‘Factors contributing to upper limb recovery after stroke: A survey of stroke survivors in Queensland Australia’

The feasibility of the adapted H-GRASP program for perceived and actual daily-life upper limb activity in the chronic phase post-stroke

(Purpose: Assessing feasibility and initial impact of the Home-Graded Repetitive Arm Supplementary Program combined with in-home accelerometer-based feedback (AH-GRASP) on perceived and actual daily-life upper limb (UL) activity in stroke survivors during the chronic phase with good UL motor function but low perceived daily-life activity. Material and methods: A 4-week intervention program (4 contact hours, 48 h self-practice) encompassing task-oriented training, behavioral techniques, phone-based support, monitoring, and weekly feedback sessions using wrist-worn accelerometery was implemented using a pre-post double baseline repeated measures design. Feasibility, clinical assessments, patient-reported outcomes, and accelerometer data were investigated. Results: Of the 34 individuals approached, nineteen were included (recruitment rate 56%). Two dropped out, one due to increased UL pain (retention rate 89%). Seven (41%) achieved the prescribed exercise target (120 min/day, six days/week). Positive patient experiences and improvements in UL capacity, self-efficacy, and contribution of the affected UL to overall activity (p < 0.05, small to large effect sizes) were observed. Additionally, seven participants (41%) surpassed the minimal clinically important difference in perceived UL activity.Conclusions: A home-based UL exercise program with accelerometer-based feedback holds promise for enhancing perceived and actual daily-life UL activity for our subgroup of chronic stroke survivors.

Comparison of Upper Extremity Function and Daily Use in Individuals with and without Post Stroke Depression

BACKGROUND

Post-stroke depression (PSD) is a frequent psychiatric complication, however very few studies have investigated its relation to the affected upper extremity (UE) post-stroke. Objective. To compare the affected UE in terms of motor impairment, functional ability, and daily-use in individuals with and without PSD during the first 6 months post-stroke.

METHODS

This study analyzed data from a previous cohort; participants were assessed at rehabilitation admission (T1), 6 weeks (T2), and 6 months (T3) post-stroke. At each time point we compared between participants with and without PSD (Geriatric Depression Scale score ≥ 5). The Fugl-Meyer Motor Assessment assessed motor impairment, Action Research Arm Test assessed functional ability, and the Rating of Everyday Arm-Use in the Community and Home assessed daily-use. Independence in daily activities and cognition were also assessed.

RESULTS

A total of 116 participants were recruited, 38% had PSD at T1. No significant differences were found between groups at T1 and T2. However, significant differences (z = -5.23 to -2.66, p < .01) were found between groups for all UE measures at T3; participants with PSD had lower motor and functional ability and less daily hand-use than participants without PSD. At T3 participants with PSD were also less independent in daily-living.

CONCLUSIONS

PSD is associated with greater UE motor, functional, and daily-use disability at 6 months post-stroke. Our findings underscore the negative impact of PSD on UE during the crucial transition period when individuals return home and integrate back into the community. Further research is needed to delineate the effect of change in PSD status on UE outcomes post stroke.

Stroke survivors' views on their priorities for upper-limb recovery and the availability of therapy services after stroke: a longitudinal, phenomenological study

PURPOSE

Forty percent of stroke survivors have a persistent lack of function in the upper limb, causing significant disability. Most personal-care tasks and meaningful activities require bi-manual function of both upper limbs. However, lower-limb mobility is often viewed as the priority in stroke services. Perspectives of stroke survivors on priorities for upper-limb recovery and therapy have not been investigated in detail. Therefore, this study aimed to explore their views.

MATERIALS AND METHODS

Thirteen stroke survivors each engaged in up to four semi-structured interviews over 18 months. A phenomenological approach guided the research.

RESULTS

Three themes were identified. Priorities change on coming home: recovery of walking is a priority early after stroke but upper-limb recovery becomes equally important over time, particularly once living at home. Limited therapy services: therapy has a short duration, prioritizes lower-limb mobility, and is short-lived in the community; people feel abandoned by services. Active partners in recovery: stroke survivors want intermittent access to review and advice so they can be active partners with therapists to manage their upper-limb recovery.

CONCLUSION

Therapy services should recognize stroke survivors' changing priorities and work with them as active partners in upper-limb recovery. Intermittent access to review and advice should be included in service design.Implications for rehabilitationStroke survivors' priorities may change over time from recovery of walking toward upper-limb recovery.Post-stroke services can be perceived as insufficient to meet the needs of stroke survivors who want to participate actively in rehabilitation of their upper limb.Stroke survivors may prefer services that are more flexible to provide regular review of their progress, access to guidance and support to self-manage their recovery.

Shoulder complex and trunk coordination of individuals with severe hemiparesis following a constraint-induced movement therapy protocol: A case series

INTRODUCTION

Constraint Induced Movement Therapy (CIMT) has been shown to be an effective rehabilitation technique in individuals with mild and moderate upper limb (UL) hemiparesis. The aim was to evaluate the effect the CIMT for improving paretic UL use and interjoint coordination with individuals in severe hemiparesis.

METHODS

Six individuals with severe chronic hemiparesis (mean age = 55 ± 16 years) received a UL CIMT intervention for 2 weeks. UL clinical assessments were conducted five times: two assessments at pre-intervention and then, one assessment at post-intervention and 1- and 3-month follow-up using the Graded Motor Activity Log GMAL) and the Graded Wolf Motor Function Test (GWMFT). Scapula, humerus and trunk coordination variability were assessed using the 3-D kinematics during arm elevation, combing hair, turning on the switch and grasp a washcloth. A paired t-test was used to check differences between coordination variability and a one-way ANOVA repeated measures was used to check differences between GMAL and GWMFT scores.

RESULTS

There were no differences in GMAL and GWMFT between the patient screening and the baseline data collection (p > 0.05). GMAL scores increased at post-intervention and at follow-ups (p < 0.02). GWMFT performance time score decreased at post-intervention and at 1-month follow-up (p < 0.04). Improvements in kinematic variability of the paretic UL at pre and post-intervention were observed in all tasks, except in the activity of turn on the light switch.

CONCLUSION

Following the CIMT protocol, improvements in GMAL and GWMFT scores may reflect improvements in paretic UL performance, in real-life environment. Improvements in kinematic variability may reflect an improving of UL interjoint coordination for individuals with chronic severe hemiparesis.

Improved upper extremity function following low-frequency hybrid assistive neuromuscular dynamic stimulation therapy in a patient with hemiplegia: A case report

BACKGROUND

Although hybrid assistive neuromuscular dynamic stimulation (HANDS) therapy may improve upper extremity functionality in patients with paralysis or paresis due to stroke, it is usually only provided in hospitals as a frequent intervention during the phase of early recovery in stroke. Home-based rehabilitation is limited by frequency and duration of visits.

PURPOSE

To investigate the effectiveness of low-frequency HANDS therapy using motor function assessment.

STUDY DESIGN

Case report.

METHODS

We performed HANDS therapy for 1 month on the patient, who was a woman in her 70s with left-sided hemiplegia. It was initiated on day 183 post the onset of stroke. Movement and motor function were evaluated using the Fugl-Meyer Assessment upper-extremity (FMA-UE) motor items and the Motor Activity Log consisting of Amount of Use (MAL-AOU), as well as Quality of Movement (MAL-QOM) scales. This evaluation was performed before starting HANDS therapy and after its conclusion.

RESULTS

Following HANDS therapy, there was improvement in the FMA-UE (21 points → 28 points), MAL-AOU (0.17 points → 0.33 points), and MAL-QOM (0.08 points → 0.33 points) scores when compared to the scores before therapy, and the patient was able to use both hands for activities of daily living (ADLs).

CONCLUSIONS

Low-frequency HANDS therapy combined with encouragement to include the affected hand in ADLs may improve upper extremity function in cases of paralysis.

