Shortened constraint-induced movement therapy in subacute stroke – No effect of using a restraint: A randomized controlled study with independent observers

Absolute and relative intrarater reliability of the modified motor assessment scale according to Uppsala academic hospital -99

BACKGROUND

For some of the most commonly used motor measures, psychometric properties, and minimal detectable change (MDC95) remain largely unknown, limiting the interpretability of tests.

OBJECTIVE

The aim was to establish intrarater reliability, MDC95 and floor- and ceiling effects for a modified version of the Motor Assessment Scale (M-MAS UAS-99).

METHODS

Data was derived from an intervention study that enrolled 41 individuals with chronic stroke. Test scores from two subsequent assessments with 3 weeks apart were used for establishing the floor and ceiling effect, the intraclass correlation coefficient (ICC[2,1]), standard error mean (SEM) and the MDC95 for the total score, and subdomains of the M-MAS UAS-99.

RESULTS

The intrarater reliability was excellent with an ICC[2,1] between 0.970 and 0.995 for both total score and subdomains. The MDC95 for the M-MAS UAS-99 total score was 1.22 which means ≥ 2.0 points on an individual basis. For bed mobility subdomain, a ceiling effect was seen, but not for the total score of the test. No floor effect was seen for the test.

CONCLUSION

M-MAS UAS-99 has excellent intrarater reliability. Any individual increase in test scores must reach 2.0 to be considered a true change.

Unlocking the restraint-Development of a behaviour change intervention to increase the provision of modified constraint-induced movement therapy in stroke rehabilitation

BACKGROUND

Strong evidence supports the provision of modified constraint-induced movement therapy (mCIMT) to improve upper limb function after stroke. A service audit identified that very few patients received mCIMT in a large subacute, early-supported discharge rehabilitation service. A behaviour change intervention was developed to increase the provision of mCIMT following an unsuccessful 'education only' attempt. This paper aims to systematically document the steps undertaken and to provide practical guidance to clinicians and rehabilitation services to implement this complex, yet effective, rehabilitation intervention.

METHODS

This clinician behaviour change intervention was developed over five stages and led by a working group of neurological experts (n = 3). Data collection methods included informal discussions with clinicians and an online survey (n = 35). The staged process included reflection on why the first attempt did not improve the provision of mCIMT (stage 1), mapping barriers and enablers to the Theoretical Domains Framework (TDF) and behaviour change wheel (BCW) to guide the behaviour change techniques (stages 2 and 3), developing a suitable mCIMT protocol (stage 4), and delivering the behaviour change intervention (stage 5).

RESULTS

Reflection among the working group identified the need for upskilling in mCIMT delivery and the use of a behaviour change framework to guide the implementation program. Key determinants of behaviour change operated within the TDF domains of knowledge, skills, environmental context and resources, social role and identity, and social influences. Following the development of a context-specific mCIMT protocol, the BCW guided the behaviour change intervention, which included education, training, persuasion, environmental restructuring, and modelling.

CONCLUSION

This paper provides an example of using the TDF and BCW to support the implementation of mCIMT in a large early-supported discharge service. It outlines the suite of behaviour change techniques used to influence clinician behaviour. The success of this behaviour change intervention will be explored in future research.

Effects of cerebellar transcranial direct current stimulation on upper limb motor function after stroke: study protocol for the pilot of a randomized controlled trial

Background

Transcranial direct current stimulation (tDCS) is a technique that can noninvasively modulate neural states in a targeted brain region. As cerebellar activity levels are associated with upper limb motor improvement after stroke, the cerebellum is a plausible target of tDCS. However, the effect of tDCS remains unclear. Here, we designed a pilot study to assess: (1) the feasibility of a study that aims to examine the effects of cerebellar tDCS combined with an intensive rehabilitation approach based on the concept of constraint-induced movement therapy (CIMT) and (2) the preliminary outcome of the combined approach on upper limb motor function in patients with stroke in the chronic stage.

Methods

This pilot study has a double-blind randomized controlled design. Twenty-four chronic stroke patients with mild to moderate levels of upper limb motor impairment will be randomly assigned to an active or sham tDCS group. The participants will receive 20 min of active or sham tDCS to the contralesional cerebellum at the commencement of 4 h of daily intensive training, repeatedly for 5 days per week for 2 weeks. The primary outcomes are recruitment, enrollment, protocol adherence, and retention rates and measures to evaluate the feasibility of the study. The secondary outcome is upper limb motor function which will be evaluated using the Action Research Arm Test, Fugl-Meyer Assessment, for the upper extremity and the Motor Activity Log. Additionally, neurophysiological and neuroanatomical assessments of the cerebellum will be performed using transcranial magnetic stimulation and magnetic resonance imaging. These assessments will be conducted before, at the middle, and after the 2-week intervention, and finally, 1 month after the intervention. Any adverse events that occur during the study will be recorded.

Discussion

Cerebellar tDCS combined with intensive upper limb training may increase the gains of motor improvement when compared to the sham condition. The present study should provide valuable evidence regarding the feasibility of the design and the efficacy of cerebellar tDCS for upper limb motor function in patients with stroke before a future large trial is conducted.

Trial registration

This study has been registered at the Japan Registry of Clinical Trials (jRCTs042200078). Registered 17 December 2020

Effects of constraint-induced movement therapy for the lower extremity among individuals post-stroke: A randomized controlled clinical trial

BACKGROUND: Stroke often leads to lower extremity impairments that significantly hinders functional recovery. OBJECTIVE: To investigate the effectiveness of constraint-induced movement therapy for the lower extremity (CIMT-LE) for improving balance and ambulation among people post-stroke. METHODS: A randomized controlled, single-blinded clinical trial was conducted. Participants were recruited and randomized into one of two groups: CIMT-LE group and control. Outcome measures were the Fugl-Meyer assessment of lower extremity, Berg balance scale, ten-meter walk test and six-minute walk test. Outcome measures were collected at baseline, following the conclusion of the therapeutic programs and after three months. RESULTS: 38 participants were enrolled in the study (19 in each group). No significant differences were found between groups at baseline. At the conclusion of therapeutic programs, both groups showed significant changes compared to baseline. However, changes seen in the CIMT-LE were clinically significant. Further, at three months following the conclusion of the program, the recorded improvements were retained by participants. CONCLUSION: A CIMT-LE program compared to an intensity-matched conventional program yielded significant clinical improvements among people post-stroke. These improvements were seen in lower extremity motor recovery, postural balance and gait speed. Furthermore, these improvements were retained three months following the conclusion of the therapeutic program.

