Graded Wolf Motor Function Test Research Articles

The reliability of the graded Wolf Motor Function Test for stroke

Introduction The graded Wolf Motor Function Test assesses upper limb function following stroke. Clinical utility is limited by the requirement to video record for scoring purposes. This study aimed to (a) assess whether video recording is required through examination of inter-rater reliability and agreement; and (b) assess intra-rater reliability and agreement. Method A convenience sample of 30 individuals were recruited following stroke. The graded Wolf Motor Function Test was administered within 2 weeks of rehabilitation commencement and at 3 months. Two occupational therapists scored participants through either direct observation or video. Inter- and intra-rater reliability and agreement were examined for item-level and summary scores. Results Excellent inter-rater reliability ( n = 28) was found between scoring through direct observation and by video (intraclass correlation coefficients >0.9), and excellent intra-rater reliability ( n = 21) was found (intraclass correlation coefficients >0.9) for item-level and summary scores. Low agreement was found between raters at the item level. Adequate agreement was found for total functional ability, with increased measurement error found for total performance time. Conclusion The graded Wolf Motor Function Test is a reliable measure of upper limb function. Video recording may not be required by therapists. In view of low agreement, future studies should assess the impact of standardised training.

A systematic review of the application and psychometric properties of the graded Wolf Motor Function Test

Introduction Adapted from the Wolf Motor Function Test, the graded Wolf Motor Function Test is an upper limb activity assessment for use following stroke and brain injury. The aim of this systematic review was to identify and appraise evidence where the test has been used or has undergone psychometric evaluation. Method A systematic review of five databases was conducted to identify studies reporting the graded Wolf Motor Function Test using a keyword search. Intervention and clinical measurement studies were eligible for inclusion. Data quality was assessed using the adapted Critical Appraisal Skills Programme questions and the Consensus-based Standards for the Selection of Health Measurement Instruments Risk of Bias checklist. Results Twelve studies, of mostly low quality, were included. Studies included one randomised controlled trial, 10 pre- and post-studies and one clinical measurement study. All studies involved participants following stroke. Reliability was the only measurement property assessed in two studies, which were of a ‘doubtful’ and ‘poor’ quality. Conclusion Low quality studies impede the ability of clinicians and researchers to best determine the applicability of the graded Wolf Motor Function Test to patient groups and research contexts. Further exploration of the psychometric properties of the graded Wolf Motor Function Test is recommended across stroke populations using rigorous design methods.

Use of a Portable Assistive Glove to Facilitate Rehabilitation in Stroke Survivors With Severe Hand Impairment.

Treatment options for stroke survivors with severe hand impairment are limited. Active task practice can be restricted by difficulty in voluntarily activating finger muscles and interference from involuntary muscle excitation. We developed a portable, actuated glove-orthosis, which could be employed to address both issues. We hypothesized that combining passive cyclical stretching (reducing motoneuronal hyperexcitability) imposed by the device with active-assisted, task-oriented training (rehabilitating muscle activation) would improve upper extremity motor control and task performance post-stroke. Thirteen participants who experienced a stroke 2-6 months prior to enrollment completed 15 treatment sessions over five weeks. Each session involved cyclically stretching the long finger flexors (30 min) followed by active-assisted task-oriented movement practice (60 min). Outcome measures were completed at six intervals: three before and three after treatment initiation. Overall improvement in post-training scores was observed across all outcome measures, including the Graded Wolf Motor Function Test, Action Research Arm Test, and grip and pinch strength (p ≤ 0.02), except finger extension force. No significant change in spasticity was observed. Improvement in upper extremity capabilities is achievable for stroke survivors even with severe hand impairment through a novel intervention combining passive cyclical stretching and active-assisted task practice, a paradigm which could be readily incorporated into the clinic.

Translation, cultural adaptation and reliability of the brazilian version of the Graded Wolf Motor Function Test in adults with severe hemiparesis