Protocol for a remote home-based upper extremity self-training program for community-dwelling individuals after stroke

Background

Half of all stroke survivors experience hemiparesis on the contralateral side, resulting in chronic upper extremity (UE) impairment. Remote rehabilitation is a promising approach to optimize the gains made in the clinic to maximize function and promote UE use at home. This paper describes the study protocol for a remote home-based UE self-training program.

Design

This was a feasibility study that used a convergent mixed methods approach.

Methods

We collected data on 15 community-dwelling individuals with UE hemiparesis after stroke. The study used motivational interviewing (MI) and ecological momentary assessments (EMA) to maximize engagement in a 4-week personalized UE self-training program. The study consisted of three phases: 1) training in MI for the interventionists 2) creating customized treatment plans using shared decision making, and 3) four weeks of UE self-training.

Measures and analysis

To evaluate feasibility, we will summarize recruitment and retention rates, intervention delivery, acceptance, adherence, and safety. Quantitative UE outcomes will measure change in UE status after the intervention (Fugl-Meyer Assessment, Motor Activity Log, Canadian Occupational Performance Measure, and bilateral magnitude ratio). Qualitative data (1:1 semi-structured interviews) will capture participants' perceptions and experience with the intervention. Quantitative and qualitative data will be integrated to gain a deeper understanding of the facilitators and barriers for engagement and adherence to UE self-training.

Conclusion

The results of this study will advance the scientific knowledge for use of MI and EMA as methods for enhancing adherence and engagement in UE self-training in stroke rehabilitation. The ultimate impact of this research will be to improve UE recovery for individuals with stroke transitioning back into community.

Clinical trials registration

NCT05032638.

Perceived Facilitators and Barriers for Actual Arm Use during Everyday Activities in Community Dwelling Individuals with Chronic Stroke

BACKGROUND

Our aim was to gain a deeper understanding of perceived predictors for actual arm use during daily functional activities.

METHODS

Qualitative study. Semi-structured interview data collected from individuals with chronic stroke living in the community. Codebook thematic analysis used for the data analysis.

RESULTS

Six participants 5-18 years post stroke with moderate to severe UE impairment. Three domains were identified: Person, Context, and Task. Themes for the Person domain included mental (cognitive effort, lack of acceptance), behavioral (routines/habits, self-evaluation), and physical (stiffness/fatigue). Themes for the Context domain included social environment (being in public, presence, and actions of others) and time constraints (being in a hurry). Themes for the task domain included necessity to complete bilateral and unilateral tasks, and safety (increased risk of accidents).

CONCLUSION

Actual arm use is a complex construct related to the characteristics of the person, contextual environment, and the nature of the task. Facilitators included cognitive effort, routines/habits, self-evaluation, and the perceived necessity. Barriers included in lack of acceptance, stiffness/fatigue, being in public, being in a hurry, and risk of ac-cidents. Social support was both a facilitator and a barrier. Our results support the growing call to adopt a broader biopsychosocial framework into rehabilitation delivery.

Upper extremity self-efficacy correlates with daily hand-use of individuals with high functional capacity post-stroke

PURPOSE

To understand the role of affected upper extremity (UE) self-efficacy for explaining daily-hand-use in individuals post-stroke. Specifically, to describe UE self-efficacy and to assess the associations between UE self-efficacy to UE motor and functional capacity and daily hand-use.

MATERIALS AND METHODS

This cross-sectional study included individuals post-stroke receiving rehabilitation with high UE functional capacity [Action Research Arm Test (ARAT) > 50]. The Rating of Everyday Arm-Use in the Community and Home (REACH) assessed perceived UE daily use and the Confidence in Arm and Hand Movement scale (CAHM) assessed UE self-efficacy. Functional capacity was assessed by the ARAT and the Fugl-Meyer-motor-assessment assessed motor impairment. Correlations between measures were assessed.

RESULTS

Twenty-two individuals, aged 19-80, with high UE functional capacity [median (IQR) ARAT-56.5 (54-57)] and varying UE self-efficacy [median (IQR) CAHM-76.7 (58-84.4)], were included. UE self-efficacy was significantly correlated with the ARAT (r_s = 0.53, p < 0.01) and REACH (r_s = 0.51, p < 0.01) but ARAT was not significantly correlated with REACH.

CONCLUSIONS

UE self-efficacy is correlated with perceived daily hand-use in individuals with high functional capacity. Further research and a deeper understanding of the clinical implications of UE self-efficacy are warranted. UE self-efficacy should perhaps be assessed during rehabilitation. IMPLICATIONS FOR REHABILITATIONIndividuals with stroke with high affected upper extremity functional capacity do not necessarily use this hand for daily living.Upper extremity self-efficacy is correlated with perceived daily hand-use in individuals with high functional capacity; participants with higher upper extremity self-efficacy also reported more daily hand-use.Upper extremity self-efficacy seems to be upper extremity task or situation-specific.Upper extremity self-efficacy should be assessed during rehabilitation and the clinical implications of (low) upper extremity self-efficacy should be further researched.

Motor learning in neurological rehabilitation

While most upper limb training interventions in neurological rehabilitation are based on established principles of motor learning and neural plasticity, recovery potential may be improved if the focus includes remediating an individual's specific motor impairment within the framework of a motor control theory. This paper reviews current theories of motor control and motor learning and describes how they can be incorporated into training programs to enhance sensorimotor recovery in patients with neurological lesions. An emphasis is placed on dynamical systems theory and the use of new technologies such as virtual, augmented and mixed reality applications for rehabilitation to facilitate learning.Implications for RehabilitationKinematic abundance allows the healthy nervous system to produce different combinations of joint rotations to perform a desired task.The structure of practice to improve the movement repertoire in rehabilitation should take into account the kinematic abundance of the system.Learning can be enhanced by varied practice with feedback about key movement elements.Virtual reality environments provide opportunities to manipulate the structure and schedule of practice and feedback.

mHealth technologies used to capture walking and arm use behavior in adult stroke survivors: a scoping review beyond measurement properties

PURPOSE

We aimed to provide a critical review of measurement properties of mHealth technologies used for stroke survivors to measure the amount and intensity of functional skills, and to identify facilitators and barriers toward adoption in research and clinical practice.

MATERIALS AND METHODS

Using Arksey and O'Malley's framework, two independent reviewers determined eligibility and performed data extraction. We conducted an online consultation survey exercise with 37 experts.

RESULTS

Sixty-four out of 1380 studies were included. A majority reported on lower limb behavior (n = 32), primarily step count (n = 21). Seventeen studies reported on arm-hand behaviors. Twenty-two studies reported metrics of intensity, 10 reported on energy expenditure. Reliability and validity were the most frequently reported properties, both for commercial and non-commercial devices. Facilitators and barriers included: resource costs, technical aspects, perceived usability, and ecological legitimacy. Two additional categories emerged from the survey: safety and knowledge, attitude, and clinical skill.

CONCLUSIONS

This provides an initial foundation for a field experiencing rapid growth, new opportunities and the promise that mHealth technologies affords for envisioning a better future for stroke survivors. We synthesized findings into a set of recommendations for clinicians and clinician-scientists about how best to choose mHealth technologies for one's individual objective.Implications for RehabilitationRehabilitation professionals are encouraged to consider the measurement properties of those technologies that are used to monitor functional locomotor and object-interaction skills in the stroke survivors they serve.Multi-modal knowledge translation strategies (research synthesis, educational courses or videos, mentorship from experts, etc.) are available to rehabilitation professionals to improve knowledge, attitude, and skills pertaining to mHealth technologies.Consider the selection of commercially available devices that are proven to be valid, reliable, accurate, and responsive to the targeted clinical population.Consider usability and privacy, confidentiality and safety when choosing a specific device or smartphone application.