Predictors of high dose of massed practice following stroke

Objective

The aim of this study is to determine the factors that affect patients' ability to carry out high dose of massed practice.

Methods

Patients with stroke were included in the study if they had no severe impairment in motor and cognitive functions. Dose of massed practice, motor function, perceived amount and quality of use of the arm in the real world, wrist and elbow flexors spasticity, dominant hand stroke, presence of shoulder pain, and central post-stroke pain were assessed on the first day. Dose of massed practice was assessed again on the second day. The data were analyzed using descriptive statistics and linear multiple regression.

Results

Only motor function (β = -0.310, r = 0.787, P < 0.001), perceived amount of use (β = 0.300, r = 0.823; 95% CI = 0.34-107.224, P = 0.049), severity of shoulder pain (β = -0.155, r = -0.472, P = 0.019), wrist flexors spasticity (β = -0.154, r = -0.421, P = 0.002), age (β = -0.129, r = -0.366, P = 0.018), dominant hand stroke (β = -0.091, r = -0.075, P = 0.041), and sex (β = -0.090, r = -0.161, P = 0.036) significantly influenced patients' ability to carry out high dose of massed practice.

Conclusion

Many factors affect patients' ability to carry out high dose of massed practice. Understanding these factors can help in designing appropriate rehabilitation.

Effects of Dual Transcranial Direct Current Stimulation and Modified Constraint-Induced Movement Therapy to Improve Upper-Limb Function after Stroke: A Double-Blinded, Pilot Randomized Controlled Trial

BACKGROUND

Dual transcranial direct current stimulation (dual tDCS) can be combined with stroke rehabilitation interventions to promote excitatory changes in the cerebral cortex.

OBJECTIVE

To investigate how the combined intervention of dual tDCS and modified constraint-induced movement therapy (mCIMT) using both anodal and cathodal stimulation affects on the recovery of upper limb function in chronic stroke patients.

METHODS

This study was a double-blind randomized controlled trial. A total of 30 patients were randomly assigned to the experimental group (dual tDCS and mCIMT) or control group (sham dual tDCS and mCIMT). The experimental and control group performed mCIMT immediately after applying dual tDCS for 20 min, but the control group also performed mCIMT after applying sham tDCS for 20 min in a state where no current flows. The total intervention period was performed 5 times a week for 4 weeks. The outcome was assessed using Fugle-Meyer Assessment (FMA) Motor Activity Log (MAL) Accelerometer.

RESULTS

There was a significant improvement in AOU of MAL and usage of unaffected side in the experimental group compared to the control group, and the experimental group showed more than a small effect difference compared to the control group in the effect size of all evaluations.

CONCLUSIONS

This study has clinical significance in that it presents the possibility of convergence intervention that considers the therapeutic efficiency in clinical practice.

Effects of Lower Limb Constraint Induced Movement Therapy in People With Stroke: A Systematic Review and Meta-Analysis

Background: Constraint induced movement therapy (CIMT) is effective at improving upper limb outcomes after stroke.

Aim: The aim of this study was to carry out a systematic review and meta-analysis of the effects of lower limb CIMT studies of any design in people with stroke.

Materials/ Method: PubMED, PEDro, OTSeeker, CENTRAL, and Web of Science were searched from their earliest dates to February 2021. Lower limbs CIMT studies that measured outcomes at baseline and post-intervention were selected. Sample size, mean, and standard deviation on the outcomes of interest and the protocols of both the experimental and control groups were extracted. McMaster Critical Review Form was used to assess the methodological quality of the studies.

Result: Sixteen studies with different designs were included in this review. The result showed that lower limb CIMT improves functional, physiological and person's reported outcomes including motor function, balance, mobility, gait speed, oxygen uptake, exertion before and after commencement of activities, knee extensor spasticity, weight bearing, lower limb kinematics and quality of life in people with stroke post intervention. However, there were only significant differences in quality of life in favor of CIMT post-intervention [mean difference (MD) = 16.20, 95% CI = 3.30–29.10, p = 0.01]; and at follow-up [mean difference (MD) = 14.10, 95% CI = 2.07–26.13, p = 0.02] between CIMT and the control group. Even for the quality of life, there was significant heterogeneity in the studies post intervention (I² = 84%, p = 0.01).

Conclusion: Lower limb CIMT improves motor function, balance, functional mobility, gait speed, oxygen uptake, weigh bearing, lower limb kinematics, and quality of life. However, it is only superior to the control at improving quality of life after stroke based on the current literature.

Generalizability of Results from Randomized Controlled Trials in Post-Stroke Physiotherapy

Purpose: The randomized controlled trial (RCT) is considered a reliable experimental design, able to detect the effect of an intervention. However, a criticism frequently levelled at RCTs by clinicians is their lack of generalizability. This study aimed to evaluate the generalizability of findings from RCTs of physiotherapy interventions for individuals with stroke. Method: A sample of RCTs of physiotherapy interventions after stroke indexed in the PEDro database was selected, and the reported inclusion and exclusion criteria were analyzed. Results: We reviewed 100 articles, which included 7,366 participants (41.6% women, with a mean weighted age of 65.5 years). The most frequent criteria for exclusion were comorbidity (83%), cognitive impairments (69%), communication skills (55%), recurrent stroke (53%), low functional level (47%) and being elderly (25%). Conclusions: A variety of cohorts of individuals who have had a stroke are excluded from RCTs published in the field of physiotherapy. Because they represent a substantial proportion of the real-world population with stroke, and consequently treated in clinical practice, more vulnerable cohorts of participants should be included in RCTs.