Abstract Introduction : The Graded Wolf Motor Function Test (GWMFT) was developed as a modification of the Wolf Motor Function Test (WMFT), designed to address moderate-to-severe upper-extremity motor impairment, consequent to a stroke or brain injury, by combining time and quality of movement measures in both isolated movements and functional tasks. Objectives : To translate and adapt the GWMFT form and instructions manual to Brazilian Portuguese and evaluate the inter-rater reliability. Materials and methods : Ten individuals, mean age 53.2 ± 11.39 (range: 28-72) years and a mean time since stroke onset of 82.5 ± 85.83 (16-288) months participated in the study. After translation and cultural adaptation, two independent evaluators, based on the instructions manual information, administered GWMFT. Video observations were used to rate the time and the compensatory movements in the Functional Ability Scale (FAS). Intra-class Correlation Coefficients (ICCs) and Bland-Altman plots were calculated to examine the inter-rater reliability for performance time and FAS. Results : The translated and adapted version obtained a total ICC inter-rater time 0.99 (0.95-1.00), showing less reliability in the task of lifting a pen, with ICC = 0.71 (- 0.15-0.93). The ICC of the total FAS was 0.98 (0.92-0.99) and the task of elbow extension has shown the lowest ICC rate = 0.83 (0.31-0.96). Conclusion : The GWMFT scale reliability proved to be appropriate to evaluate the paretic upper limb in individuals with chronic hemiparesis post severe stroke.

Carryover Effects of Cyclical Stretching of the Digits on Hand Function in Stroke Survivors

ObjectiveTo investigate the longevity and cumulative impact of multiple sessions of passive, cyclical stretching of the digits on hand function in subacute stroke survivors. DesignBefore-after trial with intervention repeated on 3 consecutive days. SettingResearch laboratory. ParticipantsIndividuals (N=27) with moderate to severe hand impairment, 2 to 6 months (subacute, n=12) and >7 months (chronic, n=15) poststroke. InterventionsSubjects wore an actuated glove orthosis that cyclically moved their fingers and thumb from a relaxed/flexed posture into neutral extension for 30 minutes on 3 consecutive days. Main Outcome MeasuresThree hand-specific tasks from the Graded Wolf Motor Function Test, Box and Block Test (BBT), grip strength, and lateral pinch strength. Recordings were taken before stretching and at 3 time points, each separated by 30 minutes after completion of stretching on each day. ResultsSignificant improvement was observed immediately after the stretching for both groups. Improvements in the subacute group were largely maintained up to 1 hour poststretching, with significant carryover from day to day for some outcomes measures such as the BBT (P=.006) and grip strength (P=.012). In contrast, improvements after stretching for the chronic group were transient, with the changes largely dissipating over time and no significant cumulative effect across days. ConclusionsCyclical stretching of the digits had a lasting and reinforcing effect on improving hand motor control for subacute stroke survivors. Incorporation of cyclical stretching before active hand therapy may prove to be a beneficial treatment for stroke survivors, especially during the subacute phase of recovery.

Effect of Static versus Cyclical Stretch on Hand Motor Control in Subacute Stroke

Background and Purpose: The purpose of this study was to investigate the impact of passive static and cyclical stretching of the fingers on hand function in subacute stroke survivors. Participants: Thirteen stroke survivors, 2-5 months post-incident, with moderate to severe hand impairment took part in the study. Method: Each participant completed three separate sessions, separated by at least one week, consisting of 30 minutes of: static stretch of the digits, cyclical stretch, or rest. Stretching was performed by a powered glove orthosis (X-Glove). Outcome measures, comprised of three timed hand-specific tasks from the Graded Wolf Motor Function Test (GWMFT-Time), grip termination time (GTT), grip strength, and lateral pinch strength, were assessed at the beginning and end of each session. Change in outcome score during each session was used for analysis. Results: Data suggested a trend for improvement following stretching. Reduction in mean completion time for the GWMFT-Time after the cyclic stretching was 5 times greater than for the rest condition (P=0.010). After the static stretching, GTT was 31% faster than the mean pre-test times (P=0.055). Improvements in grip and pinch strength were also evident following the stretching interventions, although these changes did not reach statistical significance. Discussion and Conclusion: While more study is needed, cyclically stretching the finger muscles in the stroke hand appears to be a promising treatment for stroke survivors in the subacute phase of recovery. It may prove especially effective as an adjuvant therapy facilitating subsequent performance of active movement therapy. Future studies exploring the neural correlates of improvement are warranted.

Meaningful Task-Specific Training (MTST) for Stroke Rehabilitation: A Randomized Controlled Trial