A Self-Empowered Upper Limb Repetitive Engagement Program to Improve Upper Limb Recovery Early Post-Stroke: Phase II Pilot Randomized Controlled Trial

Background. Time outside therapy provides an opportunity to increase upper limb (UL) use during post-stroke hospitalization. Objective. To determine if a self-directed UL program outside therapy (Self-Empowered UL Repetitive Engagement, SURE) was feasible and to explore the potential effect of the SURE program on UL use and recovery. Methods. Twenty-three patients from an inpatient rehabilitation center who were ≤21 days post-stroke and had a Fugl Meyer UL (FMUL) score ≤50 and a positive motor evoked potential (MEP+) response were randomized (stratified by impairment) to either experimental group (SURE: individualized, UL self-exercise and use outside therapy for 6 hours/week for 4 weeks) or control group (education booklet). Feasibility was evaluated by program adherence, dropout rate, adverse events, and satisfaction. Potential effect was measured by paretic UL use via accelerometry weekly during the intervention, FMUL and Action Research Arm Test (ARAT) at baseline (Week 0), post-intervention (Week 4), and follow-up (Week 8 and Week 16). Results. Adherence to SURE was high: 87% program completion (mean 313±75 repetitions/day). There were no dropouts, no adverse events related to SURE, and patient satisfaction averaged 7.8/10. Experimental participants achieved an additional hour of UL use daily (range: .3-1.2 hours/day) compared to control. Significant improvements in FMUL and ARAT were observed in both groups from Week 0 to Week 4 and to Week 8 (P ≤ .002), which were maintained to Week 16. There were no differences between groups (P ≥ .119). Conclusions. SURE was a feasible self-directed program that increased UL use in MEP+ individuals with moderate-severe impairment early post-stroke. Further studies with larger sample sizes and potentially higher dose are required to determine efficacy.

Effectiveness of a combined transcranial direct current stimulation and virtual reality-based intervention on upper limb function in chronic individuals post-stroke with persistent severe hemiparesis: a randomized controlled trial

BACKGROUND

Functional impairments derived from the non-use of severely affected upper limb after stroke have been proposed to be mitigated by action observation and imagination-based techniques, whose effectiveness is enhanced when combined with transcranial direct current stimulation (tDCS). Preliminary studies in mildly impaired individuals in the acute phase post-stroke show intensified effects when action is facilitated by tDCS and mediated by virtual reality (VR) but the effectiveness in cases of severe impairment and chronic stroke is unknown. This study investigated the effectiveness of a combined tDCS and VR-based intervention in the sensorimotor function of chronic individuals post-stroke with persistent severe hemiparesis compared to conventional physical therapy.

METHODS

Twenty-nine participants were randomized into an experimental group, who received 30 minutes of the combined tDCS and VR-based therapy and 30 minutes of conventional physical therapy, or a control group, who exclusively received conventional physical therapy focusing on passive and active assistive range of motion exercises. The sensorimotor function of all participants was assessed before and after 25 one-hour sessions, administered three to five times a week, using the upper extremity subscale of the Fugl-Meyer Assessment, the time and ability subscales of the Wolf Motor Function Test, and the Nottingham Sensory Assessment.

RESULTS

A clinically meaningful improvement of the upper limb motor function was consistently revealed in all motor measures after the experimental intervention, but not after conventional physical therapy. Similar limited effects were detected in the sensory function in both groups.

CONCLUSION

The combined tDCS and VR-based paradigm provided not only greater but also clinically meaningful improvement in the motor function (and similar sensory effects) in comparison to conventional physical therapy.

Recovering is about living my life, as it evolves: perspectives of stroke survivors in remote northwest Queensland

PURPOSE

Recovering from stroke in remote Australia has rarely been considered, even though rehabilitation services are generally scarce. The primary purpose of this study was to explore stroke recovery, from the perspective of stroke survivors in remote northwest Queensland (NWQ), to explicate the lens through which they view recovering. The secondary purpose was to explore the role of technology to support stroke survivors in remote locations along their recovery journey.

METHODS

A qualitative study was undertaken using elements of constructivist grounded theory for data collection and analysis. Semi-structured interviews were conducted with fifteen stroke survivors and two partners living, working or travelling in remote NWQ.

RESULTS

From the participants' perspective, recovering in a remote area after stroke is about living my life, as it evolves by endeavouring to recover my way and navigating my recovery in my world. Technology was only considered helpful when it supported participants to recover their way in their world.

CONCLUSION

Recovering from stroke from the perspective of stroke survivors in remote NWQ is about living their life, as they want it to be, and as it unfolds within their own context. Technology only has a place when it can support them to recover their way in their world. These findings reinforce the importance of health professionals listening, learning about, and enabling stroke survivors along their recovery journey, within their remote context and support network.Implications for RehabilitationRecovering from the perspective of stroke survivors is about living their life as it evolves.To support stroke survivors from remote areas, health professionals need to listen to and learn from each stroke survivor about what matters to them, what works for them, and about their world; including the challenges (e.g., switching between services) and enablers (e.g., community support) as the stroke survivor perceives them.Finding ways to utilise the strengths within and around them, may improve the recovery process for the stroke survivor in a remote area, ensuring they can access care that meets their needs in their world.Working together with stroke survivors, health professionals need to consider how technology could help them to live their life, while recovering their way and in their world.

Five Features to Look for in Early-Phase Clinical Intervention Studies

Neurorehabilitation relies on core principles of neuroplasticity to activate and engage latent neural connections, promote detour circuits, and reverse impairments. Clinical interventions incorporating these principles have been shown to promote recovery and demote compensation. However, many clinicians struggle to find interventions centered on these principles in our nascent, rapidly growing body of literature. Not to mention the immense pressure from regulatory bodies and organizational balance sheets that further discourage time-intensive recovery-promoting interventions, incentivizing clinicians to prioritize practical constraints over sound clinical decision making. Modern neurorehabilitation practices that result from these pressures favor strategies that encourage compensation over those that promote recovery. To narrow the gap between the busy clinician and the cutting-edge motor recovery literature, we distilled 5 features found in early-phase clinical intervention studies-ones that value the more enduring biological recovery processes over the more immediate compensatory remedies. Filtering emerging literature through this lens and routinely integrating promising research into daily practice can break down practical barriers for effective clinical translation and ultimately promote durable long-term outcomes. This perspective is meant to serve a new generation of mechanistically minded and caring clinicians, students, activists, and research trainees, who are poised to not only advance rehabilitation science, but also erect evidence-based policy changes to accelerate recovery-based stroke care.

Comparison of Machine Learning approaches for Classifying Upper Extremity Tasks in Individuals Post-Stroke

After a stroke, individuals often exhibit upper extremity (UE) motor dysfunction, influencing the performance of everyday tasks. Characterizing UE movements is useful to track recovery and response to intervention. Yet, due to the complexity of the recovery process, UE movements may be extremely variable and person-specific. While this renders automatic recognition of these gestures challenging, machine learning methods could be used to classify UE movements in atypical populations. In the current study, we utilize data from 20 individuals post-stroke and 20 age-matched controls to identify an optimal set of sensor-extracted features for the classification of unimanual and bimanual gestures during task performance. We found that using fewer than 100 features along with a random forest classifier produced the best performance across both groups, with both user-dependent and user-independent models.

Exploring the experiences of stroke patients treated with transcranial magnetic stimulation for upper limb recovery: a qualitative study

Background

Transcranial magnetic stimulation (TMS) treatments have shown promise in improving arm recovery in stroke patients. Currently, little is known about patients’ experiences with repetitive TMS treatment, and this lack of knowledge may affect optimal implementation in clinical practice. The aim of this explorative study was to gain insight in the perceived effects and experiences of the design and delivery of a rTMS treatment for upper limb recovery from the perspectives of stroke patients.

Methods

This qualitative study was conducted as part of a randomized controlled trial (RCT) in a specialized rehabilitation center. Data were collected through face-to-face semi-structured interviews with 13 stroke patients who completed a 10-day rTMS intervention for upper limb recovery. The interviews were recorded, transcribed verbatim and analyzed using thematic analysis.

Results

The major themes that emerged from the patients’ feedback were the following: positive experiences of the treatment (experienced physical effects, comfort, therapeutic relationship, receiving information, learning about the brain, no burden of added rTMS treatment session, no unpleasant aspects), concerns (effects of stimulation of the brain, equipment, logistics), general experience of recovery, experienced psychological effects (grateful, sense of purpose, recovery as extra motivation to exercise, disappointment and hope of group allocation), and motivation to participate (personal benefit and cognitions, altruism). Important components related to the positive experience of the design and delivery of the treatment included comfort (i.e. moment of relaxation) and the sensation of a painless treatment without side-effects. Key concerns included uncertainty and anxiety about possible negative consequences and group allocation.