Effect of Modified Constrain Induced Movement Therapy on Fatigue and Motor Performance in Sub Acute Stroke

OBJECTIVES

There is a little available information about the fatigue status among people receiving modified constraint induced movement therapy. The study examined such changes. The effect of using restraint on motor performance was also evaluated in sub acute phase after stroke.

MATERIALS AND METHODS

The study was designed as two group pretest and post-test study. The experimental design included a pretest and post test measures of dependent variables fatigue and motor function. All patients were recruited from the Safdurjung Hospital. 20 patients in subacute phase of stroke (3-9 months), (N = 10) mean age±SD 51.90±15.27, MAS score mean ± SD 1.90±.316 and post stroke duration mean ±SD 6.45±2.26 were included in the experimental group and (N = 10) mean age ± SD 54.10±17.42, MAS score mean ±SD 1.52±0.52 and post stroke duration mean±SD score 4.55± 2.52 were included in the control group. The subjects in the experimental group were restrained for six hours every week day with task training for 2 h per day five times a week for three weeks and the subjects in the controlled group received task training for 2 h per day five times a week for three weeks with no restrain. Motor Performance and fatigue were measured on day to day basis by Wolf Motor Function Test Scores (WMFT) and 11th item of Barrow Neurological Institute (BNI) scale in both experimental and controlled group.

RESULTS

The restraint group exhibited significant better motor performance than the controlled group. Mean difference between Pre- WMFT scores and Post WMFT scores were (0.533±.362) as compared to controlled group (0.192±.23). No significant statistical difference was observed in the difference of mean Pre- BNI and Post - BNI scores in either of the two groups (p = .57). Difference between the experimental and controlled group in motor performance and fatigue scores were nonsignificant.

CONCLUSIONS

Restraint improves motor performance in subacute therapy group and the intensive practice associated with m-CIMT may be administered without the exacerbation of fatigue.

Pragmatic Solutions for Stroke Recovery and Improved Quality of Life in Low- and Middle-Income Countries-A Systematic Review

Background: Given the limited healthcare resources in low and middle income countries (LMICs), effective rehabilitation strategies that can be realistically adopted in such settings are required. Objective: A systematic review of literature was conducted to identify pragmatic solutions and outcomes capable of enhancing stroke recovery and quality of life of stroke survivors for low- and middle- income countries. Methods: PubMed, HINARI, and Directory of Open Access Journals databases were searched for published Randomized Controlled Trials (RCTs) till November 2018. Only completed trials published in English with non-pharmacological interventions on adult stroke survivors were included in the review while published protocols, pilot studies and feasibility analysis of trials were excluded. Obtained data were synthesized thematically and descriptively analyzed. Results: One thousand nine hundred and ninety six studies were identified while 347 (65.22% high quality) RCTs were found to be eligible for the review. The most commonly assessed variables (and outcome measure utility) were activities of daily living [75.79% of the studies, with Barthel Index (37.02%)], motor function [66.57%; with Fugl Meyer scale (71.88%)], and gait [31.12%; with 6 min walk test (38.67%)]. Majority of the innovatively high technology interventions such as robot therapy (95.24%), virtual reality (94.44%), transcranial direct current stimulation (78.95%), transcranial magnetic stimulation (88.0%) and functional electrical stimulation (85.00%) were conducted in high income countries. Several traditional and low-cost interventions such as constraint-induced movement therapy (CIMT), resistant and aerobic exercises (R&AE), task oriented therapy (TOT), body weight supported treadmill training (BWSTT) were reported to significantly contribute to the recovery of motor function, activity, participation, and improvement of quality of life after stroke. Conclusion: Several pragmatic, in terms of affordability, accessibility and utility, stroke rehabilitation solutions, and outcome measures that can be used in resource-limited settings were found to be effective in facilitating and enhancing post-stroke recovery and quality of life.

Neurobiology of Recovery of Motor Function after Stroke: The Central Nervous System Biomarker Effects of Constraint-Induced Movement Therapy

Recovery of motor function after stroke involves many biomarkers. This review attempts to identify the biomarker effects responsible for recovery of motor function following the use of Constraint-Induced Movement Therapy (CIMT) and discuss their implications for research and practice. From the studies reviewed, the biomarker effects identified include improved perfusion of motor areas and brain glucose metabolism; increased expression of proteins, namely, Brain-Derived Neurotrophic Factor (BDNF), Vascular Endothelial Growth Factor (VEGF), and Growth-Associated Protein 43 (GAP-43); and decreased level of Gamma-Aminobutyric Acid (GABA). Others include increased cortical activation, increased motor map size, and decreased interhemispheric inhibition of the ipsilesional hemisphere by the contralesional hemisphere. Interestingly, the biomarker effects correlated well with improved motor function. However, some of the biomarker effects have not yet been investigated in humans, and they require that CIMT starts early on poststroke. In addition, one study seems to suggest the combined use of CIMT with other rehabilitation techniques such as Transcortical Direct Stimulation (tDCs) in patients with chronic stroke to achieve the biomarker effects. Unfortunately, there are few studies in humans that implemented CIMT during early poststroke. Thus, it is important that more studies in humans are carried out to determine the biomarker effects of CIMT especially early on poststroke, when there is a greater opportunity for recovery. Furthermore, it should be noted that these effects are mainly in ischaemic stroke.

Improved quality of life following constraint-induced movement therapy is associated with gains in arm use, but not motor improvement

BACKGROUND

Constraint-induced movement therapy (CI therapy) is one of few treatments for upper extremity (UE) hemiparesis that has been shown to result in motor recovery and improved quality of life in chronic stroke. However, the extent to which treatment-induced improvements in motor function versus daily use of the more affected arm independently contribute to improved quality of life remains largely unexplored.