Background/Objective: The upper extremity motor deficit is one of the functional challenges in post stroke patients. The objective of the present study was to evaluate the effectiveness of the meaningful task-specific training (MTST) on the upper extremity motor recovery during the subacute phase after a stroke. Method: This was a randomized, controlled, double-blinded trial in the neurology department of a university hospital and occupational therapy unit of a rehabilitation institute. A convenience sample of 103 people, 4 to 24 weeks (mean, 12.15 weeks) after the stroke, was randomized into 2 groups (MTST, 51; standard training group, 52). Subjects in the Brunnstrom stage of arm recovery of 2 to 5 were included in the study. Ninety-five participants completed the 8-week follow-up. Interventions: Participants were assigned to receive either the MTST or dose-matched standard training program based on the Brunnstrom stage and Bobath neurodevelopmental technique, 4 to 5 days a week for 4 weeks. Fugl-Meyer assessment (FMA), Action Research Arm Test (ARAT), Graded Wolf Motor Function Test (GWMFT), and Motor Activity Log (MAL) were outcome measures Results: The MTST group showed a positive improvement in the mean scores on the outcome measures at post and follow-up assessments in comparison to the control group. Further, statistically significant differences were observed in changes between the groups at post and follow-up assessment for FMA, ARAT, GWMFT, and MAL. Conclusion: The MTST produced statistically significant and clinically relevant improvements in the upper extremity motor recovery of the patients who had a subacute stroke.

A Pilot Study to Assess Use of Passive Extension Bias to Facilitate Finger Movement for Repetitive Task Practice After Stroke

Background and Purpose: The purpose of this study was to investigate whether active range of finger motion could be increased through the introduction of passive, external extension joint torques in stroke survivors. Participants: Five chronic stroke survivors with severe hand impairment resulting from hemiparesis took part in the study. Method: Participants completed 2 experimental sessions in which hand movement and function were assessed. In one session, they wore a custom orthotic glove (X-Glove) that passively supplied extension torques to the joints of the fingers. In the second session, they performed the same tasks as in the other session, but without the glove. Outcome measures consisted of active range of motion, distance of the fingertip from the hand, selected tasks from the Graded Wolf Motor Function Test (GWMFT), and the Box and Blocks (BB) test. Primary results with and without the glove were compared using paired t tests with a Bonferroni correction. Results: Active range of motion improved significantly by over 50%, from 4.4 cm to 6.7 cm, when the X-Glove was worn (P = .011). The distance of the fingertip from the metacarpophalangeal joint increased by an average of 2.2 cm for 4 of the subjects, although this change was not significant across all 5 subjects (P = .123). No significant differences were observed in the BB or GWMFT whether the X-Glove was worn or not. Discussion and Conclusion: Introduction of passive extension torque can improve active range of motion for the fingers, even in chronic stroke survivors with substantial hand impairment. The increased range of motion would facilitate therapeutic training of the hand, potentially even in the home environment, although the bulk of the orthosis should be minimized to facilitate interactions with real objects.

Transient Impact of Prolonged Versus Repetitive Stretch on Hand Motor Control in Chronic Stroke

Background and Purpose: The purpose of this study was to investigate the influence of prolonged and repetitive passive range of motion (PROM) stretching of the fingers on hand function in stroke survivors. Participants: Fifteen chronic stroke survivors with moderate to severe hand impairment took part in the study. Method: Participants underwent 3 experimental sessions consisting of 30 minutes of rest, prolonged, or repetitive stretching of the finger flexor muscles by a powered glove orthosis (X-Glove). Outcome measures, comprised of 3 selected tasks from the Graded Wolf Motor Function Test (GWMFT), grip strength, lateral pinch strength, and grip relaxation time, were recorded at the start and end of each session. Change in outcome score for each session was used for analysis. Results: Data suggested a trend for improvement following stretching, especially for the repetitive PROM case. For one GWMFT task (lift washcloth), the effect of stretching condition on performance time approached a statistical significance (P = .015), with repetitive PROM stretching producing the greatest mean reduction. Similarly, repetitive stretching led to a 12% ± 16% increase in grip strength, although this change was not statistically different across groups (P = .356); and grip termination time was reduced, albeit non-significantly, by 66% ± 133%. Conclusion: Repetitive PROM stretching exhibited trends to be more effective than prolonged stretching for improving hand motor control. Although the results were highly variable and the effects are undoubtedly transient, an extended period of repetitive PROM stretching may prove advantageous prior to hand therapy sessions to maximize treatment.

Effects of robotic‐aided rehabilitation on recovery of upper extremity function in chronic stroke: a single case study

The objective of the study was to examine the results of robotic therapy in a single client. A 48-year-old female client 15 months post-stroke, with right hemiparesis, received robotic therapy as an outpatient in a large Midwestern rehabilitation hospital. Robotic therapy was provided three times a week for 6 weeks. Robotic therapy consisted of goal-directed, robotic-aided reaching tasks to exercise the hemiparetic shoulder and elbow. No other therapeutic intervention for the affected upper extremity was provided during the study or 3 months follow-up period. The outcome measures included the Fugl-Meyer, graded Wolf motor function test (GWMFT), motor activity log, active range of motion and Canadian occupational performance measure. The participant made gains in active movement; performance; and satisfaction of functional tasks, GWMFT and functional use. Limitations involved in this study relate to the generalizability of the sample size, effect of medications, expense of robotic technologies and the impact of aphasia. Future research should incorporate functional use training along with robotic therapy.