Conclusions

This study demonstrates that rTMS is well accepted by stroke patients with an upper limb paresis. Besides the expectation of a therapeutic benefit, the patients reported various psychological effects. Positive experiences, such as the provision of a short moment of relaxation each day, could have practical implications for clinical stroke rehabilitation settings aimed at improving patient satisfaction. Explanation about and feedback from routine motor recovery progression monitoring at fixed times post-stroke is also valued by patients. Negative emotions may be limited or avoided by transparent and recurrent information delivery in future trials.

Characteristics Associated with the Differential Activity of Nondominant and Dominant Affected Hands in Patients with Poststroke Right Hemiparesis

OBJECTIVES

Spontaneous arm use in patients with poststroke hemiparesis is crucial to the recovery of functional interaction. Patients with stroke and subsequent right hemiparesis have more difficulty adapting to a right-handed environment. The aim of this study was to use wearable devices to assess the asymmetry and difference in the amount of activity of the nondominant and dominant affected hands among patients with stroke and right hemiparesis. The real activity of both hands was measured to assess the correlation with various aspects of the International Classification of Functioning, Disability and Health (ICF). Subjects and Methods. Patients with stroke and right hemiparesis were recruited. They were divided into two groups according to the affected hand. Groups A and B comprised patients with affected nondominant and dominant hands, respectively. The Fugl-Meyer assessment-Upper Extremity (FM-UE) scores, Motor Activity Log (MAL), and hand function domain scores on the Stroke Impact Scale (SIS) were used for assessment. Patients were asked to wear smart wearable devices on both hands 24 hours a day for a month. The amount of activity in both hands was recorded and analyzed.

RESULTS

A total of 29 patients with stroke were divided into group A (n = 14) and group B (n = 15). FM-UE scores were significantly and strongly correlated with the amount of use (AOU) in the MAL. The recorded differential real activity of both hands in group B was significantly lower than that in group A. The asymmetry index of hand use was significantly less favorable in group B. However, no significant differences in AOU in the MAL, FM-UE, and hand function domain in the SIS were identified between the nondominant and dominant affected hands.

CONCLUSIONS

The asymmetry and differential activity of both hands were worse in the patients with poststroke right hemiparesis, whose dominant hand was affected. However, no differences of three aspects of the ICF were found between dominant and nondominant affected hands.

How does context influence arm use after stroke? A qualitative content analysis among rural community-dwelling stroke survivors

OBJECTIVE

To explore the personal and environmental contextual factors that influence use of affected arm for function among stroke survivors.

METHODS

We conducted a qualitative phenomenological study using an interpretivist paradigm among 23 stroke survivors in their late sub-acute and chronic stages and their relatives living in the rural regions of India using maximum variation sampling. Semi-structured interviews were conducted to identify personal and environmental contextual factors relevant to arm use. Their current level of arm use, motor and functional ability were evaluated using Motor Activity Log, AbilHand and Lawton Instrumental Activities of Daily Living scales and the scores were categorized in order to describe and compare the participant's characteristics before analyzing each interview. Differences among the contextual factors of participants with high and low levels of functional arm use and exercise using paretic limb were analyzed using qualitative content analysis.

RESULTS

Study participants followed active exercises or passive interventions to improve their arm. Their immediate social environment influenced these decisions. Lack of awareness on how to self-engage or scale down their physical environment to match their abilities demoted active functional task performance. Ability to perceive small gains in arm function helped them sustain their efforts.

CONCLUSION

Context influences arm use. Addressing contextual determinants influencing arm use such as facilitating understanding about the need for active functional task engagement; identifying and addressing factors moderating motivation to sustain functional task practice and enriching objects to match their movement abilities can increase arm use and promote upper limb recovery.

Development of Sensor-Based Measures of Upper Extremity Interlimb Coordination

The development of motor impairment after the onset of an injury such as stroke may result in long-term compensatory behaviors. Because compensation often evolves in ambient settings (outside the purview of monitoring clinicians), there is a need for quantitative tools capable of accurately detecting the subtleties of compensation and related reduction in interlimb coordination. Improvement in interlimb coordination may serve as a marker of recovery from stroke, and rehabilitation progress. The current study investigates measures of upper extremity interlimb coordination in persons post-stroke and healthy controls. It introduces a novel algorithm for objective characterization of interlimb coordination during the performance of real-world tasks.

Upper Limb Performance in Daily Life Improves Over the First 12 Weeks Poststroke

Background. Upper limb (UL) performance, or use, in daily life is complex and likely influenced by many factors. While the recovery trajectory of UL impairment poststroke is well documented, little is known about the recovery trajectory of sensor-measured UL performance in daily life early after stroke and the potential moderating role of psychosocial factors. Objective. To examine the recovery trajectory of UL performance within the first 12 weeks poststroke and characterize the potential moderating role of belief, confidence, and motivation on UL performance. Methods. This was a longitudinal, prospective cohort study quantifying UL performance and related psychosocial factors early after stroke. UL performance was quantified via bilateral, wrist-worn accelerometers over 5 assessment sessions for 24 hours. Belief, confidence, and motivation to use the paretic UL, and self-perceived barriers to UL recovery were quantified via survey. Change in 4 accelerometer variables and the moderating role of psychosocial factors was tested using hierarchical linear modeling. The relationship between self-perceived barriers and UL performance was tested via Spearman rank-order correlation analysis. Results. UL performance improved over the first 12 weeks after stroke. Belief, confidence, and motivation did not moderate UL performance over time. There was a negative relationship between UL performance and self-perceived barriers to UL recovery at week 2, which declined over time. Conclusions. Sensor-measured UL performance can improve early after stroke. Early after stroke, rehabilitation interventions may not need to directly target belief, confidence, and motivation but may instead focus on reducing self-perceived barriers to UL recovery.

Belief, Confidence, and Motivation to Use the Paretic Upper Limb in Daily Life Over the First 24 Weeks After Stroke

BACKGROUND AND PURPOSE

The recovery patterns of upper limb (UL) impairment after stroke are established. Psychosocial factors such as belief that paretic UL recovery is possible, confidence, and motivation to use the paretic UL in everyday tasks are unexplored early after stroke. The purpose of this exploratory study was to characterize belief, confidence, and motivation to use the paretic UL in daily life, and self-perceived barriers to UL recovery over the first 24 weeks after stroke.

METHODS

This was a longitudinal cohort study (N = 30) with 8 assessment sessions over the first 24 weeks after stroke. Belief, confidence, and motivation to use the paretic UL and self-perceived barriers were quantified via survey and analyzed using descriptive statistics. Change in the number of self-perceived barriers between weeks 2 and 24 was tested using a paired-samples t test. The relationship between UL capacity, depressive symptomatology, cognition, and each psychosocial factor was examined using Spearman rank-order correlation analyses.

RESULTS

Twenty-two participants completed all study assessments. Belief, confidence, and motivation were high across the 24 weeks, with little variation. There was no difference between the average number of barriers from weeks 2 to 24. There was no relationship between the clinical measures and psychosocial factors at week 2, 12, or 24.

DISCUSSION AND CONCLUSIONS

High levels of belief, confidence, and motivation appear consistent over the first 6 months after stroke. The lack of correlations between psychosocial factors and clinical measures suggests belief, confidence, and motivation may not be vulnerable to functional status early after stroke.Video Abstract available for more insights from the authors (see the Video, Supplemental Digital Content 1 available at: http://links.lww.com/JNPT/A283).

The post-stroke upper limb improvement effort survey (IMPETUS): a survey of individuals with chronic stroke

BACKGROUND

There is a considerable literature on arm/hand dysfunction post stroke, but little information on the participants' opinions about perceived and desired arm/hand strength, recovery, and function.