OBJECTIVE

The objective of this study is to identify whether motor function or daily use of a hemiparetic arm has a greater influence on quality of life after CI therapy.

METHODS

Two cohorts of participants with chronic stroke received either in-person CI therapy (n = 29) or video-game home-based CI therapy (n = 16). The two cohorts were combined and the motor-related outcomes (Wolf Motor Function Test, Action Research Arm Test, Motor Activity Log [MAL]) and quality of life (Stroke-Specific Quality of Life) were jointly modeled to assess the associations between outcomes.

RESULTS

The only outcome associated with improved quality of life was the MAL. Improvements in quality of life were not restricted to motor domains, but generalized to psychosocial domains as well.

CONCLUSIONS

Results suggest that improved arm use during everyday activities is integral to maximizing quality of life gains during motor rehabilitation for chronic post-stroke UE hemiparesis. In contrast, gains in motor function were not associated with increases in quality of life. These findings further support the need to implement techniques into clinical practice that promote arm use during daily life if improving quality of life is a main goal of treatment. ClinicalTrials.gov Registration Numbers: NCT01725919 and NCT03005457.

Neurophysiological effects of constraint-induced movement therapy and motor function: A systematic review

Background/Aims:

There is a claim that improvements in motor function in people with stroke following constraint-induced movement therapy (CIMT) is due to compensation but not actually neurorestoration. However, few studies have demonstrated improvements in neurophysiological outcomes such as increased motor map size and activation of primary cortex, or their positive correlations with motor function, following CIMT. The aim of this study was to carry out a systematic review of CIMT trials using neurophysiological outcomes, and a meta-analysis of the relationship between the neurophysiological outcomes and motor function.

Methods:

The PubMed, PEDro and CENTRAL databases, as well as the reference lists of the included studies, were searched. The included studies were randomised controlled trials comparing the effect of CIMT on neurophysiological outcomes compared with other rehabilitation techniques, conventional therapy, or another variant of CIMT. Methodological quality was assessed using the PEDro scale. The data extracted from the studies were sample size, eligibility criteria, dose of intervention and control, outcome measurements, and time since stroke.

Findings:

A total of 10 articles (n=219) fulfilled the study inclusion criteria, all of which were used for narrative synthesis, and four studies were used in the meta-analysis. The methodological quality of the studies ranged from low to high. Strong, positive, and significant correlations were found between the neurophysiological and motor function outcomes in fixed effects (z=3.268, p=0.001; r=0.52, 95% confidence interval (CI) 0.227–0.994) and random-effects (z=2.106, p=0.035; r=0.54, 95% CI 0.0424–0.827) models.

Conclusions:

Randomised controlled trials evaluating the effects of CIMT on neurophysiological outcomes are few in number. Additionally, these studies used diverse outcomes, which makes it difficult to draw any meaningful conclusion. However, there is a strong positive correlation between neurophysiological and motor function outcomes in these studies.

In-Home Delivery of Constraint-Induced Movement Therapy via Virtual Reality Gaming

Purpose

People with chronic hemiparesis are frequently dissatisfied with the recovery of their hand and arm, yet many lack access to effective treatments. Constraint-induced movement therapy (CI therapy) effectively increases arm function and spontaneous use in persons with chronic hemiparesis. The purpose of this study was to determine the feasibility and measure safety and outcomes of an in-home model of delivering CI therapy using a custom, avatar-based virtual reality game.

Methods

Seventeen individuals with chronic hemiparesis participated in this pretest/posttest quasi-experimental design study. The 10-day intervention had three components: 1) high-repetition motor practice using virtual reality gaming; 2) constraint of the stronger arm via a padded restraint mitt; and 3) a transfer package to reinforce arm use. Feasibility of the intervention was evaluated through comparison to traditional CI therapy and through participants' subjective responses. The primary outcome measures were the Wolf Motor Function Test (WMFT) and the Motor Activity Log quality of movement scale (MAL-QOM).

Results

On average, participants completed 17.2 ± 8 hours and 19,436 repetitions of motor practice. No adverse events were reported. Of 7 feasibility criteria, 4 were met. WMFT rate and MAL-QOM increased, with effect size (Cohen's d) of 1.5 and 1.1, respectively.

Conclusions

This model of delivering CI therapy using a custom, avatar-based virtual reality game was feasible, well received, and showed preliminary evidence of being a safe intervention to use in the home for persons with chronic hemiparesis.

Video Game Rehabilitation for Outpatient Stroke (VIGoROUS): protocol for a multi-center comparative effectiveness trial of in-home gamified constraint-induced movement therapy for rehabilitation of chronic upper extremity hemiparesis

Background

Constraint-Induced Movement therapy (CI therapy) is shown to reduce disability, increase use of the more affected arm/hand, and promote brain plasticity for individuals with upper extremity hemiparesis post-stroke. Randomized controlled trials consistently demonstrate that CI therapy is superior to other rehabilitation paradigms, yet it is available to only a small minority of the estimated 1.2 million chronic stroke survivors with upper extremity disability. The current study aims to establish the comparative effectiveness of a novel, patient-centered approach to rehabilitation utilizing newly developed, inexpensive, and commercially available gaming technology to disseminate CI therapy to underserved individuals. Video game delivery of CI therapy will be compared against traditional clinic-based CI therapy and standard upper extremity rehabilitation. Additionally, individual factors that differentially influence response to one treatment versus another will be examined.