A treatment for a chronic stroke patient with a plegic hand combining CI therapy with conventional rehabilitation procedures: Case report

Constraint-Induced Movement therapy (CI therapy) is a recognized rehabilitation approach for persons having stroke with mild to moderately severe motor upper extremity deficits. To date, no rehabilitation treatment protocol has been proven effective that addresses both motor performance and spontaneous upper extremity use in the life situation for chronic stroke participants having severe upper extremity impairment with no active finger extension or thumb abduction. This case report describes treatment of a chronic stroke participant with a plegic hand using a CI therapy protocol that combines CI therapy with selected occupational and physical therapy techniques. Treatment consisted of six sessions of adaptive equipment and upper extremity orthotics training followed by a three-week, six-hour daily intervention of CI therapy plus neurodevelopmental treatment. Outcome measures included the Motor Activity Log for very low functioning patients (Grade 5 MAL), upper extremity portion of the Fugl-Meyer Motor Assessment, Graded Wolf Motor Function Test - for very low functioning patients (gWMFT- Grade 5), and Modified Ashworth Scale. The participant showed improvement on each outcome measure with the largest improvement on the Grade 5 MAL. In follow-up, the participant had good retention of his gains in motor performance and use of his more affected arm for real world activities after 3 months; after a one-week brush-up at 3 months, and at one year post-treatment.

Constraint-Induced Movement Therapy After Stroke: Efficacy for Patients With Minimal Upper-Extremity Motor Ability

Bonifer NM, Anderson KM, Arciniegas DB. Constraint-induced movement therapy after stroke: efficacy for patients with minimal upper-extremity motor ability. Objective To examine the effects of constraint-induced movement therapy (CIMT) on chronic moderate-to-severe upper-extremity motor impairment after stroke. Design Within-subjects design; pre- and posttesting as well as 1-month follow-up. Setting Outpatient clinic within a rehabilitation hospital. Participants Twenty participants, each greater than 12 months poststroke. Intervention Three weeks of CIMT including restraint of the nonparetic upper extremity and 6 hours of training a day. Main Outcome Measures Fugl-Meyer Assessment (FMA), Graded Wolf Motor Function Test (GWMFT), and Motor Activity Log (MAL). Results There was a statistically significant effect of treatment on upper-extremity motor impairment as assessed by the FMA, the MAL, and the functional ability scale of the GWMFT. There was a trend toward an effect of CIMT on mean speed of performance on the GWMFT. Post hoc analysis showed significant differences between motor impairment scores between pretreatment and posttreatment assessments, and improvements in motor impairment scores remained stable 1 month after completion of formal treatment. Improvements appeared to be mostly in the use of the involved upper extremity for bimanual activities. Conclusions CIMT conferred significant changes in objective measures in subjects with chronic moderate-to-severe impairments after stroke. Additional studies of long-term benefits of this treatment on poststroke motor impairments and related functional disabilities are warranted.

Application of Constraint-Induced Movement Therapy for an Individual With Severe Chronic Upper-Extremity Hemiplegia

Constraint-induced movement therapy (CIMT) has been documented to improve motor function in the upper extremity of people with mild hemiparesis. The use of CIMT has not been documented for people with severe hemiparesis. This case report describes a CIMT program for an individual with severe upper-extremity deficits as a result of stroke. The client was a 53-year-old woman who had a stroke 15 years previously and had no isolated movement in her right upper extremity. The client completed a 3-week CIMT program during which she restrained her left upper extremity and participated in intensive training of her right upper extremity. Task practice and shaping were the primary techniques used for training. Increased scores were noted from pretreatment to posttreatment on the Motor Activity Log, Graded Wolf Motor Function Test (GWMFT), and Fugl-Meyer Evaluation of Physical Performance. Further progress on the GWMFT was noted at the 6-month follow-up. Fugl-Meyer test scores remained higher than at pretreatment, but Motor Activity Log scores returned to near baseline by the 6-month follow-up. The speed of performance on the GWFMT did not change. Although some scores increased, the client reported and demonstrated no progress in functional use of the involved upper extremity at the end of the program. This case report describes the use of CIMT with an individual who had severe chronic motor deficits as a result of stroke. Further investigation of CIMT, as well as investigation of CIMT in combination with other motor recovery interventions, is warranted.