OBJECTIVE

The objective of this study was to examine the perceptions of individuals with stroke about arm/hand function and training devices.

METHODS

A 69-item survey was developed addressing: activity before and after stroke, involved arm/hand function, willingness to use a training device, and important device characteristics. The survey included items from the Hand Function and Strength Subscales of the Stroke Impact Scale (SIS). Face validity was established by physical therapists and individuals with stroke. The survey was administered via phone and online.

RESULTS

852 registry participants were recruited. Ninety-seven responded; 83 completed the survey. Subjects were 51 males, 31 females; mean age: 65 (25-95); meantime since stroke: 13 years (1-34; SD 6.678). There was a statistically significant difference between perceived and desired arm/hand strength, recovery, and function p<0.0001. Impairment factors, such as weakness and spasticity were greater barriers to recovery than socio-economic ones. Most participants (94%) were willing to use a device; functional gains during/following use were the most important characteristics.

LIMITATIONS

Participants had greater arm impairment and were more chronic than other studies.

CONCLUSIONS

Participants desired more arm/hand strength, function, and recovery that they perceived they had achieved. Impairment - level factors posed more barriers to arm recovery than socioeconomic ones. Most participants were interested in using arm/hand training devices; the most important device characteristic is functional gain.

Experiences of Upper Limb Somatosensory Retraining in Persons With Stroke: An Interpretative Phenomenological Analysis

Purpose

The aim of this study was to explore experiences of upper limb somatosensory discrimination retraining in persons with stroke.

Methods

A qualitative methodology was used within the context of a randomized control trial of somatosensory retraining: the CoNNECT trial. Participants in the CoNNECT trial completed a treatment program, known as SENSe therapy, to retrain upper limb somatosensory discrimination and recognition skills, and use of these skills in personally valued activities. Eight participants were interviewed on their experience of this therapy. Data were analyzed using Interpretative Phenomenological Analysis (IPA).

Results

Five themes represented participants’ experiences of upper limb somatosensory retraining after stroke: (1) loss of sensation and desire to reclaim normality; (2) harnessing positivity in the therapeutic relationship and specialized therapy; (3) facing cognitive and emotional challenges; (4) distinct awareness of gains and differences in bodily sensations; and (5) improved functioning: control and choice in daily performance. Persons with stroke experienced somatosensory retraining as a valuable treatment that provided them with sensory and functional gains.

Conclusion

Upper limb somatosensory retraining is a treatment that persons with stroke perceived as challenging and rewarding. People who have experienced stroke believed that somatosensory retraining therapy assisted them to improve their sensation, functional arm use, as well as daily performance and participation in life.

Dosage Matters

Background and Purpose- For stroke rehabilitation, task-specific training in animal models and human rehabilitation trials is considered important to modulate neuroplasticity, promote motor learning, and functional recovery. Little is known about what constitutes an effective dosage of therapy. Methods- This is a parallel group, 4 arms, single-blind, phase IIb, randomized controlled trial of 4 dosages of arm therapy delivered in an outpatient setting chronically after stroke. Participants were randomized into groups that varied in duration of scheduled therapy (ie, 0, 15, 30, or 60 hours). Forty-one participants completed the study. Planned primary analyses used linear mixed effects regression to model changes from baseline to postintervention in the Motor Activity Log-Quality of Movement rating and the Wolf Motor Function Test time score over 3 weeks of training as a function of therapy dosage. Results- We observed a dose response for the Motor Activity Log-Quality of Movement: the model that included dose and dose by week interaction significantly better fit the data than the model that included week only (log-likelihood test, P=0.0026). In addition, the greater the dosage of training, the greater the change in Motor Activity Log-Quality of Movement, with the dose by week interaction parameter equal to 0.0045 ( P=0.0016; 95% CI, 0.0018-0.0071). Over the 3 weeks of therapy, there was a gain of 0.92 in Motor Activity Log-Quality of Movement for the 60-hour group compared to the 0-hour group. There was no dose response for the Wolf Motor Function Test. Conclusions- For mild-to-moderately impaired stroke survivors, the dosage of patient-centered, task-specific practice systematically influences the gain in quality of arm use but not functional capacity. We caution that we may have been underpowered for the functional capacity outcome. These findings highlight the importance of recovery outcomes that capture arm use in the natural environment. Clinical Trial Registration- URL: https://www.clinicaltrials.gov . Unique identifier: NCT01749358.

Effects of Hand Configuration on the Grasping, Holding, and Placement of an Instrumented Object in Patients With Hemiparesis

Objective: Limitations with manual dexterity are an important problem for patients suffering from hemiparesis post stroke. Sensorimotor deficits, compensatory strategies and the use of alternative grasping configurations may influence the efficiency of prehensile motor behavior. The aim of the present study is to examine how different grasp configurations affect patient ability to regulate both grip forces and object orientation when lifting, holding and placing an object.

Methods: Twelve stroke patients with mild to moderate hemiparesis were recruited. Each was required to lift, hold and replace an instrumented object. Four different grasp configurations were tested on both the hemiparetic and less affected arms. Load cells from each of the 6 faces of the instrumented object and an integrated inertial measurement unit were used to extract data regarding the timing of unloading/loading phases, regulation of grip forces, and object orientation throughout the task.

Results: Grip forces were greatest when using a palmar-digital grasp and lowest when using a top grasp. The time delay between peak acceleration and maximum grip force was also greatest for palmar-digital grasp and lowest for the top grasp. Use of the hemiparetic arm was associated with increased duration of the unloading phase and greater difficulty with maintaining the vertical orientation of the object at the transitions to object lifting and object placement. The occurrence of touch and push errors at the onset of grasp varied according to both grasp configuration and use of the hemiparetic arm.

Conclusion: Stroke patients exhibit impairments in the scale and temporal precision of grip force adjustments and reduced ability to maintain object orientation with various grasp configurations using the hemiparetic arm. Nonetheless, the timing and magnitude of grip force adjustments may be facilitated using a top grasp configuration. Conversely, whole hand prehension strategies compound difficulties with grip force scaling and inhibit the synchrony of grasp onset and object release.

Analysis of the Factors Related to the Effectiveness of Transcranial Current Stimulation in Upper Limb Motor Function Recovery after Stroke: a Systematic Review

Transcranial direct current stimulation is one of the non-invasive techniques whose main mechanism of action is based on its modulation of cortical excitability. The objective of this study is to analyze the variables (i.e, demographics, clinicals, stimulation parameters) that could influence into the responses during rehabilitation of the upper extremity in patients with stroke. Our systematic review has been performed by searching full-text articles published from January 2008 to December 2018 in Embase, Medline, PubMed and Cochrane Library databases. Studies with adult patients with ischemic or hemorrhagic stroke at any stage of evolution were included. We compared interventions with any type of transcranial direct current stimulation (anodal, cathodal or bihemispheric, also known as dual) regarding improvement of upper extremity motor function. We included 14 studies with 368 patients, of whom almost 89% have ischemic etiology and more than half are males. Most patients were considered subacute or chronic, while only two studies were selected with patients in the acute phase. Different methods of using transcranial direct current stimulation with several complementary therapies were identified, such as virtual reality, robot therapy, Occupational Therapy, Physiotherapy, Constraint Induced Movement Therapy or Peripheral Nerve Stimulation. In conclusion, there is not significant evidence due to heterogeneity of clinical data and therapies. Clinical studies with greater number of participants and protocols standardized could outline this assessment in future studies.

Characterising Arm Recovery in People with Severe Stroke (CARPSS): protocol for a 12-month observational study of clinical, neuroimaging and neurophysiological biomarkers

INTRODUCTION

In individuals with early (indexed ≤7 days poststroke) and severe upper limb paresis (shoulder abduction and finger extension score of <5 out of 10), our objectives are to: (1) determine if biomarkers of brain structure and function collected at <1 month poststroke explain who will experience clinically important recovery over the first 12 months poststroke; (2) compare stroke survivors' perceptions of personally meaningful recovery to clinically important recovery; and (3) characterise the trajectory of change in measures of motor function, brain structure and function.