Methods

This protocol outlines a multi-site, randomized controlled trial with parallel group design. Two hundred twenty four adults with chronic hemiparesis post-stroke will be recruited at four sites. Participants are randomized to one of four study groups: (1) traditional clinic-based CI therapy, (2) therapist-as-consultant video game CI therapy, (3) therapist-as-consultant video game CI therapy with additional therapist contact via telerehabilitation/video consultation, and (4) standard upper extremity rehabilitation. After 6-month follow-up, individuals assigned to the standard upper extremity rehabilitation condition crossover to stand-alone video game CI therapy preceded by a therapist consultation. All interventions are delivered over a period of three weeks. Primary outcome measures include motor improvement as measured by the Wolf Motor Function Test (WMFT), quality of arm use for daily activities as measured by Motor Activity Log (MAL), and quality of life as measured by the Quality of Life in Neurological Disorders (NeuroQOL).

Discussion

This multi-site RCT is designed to determine comparative effectiveness of in-home technology-based delivery of CI therapy versus standard upper extremity rehabilitation and in-clinic CI therapy. The study design also enables evaluation of the effect of therapist contact time on treatment outcomes within a therapist-as-consultant model of gaming and technology-based rehabilitation.

Trial registration

Clinicaltrials.gov, NCT02631850.

Constraint-induced movement therapy as a rehabilitation intervention for upper extremity in stroke patients: systematic review and meta-analysis

Constraint-induced movement therapy (CIMT) is a neurorehabilitation technique designed to improve upper extremity motor functions after stroke. This review aimed to investigate evidence of the effect of CIMT on upper extremity in stroke patients and to identify optimal methods to apply CIMT. Four databases (MEDLINE, EMBASE, CINHAL, and PEDro) and reference lists of relevant articles and reviews were searched. Randomized clinical trials that studied the effect of CIMT on upper extremity outcomes in stroke patients compared with other rehabilitative techniques, usual care, or no intervention were included. Methodological quality was assessed using the PEDro score. The following data were extracted for each trial: patients' characteristics, sample size, eligibility criteria, protocols of CIMT and control groups, outcome measurements, and the PEDro score. A total of 38 trials were identified according to the inclusion criteria. The trials included were heterogeneous in CIMT protocols, time since stroke, and duration and frequency of treatment. The pooled meta-analysis of 36 trials found a heterogeneous significant effect of CIMT on upper extremity. There was no significant effect of CIMT at different durations of follow-up. The majority of included articles did not fulfill powered sample size and quality criteria. The effect of CIMT changed in terms of sample size and quality features of the articles included. These meta-analysis findings indicate that evidence for the superiority of CIMT in comparison with other rehabilitative interventions is weak. Information on the optimal dose of CIMT and optimal time to start CIMT is still limited.

Constraint-Induced Aphasia Therapy in the Acute Stage

Background. Constraint-induced aphasia therapy (CIAT) has proven effective in patients with subacute and chronic forms of aphasia. It has remained unclear, however, whether intensity of therapy or constraint is the relevant factor. Data about intensive speech and language therapy (SLT) are conflicting. Objective. To identify the effective component of CIAT and assess the feasibility of SLT in the acute stage after stroke. Method. A total of 60 patients with aphasia (68.2 ± 11.7 years) were enrolled 18.9 days after first-ever stroke. They were randomly distributed into 3 groups: (1) CIAT group receiving therapy for 3 hours per day (10 workdays, total 30 hours); (2) conventional communication treatment group, with same intensity without constraints; and (3) control group receiving individual therapy twice a day as well as group therapy (total 14 hours). Patients were assessed pretreatment and posttreatment using the Aachener Aphasia Test (primary end point: token test) and the Communicative Activity Log (CAL). Results. Pretreatment, there were no between-group differences. Posttreatment, all groups showed significant improvements without between-group differences. Conclusion. It was found that 14 hours of aphasia therapy administered within 2 weeks as individual therapy, focusing on individual deficits, combined with group sessions has proven to be most efficient. This approach yielded the same outcome as 30 hours of group therapy, either in the form of CIAT or group therapy without constraints. SLT in an intensive treatment schedule is feasible and was well tolerated in the acute stage after stroke.

Constraint-induced movement therapy for upper extremities in people with stroke

BACKGROUND

In people who have had a stroke, upper limb paresis affects many activities of daily life. Reducing disability is therefore a major aim of rehabilitative interventions. Despite preserving or recovering movement ability after stroke, sometimes people do not fully realise this ability in their everyday activities. Constraint-induced movement therapy (CIMT) is an approach to stroke rehabilitation that involves the forced use and massed practice of the affected arm by restraining the unaffected arm. This has been proposed as a useful tool for recovering abilities in everyday activities.

OBJECTIVES

To assess the efficacy of CIMT, modified CIMT (mCIMT), or forced use (FU) for arm management in people with hemiparesis after stroke.

SEARCH METHODS

We searched the Cochrane Stroke Group trials register (last searched June 2015), the Cochrane Central Register of Controlled Trials (CENTRAL; The Cochrane Library Issue 1, 2015), MEDLINE (1966 to January 2015), EMBASE (1980 to January 2015), CINAHL (1982 to January 2015), and the Physiotherapy Evidence Database (PEDro; January 2015).

SELECTION CRITERIA

Randomised control trials (RCTs) and quasi-RCTs comparing CIMT, mCIMT or FU with other rehabilitative techniques, or none.

DATA COLLECTION AND ANALYSIS

One author identified trials from the results of the electronic searches according to the inclusion and exclusion criteria, three review authors independently assessed methodological quality and risk of bias, and extracted data. The primary outcome was disability.

MAIN RESULTS

We included 42 studies involving 1453 participants. The trials included participants who had some residual motor power of the paretic arm, the potential for further motor recovery and with limited pain or spasticity, but tended to use the limb little, if at all. The majority of studies were underpowered (median number of included participants was 29) and we cannot rule out small-trial bias. Eleven trials (344 participants) assessed disability immediately after the intervention, indicating a non-significant standard mean difference (SMD) 0.24 (95% confidence interval (CI) -0.05 to 0.52) favouring CIMT compared with conventional treatment. For the most frequently reported outcome, arm motor function (28 studies involving 858 participants), the SMD was 0.34 (95% CI 0.12 to 0.55) showing a significant effect (P value 0.004) in favour of CIMT. Three studies involving 125 participants explored disability after a few months of follow-up and found no significant difference, SMD -0.20 (95% CI -0.57 to 0.16) in favour of conventional treatment.

