognize that many other functional domains exist, but focus here on the four that have the most developed science. […]

Continue —> Biomarkers of stroke recovery: Consensus-based core recommendations from the Stroke Recovery and Rehabilitation RoundtableInternational Journal of Stroke – Lara A Boyd, Kathryn S Hayward, Nick S Ward, Cathy M Stinear, Charlotte Rosso, Rebecca J Fisher, Alexandre R Carter, Alex P Leff, David A Copland, Leeanne M Carey, Leonardo G Cohen, D Michele Basso, Jane M Maguire, Steven C Cramer, 2017

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[Abstract] Music-based interventions in neurological rehabilitation

Summary

During the past ten years, an increasing number of controlled studies have assessed the potential rehabilitative effects of music-based interventions, such as music listening, singing, or playing an instrument, in several neurological diseases. Although the number of studies and extent of available evidence is greatest in stroke and dementia, there is also evidence for the effects of music-based interventions on supporting cognition, motor function, or emotional wellbeing in people with Parkinson’s disease, epilepsy, or multiple sclerosis. Music-based interventions can affect divergent functions such as motor performance, speech, or cognition in these patient groups. However, the psychological effects and neurobiological mechanisms underlying the effects of music interventions are likely to share common neural systems for reward, arousal, affect regulation, learning, and activity-driven plasticity. Although further controlled studies are needed to establish the efficacy of music in neurological recovery, music-based interventions are emerging as promising rehabilitation strategies.

Source: Music-based interventions in neurological rehabilitation

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[BLOG] Home After a Stroke – Work Smarter Instead of Harder

 

About Me

I am an occupational therapist (OT) who specialized in stroke rehab.  I continued my education by having a stroke in 2004 that paralyzed my dominant right side.  I still walk with a brace and cane, regained only partial use of my hemiplegic hand, and still have slurred speech when I’m tired.

I live alone so I am both the caregiver and the stroke survivor.  I am divorced and was not able to have children.  My two middle-aged bachelor brothers live 800 miles away and two life-long friends live 1,200 miles away.  My parents are dead.  Thank goodness I have a small army of local friends.

I had my stroke a year after I completed my doctorate in cognitive psychology.  My stroke rehab felt like my last major learning experience so I wrote a book called My Last Degree: A Therapist Goes Home After a StrokeMy sense of purpose continued to grow as I developed Power Point presentations for stroke survivor support groups, rehab professionals, and OT students.  I live in New Jersey, U.S.A.  E-mail me at homeafterastroke3@verizon.net.

The 2nd edition has 44 photos that make it easier to understand what I am describing.  This edition includes solutions to challenges that occur long after formal rehab is over.

There are reports of Amazon listing books as “out of stock” and imposing long delivery times.  You can order this book from the publisher at www.booklocker.com.

Source: Home After a Stroke

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[Abstract] Cognitive motor interference on upper extremity motor performance in a robot-assisted planar reaching task among patients with stroke

Abstract

Objective

To explore motor performance on two different cognitive tasks during robotic rehabilitation in which motor performance was longitudinally assessed.

Design

Prospective study

Setting

Rehabilitation hospital

Participants

Patients with chronic stroke and upper extremity impairment (N=22)

Intervention

A total of 640 repetitions of robot-assisted planar reaching, five times a week for 4 weeks

Main Outcome Measures

Longitudinal robotic evaluations regarding motor performance included smoothness, mean velocity, path error, and reach error by the type of cognitive task. Dual-task effects (DTE) of motor performance were computed in order to analyze the effect of the cognitive task on dual-task interference.

Results

Cognitive task type influenced smoothness (p = 0.006), the DTE of smoothness (p = 0.002), and the DTE of reach error (p = 0.052). Robotic rehabilitation improved smoothness (p = 0.007) and reach error (p = 0.078), while stroke severity affected smoothness (p = 0.01), reach error (p < 0.001), and path error (p = 0.01). Robotic rehabilitation or severity did not affect the DTE of motor performance.

Conclusions

The present results provide evidence for the effect of cognitive-motor interference on upper extremity performance among participants with stroke using a robotic-guided rehabilitation system.

Source: Cognitive motor interference on upper extremity motor performance in a robot-assisted planar reaching task among patients with stroke – Archives of Physical Medicine and Rehabilitation

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[ARTICLE] Improving executive function deficits by playing interactive video-games: secondary analysis of a randomized controlled trial for individuals with chronic stroke

BACKGROUND: Executive function deficits negatively impact independence and participation in everyday life of individuals with chronic stroke. Therefore, it is important to explore therapeutic interventions to improve executive functions.
AIM: The aim of this study was to determine the effectiveness of a 3-month interactive video-game group intervention compared to a traditional motor group intervention for improving executive functions in individuals with chronic stroke.
DESIGN: This study is a secondary analysis of a single-blind randomized controlled trial for improving factors related to physical activity of individuals with chronic stroke. Assessments were administered pre and post the intervention and at 3-month follow-up by assessors blind to treatment allocation.
METHODS: Thirty-nine individuals with chronic stroke with executive function deficits participated in an interactive video-game group intervention (N.=20) or a traditional group intervention (N.=19). The intervention included two 1-hour group sessions per week for three months, either playing video-games or performing traditional exercises/activities. Executive function deficits were assessed using The Trail Making Test (Parts A and B) and by two performance-based assessments; the Bill Paying Task from the Executive Function Performance Test (EFPT) and the Executive Function Route-Finding Task (EFRT).
RESULTS: Following intervention, scores for the Bill Paying Task (EFPT) decreased by 27.5% and 36.6% for the participants in the video-game and traditional intervention, respectively (F=17.3, P<0.000) and continued to decrease in the video-game group with small effect sizes. Effect size was small to medium for the TMT-B (F=0.003, P=0.954) and EFRT (F=1.2, P=0.28), without any statistical significance difference.
CONCLUSIONS: Interactive video-games provide combined cognitive-motor stimulation and therefore have potential to improve executive functioning of individuals with chronic stroke. Further research is needed.
CLINICAL REHABILITATION IMPACT: These findings highlight the potential of utilizing interactive video-games in a small group for keeping these individuals active, while maintaining and improving executive functioning especially for individuals with chronic stroke, who have completed their formal rehabilitation.

Source: Improving executive function deficits by playing interactive video-games: secondary analysis of a randomized controlled trial for individuals with chronic stroke – European Journal of Physical and Rehabilitation Medicine 2016 August;52(4):508-15 – Minerva Medica – Journals

 

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[Poster] Acupuncture as a Treatment to Improve Cognitive Function After Brain Injury: A Case Study

Explore the relationship between acupuncture and cognitive therapy with change in cognitive domains following traumatic brain injury. The secondary objective was to evaluate the potential relationship between acupuncture and cognitive therapy with volume activation in select brain areas as shown by functional MRI (fMRI).

Source: Acupuncture as a Treatment to Improve Cognitive Function After Brain Injury: A Case Study – Archives of Physical Medicine and Rehabilitation

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