METHODS AND ANALYSIS

Prospective observational study with an inception cohort of 78 first-time stroke survivors. Participants will be recruited from a single, large tertiary stroke referral centre. Clinical and biomarker assessments will be completed at four follow-up time points: 2 to 4 weeks and 3, 6 and 12 months poststroke. Our primary outcome is achievement of clinically important improvement on two out of three measures that span impairment (Fugl-Meyer Upper Limb, change ≥10 points), activity (Motor Assessment Scale item 6, change ≥1 point) and participation (Rating of Everyday Arm-use in the Community and Home, change ≥1 point). Brain biomarkers of structure and function will be indexed using transcranial magnetic stimulation and MRI. Multilevel modelling will be performed to examine the relationship between clinically important recovery achieved (yes/no) and a priori defined brain biomarkers related to the corticospinal tract and corpus callosum. Secondary analyses will compare stroke survivor's perception of recovery, as well as real-world arm use via accelerometry, to the proposed metric of clinically meaningful recovery; and model trajectory of recovery across clinical, a priori defined biomarkers and exploratory variables related to functional connectivity.

ETHICS AND DISSEMINATION

Approved by the hospital and university ethics review boards. Results will be disseminated through peer-reviewed publications and conference presentations.

TRIAL REGISTRATION NUMBER

NCT02464085.

A Novel EMG-driven Functional Electrical Stimulator for Post- Stroke Individuals to Practice Activities of Daily Living

Prior research has demonstrated that hand function can be recovered in individuals with mild stroke through an intervention that is both 'intense' and 'functional'. However, in individuals with moderate to severe post stroke hand paresis, current evidence for an effective intervention to regain hand function is almost absent. A possible contributor to such poor recovery in these individuals may be the inability to intensively practice with the paretic hand during activities of daily living (ADLs). Many ADLs require use of the paretic arm and hand. Due to post-stroke abnormal muscle synergies, functional arm movements, such as lifting or reaching, often result in unwanted activity in the wrist/finger flexors. This makes voluntary hand opening more difficult. A possible solution to enable these individuals to practice with their paretic hand in a functional context is using devices to assist hand opening. Unfortunately, most of currently available hand rehabilitation devices do not sufficiently address hand opening with the appearance of abnormal muscle synergies. We, therefore, developed a synergy resistant, electromyographic (EMG)-driven electrical stimulation device that allows for $\mathbf {Re}$liable and $\mathbf {In}$tuitive control of the hand (ReIn-Hand) opening while using the paretic arm during lifting and reaching.

Factors affecting rehabilitation and use of upper limb after stroke: views from healthcare professionals and stroke survivors

BACKGROUND

Training of the upper limb (UL) is limited in stroke rehabilitation, and about 50% of stroke survivors do not regain useful function in their upper limb.

OBJECTIVES

This study explored what factors affect rehabilitation and use of upper limb after stroke from a stroke survivor and healthcare professional perspective to better understand low engagement in UL rehabilitation in the chronic stages of stroke.

METHOD

Eight chronic stroke survivors and 21 healthcare professionals took part in semi-structured interviews or in one of three focus groups, respectively.

RESULTS

Thematic analysis revealed three main themes: Availability of resources, Healthcare professional-patient relationship, and Psychosocial factors. Availability of resources and Healthcare professional-patient relationship indicated that due to resource pressures and a lack of communication and education, positive upper limb rehabilitation behaviors (e.g. engaging and integrating the upper limb in daily activity) were not always established in the early stages post-stroke. Psychosocial factors illustrated the cognitive and psychological barriers to sustained engagement with upper limb rehabilitation.

CONCLUSION

The findings indicate that stroke survivors and healthcare professionals have very similar understandings of barriers to UL activity, and positive upper limb rehabilitation behaviors are not always established early in recovery post-stroke. Increased resources and healthcare professional-patient relationships seem key factors to establishing positive perceptions of UL rehabilitation. Addressing psychosocial issues and resource limitations may help sustain engagement with UL rehabilitation.

Effects of shoulder strapping in patients with stroke: A randomised control trial

Background

Disability post stroke remains a global problem, with upper limb involvement playing a key role. Shoulder strapping is one of the techniques used clinically to address this.

Objectives

To compare the effect of two shoulder strapping techniques in patients with stroke.

Method

A longitudinal randomised controlled trial included baseline, weeks one, two and six assessments of 56 participants with upper limb hemiplegia. The participants were assessed for shoulder subluxation, shoulder pain, upper limb motor function and muscle tone. They were randomised into control, longitudinal strapping or circumferential strapping groups.

Results

Longitudinal strapping had a non-significant decrease in shoulder subluxation and pain (p > 0.05). Circumferential strapping had no significant effect on any outcomes; however, it prevented the shoulder pain from worsening as much as in the control group (p > 0.05). General improvement in upper limb motor function was observed for all three groups.

Conclusion

Trends in improvement showed that longitudinal strapping could be recommended because it positively influenced shoulder subluxation and pain. Even without significant changes, strapping creates awareness of the limb in patients and caregivers and could be of clinical benefit.

Clinical implication

Longitudinal strapping of the shoulder in patients with stroke seems to positively influence shoulder subluxation and pain.

Stepping Up to Rethink the Future of Rehabilitation: IV STEP Considerations and Inspirations

BACKGROUND AND PURPOSE

The IV STEP conference challenged presenters and participants to consider the state of science in rehabilitation, highlighting key area of progress since the previous STEP conference related to prediction, prevention, plasticity, and participation in rehabilitation.

KEY POINTS

Emerging from the thought-provoking discussions was recognition of the progress we have made as a profession and a call for future growth. In this summary article, we present a recap of the key points and call for action. We review the information presented and the field at large as it relates to the 4 Ps: prediction, prevention, plasticity, and participation.

RECOMMENDATIONS FOR PRACTICE

Given that personalized medicine is an increasingly important approach that was clearly woven throughout the IV STEP presentations, we took the liberty of adding a fifth "P," Personalized, in our discussion of the future direction of the profession.

Combined Transcranial Direct Current Stimulation and Virtual Reality-Based Paradigm for Upper Limb Rehabilitation in Individuals with Restricted Movements. A Feasibility Study with a Chronic Stroke Survivor with Severe Hemiparesis

Impairments of the upper limb function are a major cause of disability and rehabilitation. Most of the available therapeutic options are based on active exercises and on motor and attentional inclusion of the affected arm in task oriented movements. However, active movements may not be possible after severe impairment of the upper limbs. Different techniques, such as mirror therapy, motor imagery, and non-invasive brain stimulation have been shown to elicit cortical activity in absence of movements, which could be used to preserve the available neural circuits and promote motor learning. We present a virtual reality-based paradigm for upper limb rehabilitation that allows for interaction of individuals with restricted movements from active responses triggered when they attempt to perform a movement. The experimental system also provides multisensory stimulation in the visual, auditory, and tactile channels, and transcranial direct current stimulation coherent to the observed movements. A feasibility study with a chronic stroke survivor with severe hemiparesis who seemed to reach a rehabilitation plateau after two years of its inclusion in a physical therapy program showed clinically meaningful improvement of the upper limb function after the experimental intervention and maintenance of gains in both the body function and activity. The experimental intervention also was reported to be usable and motivating. Although very preliminary, these results could highlight the potential of this intervention to promote functional recovery in severe impairments of the upper limb.