AUTHORS' CONCLUSIONS

CIMT is a multi-faceted intervention where restriction of the less affected limb is accompanied by increased exercise tailored to the person's capacity. We found that CIMT was associated with limited improvements in motor impairment and motor function, but that these benefits did not convincingly reduce disability. This differs from the result of our previous meta-analysis where there was a suggestion that CIMT might be superior to traditional rehabilitation. Information about the long-term effects of CIMT is scarce. Further trials studying the relationship between participant characteristics and improved outcomes are required.

Constraint-induced movement therapy after stroke

Constraint-induced movement therapy (CIMT) was developed to overcome upper limb impairments after stroke and is the most investigated intervention for the rehabilitation of patients. Original CIMT includes constraining of the non-paretic arm and task-oriented training. Modified versions also apply constraining of the non-paretic arm, but not as intensive as original CIMT. Behavioural strategies are mostly absent for both modified and original CIMT. With forced use therapy, only constraining of the non-paretic arm is applied. The original and modified types of CIMT have beneficial effects on motor function, arm-hand activities, and self-reported arm-hand functioning in daily life, immediately after treatment and at long-term follow-up, whereas there is no evidence for the efficacy of constraint alone (as used in forced use therapy). The type of CIMT, timing, or intensity of practice do not seem to affect patient outcomes. Although the underlying mechanisms that drive modified and original CIMT are still poorly understood, findings from kinematic studies suggest that improvements are mainly based on adaptations through learning to optimise the use of intact end-effectors in patients with some voluntary motor control of wrist and finger extensors after stroke.

Emerging treatments for motor rehabilitation after stroke

Although numerous treatments are available to improve cerebral perfusion after acute stroke and prevent recurrent stroke, few rehabilitation treatments have been conclusively shown to improve neurologic recovery. The majority of stroke survivors with motor impairment do not recover to their functional baseline, and there remains a need for novel neurorehabilitation treatments to minimize long-term disability, maximize quality of life, and optimize psychosocial outcomes. In recent years, several novel therapies have emerged to restore motor function after stroke, and additional investigational treatments have also shown promise. Here, we familiarize the neurohospitalist with emerging treatments for poststroke motor rehabilitation. The rehabilitation treatments covered in this review will include selective serotonin reuptake inhibitor medications, constraint-induced movement therapy, noninvasive brain stimulation, mirror therapy, and motor imagery or mental practice.

Constraint-induced movement therapy: trial sequential analysis applied to Cochrane collaboration systematic review results

BACKGROUND

Trial sequential analysis (TSA) may establish when firm evidence about the efficacy of interventions is reached in a cumulative meta-analysis, combining a required information size with adjusted thresholds for conservative statistical significance. Our aim was to demonstrate TSA results on randomized controlled trials (RCTs) included in a Cochrane systematic review on the effectiveness of constraint-induced movement therapy (CIMT) for stroke patients.

METHODS

We extracted data on the functional independence measure (FIM) and the action research arm test (ARAT) from RCTs that compared CIMT versus other rehabilitative techniques. Mean differences (MD) were analyzed using a random-effects model. We calculated the information size and the cumulative Z-statistic, applying the O'Brien-Fleming monitoring boundaries.

RESULTS

We included data from 14 RCTs. In the conventional meta-analysis (seven trials, 233 patients), the effect of CIMT on FIM was reported as significant (MD 2.88, 95% CI 0.08 to 5.68; P = 0.04). The diversity-adjusted required information size was 142 patients, and the cumulative Z-score did not cross the trial sequential monitoring boundary for benefit (adjusted 95% CI -0.02 to 5.78). The effect of CIMT on ARAT (nine trials, 199 patients) was reported as significant (MD 7.78, 95% CI 1.19 to 14.37; P = 0.02). However, the diversity-adjusted required information size was 252 patients, and the Z-score did not cross the trial sequential monitoring boundary for benefit (adjusted 95% CI -0.06 to 15.62).

CONCLUSIONS

Although conventional meta-analyses of CIMT reached statistical significance, their overall results remain inconclusive and might be spurious. Researchers should not be overconfident on CIMT efficacy based on the results of meta-analyses and derived recommendations.

Modified constraint-induced therapy for the lower extremity in elderly persons with chronic stroke: single-subject experimental design study

BACKGROUND

Studies have demonstrated improvements in arm motor function after constraint-induced (CI) therapy. Few studies of CI therapy for lower extremity conditions have been done. Our purpose was to evaluate the effect of modified CI therapy for the lower extremity in terms of motor control in elderly persons with chronic stroke.

METHOD

A single-subject experimental AB design was used, with 3 months of follow-up. The A phase consisted of a baseline period of 2 weeks with 6 measurements, and the B phase was a 4-week intervention with 8 measurements. Two men and 1 woman were included. The intervention consisted of intensive rehabilitation of the affected leg for 2 hours each weekday. A whole-leg orthosis was used to immobilize the nonaffected leg. The following tests were conducted: a step test for dynamic balance, Fugl-Meyer assessment for lower-extremity motor function, the Timed Up and Go test for mobility, and the 6-minute and 10-meter walk tests for walking ability. Statistical significance was analyzed by using Shewhart charts with a 2-standard deviation band method.

RESULTS

A positive change was observed in 14 of 18 variables. Significant improvements existed in 7 of the 14 positively changed variables. Positive changes remained in 13 of 14 variables at the 3-month follow-up evaluation.

CONCLUSION

Modified CI therapy may result in positive changes in balance and motor function in elderly persons with chronic stroke.