Thoughts About the Negative Results of Clinical Trials in Rehabilitation Medicine

The last decade has witnessed an increase in the number of moderate to large-scale nonpharmacologic stroke recovery trials. While a majority, having tested the superiority of a particular evidence-based intervention, returned negative findings, the rehabilitation research community has gained an important perspective for future efforts. We offer our interpretation first, on why most of the past decade’s trials failed in the sense of not supporting the primary superiority hypothesis, and, second, we provide our perspective on how to solve this problem and thereby inform the next generation of neurorehabilitation clinical trials. The first large-scale randomized controlled trial (RCT) ever conducted in neurorehabilitation was the Extremity Constraint Induced Movement Therapy Evaluation (EXCITE) trial. The majority of stroke recovery trials that followed were based on a prevailing, but as yet immature science of brain-behavior mechanisms for recovery and limited practical know-how about how to select the most meaningful outcomes. The research community had been seduced by a set of preclinical studies, ignited by the 1990’s revolution in neuroscience and an oversimplified premise that high doses of task-oriented training was the most important ingredient to foster recovery. Here, we highlight recent qualitative and quantitative evidence, both mechanistic and theory-driven, that integrates crucial social and personal factors to inform a more mature science better suited for the next generation of recovery-supportive rehabilitation clinical trials.

Innovative STRoke Interactive Virtual thErapy (STRIVE) online platform for community-dwelling stroke survivors: a randomised controlled trial protocol

INTRODUCTION

The STRoke Interactive Virtual thErapy (STRIVE) intervention provides community-dwelling stroke survivors access to individualised, remotely supervised progressive exercise training via an online platform. This trial aims to determine the clinical efficacy of the STRIVE intervention and its effect on brain activity in community-dwelling stroke survivors.

METHODS AND ANALYSIS

In a multisite, assessor-blinded randomised controlled trial, 60 stroke survivors >3 months poststroke with mild-to-moderate upper extremity impairment will be recruited and equally randomised by location (Melbourne, Victoria or Launceston, Tasmania) to receive 8 weeks of virtual therapy (VT) at a local exercise training facility or usual care. Participants allocated to VT will perform 3-5 upper limb exercises individualised to their impairment severity and preference, while participants allocated to usual care will be asked to maintain their usual daily activities. The primary outcome measures will be upper limb motor function and impairment, which will be assessed using the Action Research Arm Test and Upper Extremity Fugl-Meyer, respectively. Secondary outcome measures include upper extremity function and spasticity, as measured by the box and block test and Modified AshworthScale, respectively, and task-related changes in bilateral sensorimotor cortex haemodynamics during hand reaching and wrist extension movements as measured by functional near-infrared spectroscopy. Quality of life will be measured using the Euro-Quality of Life-5 Dimension-5 Level Scale, and the Motor Activity Log-28 will be used to measure use of the hemiparetic arm. All measures will be assessed at baseline and immediately postintervention.

ETHICS AND DISSEMINATION

The study was approved by the Deakin University Human Research Ethics Committee in May 2017 (No. 2017-087). The results will be disseminated in peer-reviewed journals and presented at major international stroke meetings.

TRIAL REGISTRATION NUMBER

ACTRN12617000745347; Pre-results.

The ATTEND trial: An alternative explanation with implications for future recovery and rehabilitation clinical trials

Over the past decade, ATTEND is one of only a handful of moderate to large-scale nonpharmacologic stroke recovery trials with a focus on rehabilitation. While unique in some respects, its test of superiority for the experimental intervention returned negative/neutral results, with no differences in outcome between the experimental intervention and an appropriate control group – a result not uncommon to the majority of moderate to large stroke rehabilitation intervention trials (i.e. six out of eight conducted in the past decade). The authors offer a number of potential explanations for the negative outcome, all of which have merit. We choose not to dwell on these possibilities, but rather offer a radically different explanation, one which has implications for future rehabilitation clinical trials. Our premise is that the process of neurorehabilitation is complex and multifaceted, but most importantly, for success, it requires a genuine collaboration between the patient and the clinician or caregiver to effect optimal recovery. This collaborative relationship must be defined by the unique perspective of each patient. By doing so, we acknowledge the importance of the individual patient’s values, goals, perspectives, and capacity. Rehabilitation scientists can design what arguably is a scientifically sound intervention that is evidence-based and even with preliminary data supporting its efficacy, but if the patient does not value the target outcome, does not fully engage in the therapy, or does not expect the intervention to succeed, the likelihood of success is poor. We offer this opinion, not to be critical, but to suggest a paradigm shift in the way in which we conduct stroke recovery and rehabilitation trials.

Stepping Up to Rethink the Future of Rehabilitation: IV STEP Considerations and Inspirations

BACKGROUND AND PURPOSE

The IV STEP conference challenged presenters and participants to consider the state of science in rehabilitation, highlighting key area of progress since the previous STEP conference related to prediction, prevention, plasticity, and participation in rehabilitation.

KEY POINTS

Emerging from the thought-provoking discussions was recognition of the progress we have made as a profession and a call for future growth. In this summary article, we present a recap of the key points and call for action. We review the information presented and the field at large as it relates to the 4 Ps: prediction, prevention, plasticity, and participation.

RECOMMENDATIONS FOR PRACTICE

Given that personalized medicine is an increasingly important approach that was clearly woven throughout the IV STEP presentations, we took the liberty of adding a fifth "P," Personalized, in our discussion of the future direction of the profession.

Hemispheric asymmetry in myelin after stroke is related to motor impairment and function

The relationships between impairment, function, arm use and underlying brain structure following stroke remain unclear. Although diffusion weighted imaging is useful in broadly assessing white matter structure, it has limited utility in identifying specific underlying neurobiological components, such as myelin. The purpose of the present study was to explore relationships between myelination and impairment, function and activity in individuals with chronic stroke. Assessments of paretic upper-extremity impairment and function were administered, and 72-hour accelerometer based activity monitoring was conducted on 19 individuals with chronic stroke. Participants completed a magnetic resonance imaging protocol that included a high resolution T₁ anatomical scan and a multi-component T₂ relaxation imaging scan to quantify myelin water fraction (MWF). MWF was automatically parcellated from pre- and post-central subcortical regions of interest and quantified as an asymmetry ratio (contralesional/ipsilesional). Cluster analysis was used to group more and less impaired individuals based on Fugl-Meyer upper extremity scores. A significantly higher precentral MWF asymmetry ratio was found in the more impaired group compared to the less impaired group (p < 0.001). There were no relationships between MWF asymmetry ratio and upper-limb use. Stepwise multiple linear regression identified precentral MWF asymmetry as the only variable to significantly predict impairment and motor function in the upper extremity (UE). These results suggest that asymmetric myelination in a motor specific brain area is a significant predictor of upper-extremity impairment and function in individuals with chronic stroke. As such, myelination may be utilized as a more specific marker of the neurobiological changes that predict long term impairment and recovery from stroke.

Does Task-Specific Training Improve Upper Limb Performance in Daily Life Poststroke?

BACKGROUND

A common assumption is that changes in upper limb (UL) capacity, or what an individual is capable of doing, translates to improved UL performance in daily life, or what an individual actually does. This assumption should be explicitly tested for individuals with UL paresis poststroke.

OBJECTIVE

To examine changes in UL performance after an intensive, individualized, progressive, task-specific UL intervention for individuals at least 6 months poststroke.

METHODS

Secondary analysis on 78 individuals with UL paresis who participated in a phase II, single-blind, randomized parallel dose-response trial. Participants were enrolled in a task-specific intervention for 8 weeks. Participants were randomized into 1 of 4 treatment groups with each group completing different amounts of UL movement practice. UL performance was assessed with bilateral, wrist-worn accelerometers once a week for 24 hours throughout the duration of the study. The 6 accelerometer variables were tested for change and the influence of potential modifiers using hierarchical linear modeling.

RESULTS

No changes in UL performance were found on any of the 6 accelerometer variables used to quantify UL performance. Neither changes in UL capacity nor the overall amount of movement practice influenced changes in UL performance. Stroke chronicity, baseline UL capacity, concordance, and ADL status significantly increased the baseline starting points but did not influence the rate of change (slopes) for participants.

CONCLUSIONS

Improved motor capacity resulting from an intensive outpatient UL intervention does not appear to translate to increased UL performance outside the clinic.

Prediction of Walking and Arm Recovery after Stroke: A Critical Review

Clinicians often base their predictions of walking and arm recovery on multiple predictors. Multivariate prediction models may assist clinicians to make accurate predictions. Several reviews have been published on the prediction of motor recovery after stroke, but none have critically appraised development and validation studies of models for predicting walking and arm recovery. In this review, we highlight some common methodological limitations of models that have been developed and validated. Notable models include the proportional recovery model and the PREP algorithm. We also identify five other models based on clinical predictors that might be ready for further validation. It has been suggested that neurophysiological and neuroimaging data may be used to predict arm recovery. Current evidence suggests, but does not show conclusively, that the addition of neurophysiological and neuroimaging data to models containing clinical predictors yields clinically important increases in predictive accuracy.

Effects of virtual reality for stroke individuals based on the International Classification of Functioning and Health: a systematic review

OBJECTIVE

This review determines the effects of virtual reality interventions for stroke subjects based on the International Classification of Functioning, Disability,and Health (ICF) framework. Virtual reality is a promising tool for therapy for stroke rehabilitation, but the effects of virtual reality interventions on post-stroke patients based on the specific ICF domains (Body Structures, Body Functions, Activity, and Participation) have not been investigated.

METHOD

A systematic review was conducted, including trials with adults with a clinical diagnosis of a chronic, subacute, or acute stroke. Eligible trials had to include studies with an intervention protocol and follow-up, with a focus on upper limbs and/or lower limbs and/or balance. The Physiotherapy Evidence Database (PEDro) was used to assess the methodological quality of randomized controlled trials. Each trial was separated according to methodological quality into a high-quality trial (PEDro ≥ 6) and a low-quality trial (PEDro ≤ 6). Only high-quality trials were analyzed specifically based on the outcome of these trials.

RESULTS

In total, 54 trials involving 1811 participants were included. Of the papers included and considered high quality, 14 trials evaluated areas of the Body Structures component, 20 trials of the Body Functions domain, 17 trials of the Activity component, and 8 trials of the Participation domain. In relation to ICF Part 2, four trials evaluated areas of the Personal Factors component and one trial evaluated domains of the Environmental Factors component.

DISCUSSION

The effects of virtual reality on stroke rehabilitation based on the ICF framework are positive in Body Function and Body Structure. However, the results in the domains Activity and Participation are inconclusive. More high-quality clinical trials are needed to confirm the effectiveness of virtual reality in the domains of Activity and Participation.

On the assessment of coordination between upper extremities: towards a common language between rehabilitation engineers, clinicians and neuroscientists

Well-developed coordination of the upper extremities is critical for function in everyday life. Interlimb coordination is an intuitive, yet subjective concept that refers to spatio-temporal relationships between kinematic, kinetic and physiological variables of two or more limbs executing a motor task with a common goal. While both the clinical and neuroscience communities agree on the relevance of assessing and quantifying interlimb coordination, rehabilitation engineers struggle to translate the knowledge and needs of clinicians and neuroscientists into technological devices for the impaired. The use of ambiguous definitions in the scientific literature, and lack of common agreement on what should be measured, present large barriers to advancements in this area. Here, we present the different definitions and approaches to assess and quantify interlimb coordination in the clinic, in motor control studies, and by state-of-the-art robotic devices. We then propose a taxonomy of interlimb activities and give recommendations for future neuroscience-based robotic- and sensor-based assessments of upper limb function that are applicable to the everyday clinical practice. We believe this is the first step towards our long-term goal of unifying different fields and help the generation of more consistent and effective tools for neurorehabilitation.

Self-Administered, Home-Based SMART (Sensorimotor Active Rehabilitation Training) Arm Training: A Single-Case Report

This single-case, mixed-method study explored the feasibility of self-administered, home-based SMART (sensorimotor active rehabilitation training) Arm training for a 57-yr-old man with severe upper-limb disability after a right frontoparietal hemorrhagic stroke 9 mo earlier. Over 4 wk of self-administered, home-based SMART Arm training, the participant completed 2,100 repetitions unassisted. His wife provided support for equipment set-up and training progressions. Clinically meaningful improvements in arm impairment (strength), activity (arm and hand tasks), and participation (use of arm in everyday tasks) occurred after training (at 4 wk) and at follow-up (at 16 wk). Areas for refinement of SMART Arm training derived from thematic analysis of the participant's and researchers' journals focused on enabling independence, ensuring home and user friendliness, maintaining the motivation to persevere, progressing toward everyday tasks, and integrating practice into daily routine. These findings suggest that further investigation of self-administered, home-based SMART Arm training is warranted for people with stroke who have severe upper-limb disability.

Translating the science into practice: shaping rehabilitation practice to enhance recovery after brain damage

The revolution in neuroscience provided strong evidence for learning-dependent neuroplasticity and presaged the role of motor learning as essential for restorative therapies after stroke and other disabling neurological conditions. The scientific basis of motor learning has continued to evolve from a dominance of cognitive or information processing perspectives to a blend with neural science and contemporary social-cognitive-psychological science, which includes the neural and psychological underpinnings of motivation. This transformation and integration across traditionally separate domains is timely now that clinician scientists are developing novel, evidence-based therapies to maximize motor recovery in the place of suboptimal solutions. We will review recent evidence pertaining to therapeutic approaches that spring from an integrated framework of learning-dependent neuroplasticity along with the growing awareness of protocols that directly address the patient's fundamental psychological needs. Of importance, there is mounting evidence that when the individual's needs are considered in the context of instructions or expectations, the learning/rehabilitation process is accelerated.

Classifying physical activity research following stroke using the behavioral epidemiologic framework

BACKGROUND

Stroke is a significant public health issue in the USA and a need emerges to better understand how to reduce an individual's co-morbidity risk. Physical activity is one approach to improving the health of individuals and comprehensive literature supports increased activity as a means to reduce risk of morbidity and mortality. One approach to examining whether research in a field is addressing a public health issue is through application of the behavioral epidemiological framework.

OBJECTIVE

To classify physical activity research for individuals following stroke into distinct phases so that efforts can be made to systematically address gaps and disseminate evidence-based practice.

METHODS

Specific key words were identified and then searched through EBSCO host, PubMed, and Google Scholar. Physical activity and stroke literature from 2000-2014 was categorized into one of five discrete phases. Research in Phase 1 identified associations between activity and health; Phase 2 established valid measures of activity; Phase 3 examined determinants of behavior; Phase 4 evaluated activity interventions; and Phase 5 disseminated evidence-based practice.

RESULTS

A comprehensive review of literature identified 202 articles with 70% categorized in Phase 1 (n = 141), 11% in Phase 2 (n = 23), 10% in Phase 3 (n = 20), 8% in Phase 4 (n = 15), and 1% in Phase 5 (n = 3).

CONCLUSION

Findings suggest that physical activity research for individuals following stroke is in the early stages of development with less than 10% of research evaluating or disseminating interventions.

Control of reach extent with the paretic and nonparetic arms after unilateral sensorimotor stroke II: planning and adjustments to control movement distance

Nondisabled adults utilize both planning and feedback-based compensatory adjustments to control actual distance moved for skilled reach actions. The purpose of this study was to determine whether individuals post-stroke utilize planning and compensatory adjustments to control movement distance for reaches to targets that vary in distance. Individuals with mild to moderate motor impairment after stroke and nondisabled adults reached with both arms to targets presented at three distances (8, 16, 24 cm). The control of movement distance was compared between arms (control, nonparetic, and paretic) as to the use of planning (correlation of peak acceleration with movement distance), compensatory adjustments prior to peak velocity (correlation of time to peak velocity with movement distance), and compensatory adjustments after peak velocity (variance in movement distance accounted for by deterministic statistical model). The correlation of peak acceleration with movement distance for reaches with the paretic arm was significantly less than controls suggesting a decreased reliance on planning. Feedback-based compensatory adjustments, however, were present prior to and after peak velocity that assisted in achievement of movement distance in a similar manner as controls. Overall reach performance with the paretic arm was impaired, however, as evidenced by greater endpoint error and longer movement times than controls. The decreased use of planning to control movement distance after stroke suggests that the selected motor command was suboptimal in producing the desired movement outcome and may be related to an inability to generate muscle force quickly, lack of knowledge of arm dynamics due to decreased arm use, or lesion characteristics.