What is the evidence for physical therapy poststroke? A systematic review and meta-analysis

BACKGROUND

Physical therapy (PT) is one of the key disciplines in interdisciplinary stroke rehabilitation. The aim of this systematic review was to provide an update of the evidence for stroke rehabilitation interventions in the domain of PT.

METHODS AND FINDINGS

Randomized controlled trials (RCTs) regarding PT in stroke rehabilitation were retrieved through a systematic search. Outcomes were classified according to the ICF. RCTs with a low risk of bias were quantitatively analyzed. Differences between phases poststroke were explored in subgroup analyses. A best evidence synthesis was performed for neurological treatment approaches. The search yielded 467 RCTs (N = 25373; median PEDro score 6 [IQR 5-7]), identifying 53 interventions. No adverse events were reported. Strong evidence was found for significant positive effects of 13 interventions related to gait, 11 interventions related to arm-hand activities, 1 intervention for ADL, and 3 interventions for physical fitness. Summary Effect Sizes (SESs) ranged from 0.17 (95%CI 0.03-0.70; I(2) = 0%) for therapeutic positioning of the paretic arm to 2.47 (95%CI 0.84-4.11; I(2) = 77%) for training of sitting balance. There is strong evidence that a higher dose of practice is better, with SESs ranging from 0.21 (95%CI 0.02-0.39; I(2) = 6%) for motor function of the paretic arm to 0.61 (95%CI 0.41-0.82; I(2) = 41%) for muscle strength of the paretic leg. Subgroup analyses yielded significant differences with respect to timing poststroke for 10 interventions. Neurological treatment approaches to training of body functions and activities showed equal or unfavorable effects when compared to other training interventions. Main limitations of the present review are not using individual patient data for meta-analyses and absence of correction for multiple testing.

CONCLUSIONS

There is strong evidence for PT interventions favoring intensive high repetitive task-oriented and task-specific training in all phases poststroke. Effects are mostly restricted to the actually trained functions and activities. Suggestions for prioritizing PT stroke research are given.

The effect of altering a single component of a rehabilitation programme on the functional recovery of stroke patients: a systematic review and meta-analysis

OBJECTIVE

To evaluate the effect of altering a single component of a rehabilitation programme (e.g. adding bilateral practice alone) on functional recovery after stroke, defined using a measure of activity.

DATA SOURCES

A search was conducted of Medline/Pubmed, CINAHL and Web of Science.

REVIEW METHODS

Two reviewers independently assessed eligibility. Randomized controlled trials were included if all participants received the same base intervention, and the experimental group experienced alteration of a single component of the training programme. This could be manipulation of an intrinsic component of training (e.g. intensity) or the addition of a discretionary component (e.g. augmented feedback). One reviewer extracted the data and another independently checked a subsample (20%). Quality was appraised according to the PEDro scale.

RESULTS

Thirty-six studies (n = 1724 participants) were included. These evaluated nine training components: mechanical degrees of freedom, intensity of practice, load, practice schedule, augmented feedback, bilateral movements, constraint of the unimpaired limb, mental practice and mirrored-visual feedback. Manipulation of the mechanical degrees of freedom of the trunk during reaching and the addition of mental practice during upper limb training were the only single components found to independently enhance recovery of function after stroke.

CONCLUSION

This review provides limited evidence to support the supposition that altering a single component of a rehabilitation programme realises greater functional recovery for stroke survivors. Further investigations are required to determine the most effective single components of rehabilitation programmes, and the combinations that may enhance functional recovery.

Exploring the efficacy of constraint in animal models of stroke: meta-analysis and systematic review of the current evidence

BACKGROUND

Constraint-induced movement therapy (CIMT) is used to counteract learned nonuse observed following stroke in humans and has been shown to improve function. Variations of CIMT used in animal models of stroke have the potential to inform and improve our understanding of this intervention.

OBJECTIVE

To conduct a systematic review of studies investigating constraint in experimental stroke. The authors aimed to assess the quality and establish the efficacy of constraint on neurobehavior, cognitive function, infarct size, and stress and mortality and to determine the optimal dose or time to administration.

METHODS

Systematic review with meta-analysis was used. Data were analyzed using DerSimonian and Laird weighted-mean-difference random effects meta-analysis.

RESULTS

The quality scores of the 8 articles (15 studies) included were moderate (median 5/10; interquartile range, 4.8-6.0). There was a trend for animals with constraint to have worse neurobehavioral scores (-10% worse; 95% confidence interval [CI] = -20 to 0; P = .06). Infarct volumes were not significantly different between groups (-3% larger with constraint; 95% CI = -15 to 9; P = .63). Cognitive function was significantly better after constraint, although this estimate was based on only 28 animals from 2 studies. Insufficient data prevented analysis of the effect of constraint on stress and mortality.

CONCLUSIONS

This meta-analysis showed no benefit of constraint on neurobehavioral scores, which is at odds with some human studies. Animal models may help us efficiently explore the biological basis of rehabilitation interventions; however, review of the data in this study raise uncertainty about its effectiveness in humans.

The EXCITE Trial: analysis of "noncompleted" Wolf Motor Function Test items

OBJECTIVE

This is the first study to examine Wolf Motor Function Test (WMFT) tasks among EXCITE Trial participants that could not be completed at baseline or 2 weeks later.

METHODS

Data were collected from participants who received constraint-induced movement therapy (CIMT) immediately at the time of randomization (CIMT-I, n = 106) and from those for whom there was a delay of 1 year in receiving this intervention (CIMT-D, n = 116). Data were collected at baseline and at a 2-week time point, during which the CIMT-I group received the CIMT intervention and the CIMT-D group did not. Generalized estimating equation (GEE) analyses were used to examine repeated binary data and count values. Group and visit interactions were assessed, adjusting for functional level, affected side, dominant side, age, and gender covariates.

RESULTS

In CIMT-I participants, there was an increase in the proportion of completed tasks at posttest compared with CIMT-D participants, particularly with respect to those tasks requiring dexterity with small objects and total incompletes (P < .0033). Compared with baseline, 120 tasks governing distal limb use for CIMT-I and 58 tasks dispersed across the WMFT for CIMT-D could be completed after 2 weeks. Common movement components that may have contributed to incomplete tasks include shoulder stabilization and flexion, elbow flexion and extension, wrist pronation, supination and ulnar deviation, and pincer grip.

CONCLUSION

CIMT training should emphasize therapy for those specific movement components in patients who meet the EXCITE criteria for baseline motor control.

Effectiveness of constraint-induced movement therapy on activity and participation after stroke: a systematic review and meta-analysis of randomized controlled trials

Objective: To examine the effect of constraint-induced movement therapy and modified constraint-induced movement therapy on activity and participation of patients with stroke (i.e. the effect of different treatment durations and frequency) by reviewing the results of randomized controlled trials.

Data sources: A systematic literature search was conducted in MEDLINE, CINAHL, EMBASE, PEDro, OTSeeker, CENTRAL and by manual search.

Review methods: Randomized controlled trials for patients over 18 years old with stroke and published in Finnish, Swedish, English or German were included. Studies were collected up to the first week in May 2011. The evidence was high, moderate, low or no evidence according to the quality of randomized controlled trial and the results of meta-analyses.

Results: Search resulted in 30 papers reporting constraint-induced movement therapy, including 27 randomized controlled trials published between 2001 and 2011. Constraint-induced movement therapy practice for 60–72 hours over two weeks produced better mobility (i.e. ability to carry, move and handle objects) with high evidence compared to control treatment. Constraint-induced movement therapy for 20–56 hours over two weeks, 30 hours over three weeks and 15–30 hours over 10 weeks improved mobility of the affected upper extremity. However, with self-care as an outcome measure, only 30 hours of constraint-induced movement therapy practice over three weeks demonstrated an improvement.

Conclusion: Constraint-induced movement therapy and modified constraint-induced movement therapy proved to be effective on affected hand mobility and to some extent self-care on the World Health Organization’s International Classification of Functioning, Disability and Health activity and participation component, but further studies are needed to find out the optimal treatment protocols for constraint-induced movement therapy.

Minimal forced use without constraint stimulates spontaneous use of the impaired upper extremity following motor cortex injury

The purpose of this study was to determine if recovery of neurologically impaired hand function following isolated motor cortex injury would occur without constraint of the non-impaired limb, and without daily forced use of the impaired limb. Nine monkeys (Macaca mulatta) received neurosurgical lesions of various extents to arm representations of motor cortex in the hemisphere contralateral to the preferred hand. After the lesion, no physical constraints were placed on the ipsilesional arm/hand and motor testing was carried out weekly with a maximum of 40 attempts in two fine motor tasks that required use of the contralesional hand for successful food acquisition. These motor tests were the only "forced use" of the contralesional hand. We also tested regularly for spontaneous use of the contralesional hand in a fine motor task in which either hand could be used for successful performance. This minimal intervention was sufficient to induce recovery of the contralesional hand to such a functional level that eight of the monkeys chose to use that hand on some trials when either hand could be used. Percentage use of the contralesional hand (in the task when either hand could be used) varied considerably among monkeys and was not related to lesion volume or recovery of motor skill. These data demonstrate a remarkable capacity for recovery of spontaneous use of the impaired hand following localized frontal lobe lesions. Clinically, these observations underscore the importance of therapeutic intervention to inhibit the induction of the learned nonuse phenomenon after neurological injury.

Effects of forced use on arm function in the subacute phase after stroke: a randomized, clinical pilot study

BACKGROUND AND OBJECTIVE

Following stroke, it is common to exhibit motor impairments and decreased use of the upper limb. The objective of the present study was to evaluate forced use on arm function during the subacute phase after stroke.

DESIGN

A comparison of standard rehabilitation only and standard rehabilitation together with a restraining sling was made through a randomized, nonblinded, clinical pilot trial with assessments before intervention, after intervention, and at 1- and 3-month follow-ups.

SETTING

The present study took place at the departments of rehabilitation medicine, geriatrics, and neurology at a university hospital.

PARTICIPANTS

A convenience sample of 30 people 1 to 6 months (mean, 2.4 mo) after stroke was randomized into 2 groups (forced-use group and standard training group) of 15 people each. Twenty-six participants completed the 3-month follow-up.

INTERVENTION

All participants received their standard rehabilitation program with training 5 days per week for 2 weeks as inpatients or outpatients. The forced-use group also wore a restraining sling on the nonparetic arm with a target of 6 hours per day.

MEASUREMENTS

The Fugl-Meyer (FM) test, the Action Research Arm Test, the Motor Assessment Scale (MAS) (sum of scores for the upper limb), a 16-hole peg test (16HPT), a grip strength ratio (paretic hand to nonparetic hand), and the Modified Ashworth Scale were used to obtain measurements.

RESULTS

The changes in the forced-use group did not differ from the changes in the standard training group for any of the outcome measures. Both groups improved over time, with statistically significant changes in the FM test (mean score changed from 52 to 57), MAS (mean score changed from 10.1 to 12.4), 16HPT (mean time changed from >92 seconds to 60 seconds), and grip strength ratio (mean changed from 0.40 to 0.55).

LIMITATIONS

The limitations of this pilot study include an extended study time, a nonblinded assessor, a lack of control of treatment content, and a small sample size.

CONCLUSIONS

The results of the present pilot study did not support forced use as a reinforcement of standard rehabilitation in the subacute phase after stroke. Forced use did not generate greater improvements with regard to motor impairment and capacity than standard rehabilitation alone. The findings of this effectiveness study will be used to help design future clinical trials with the aim of revealing a definitive conclusion regarding the clinical implementation of forced use for upper-limb rehabilitation.