Karen Brunton

Progressive Resistance Strengthening Exercises After Stroke: A Single-Blind Randomized Controlled Trial

OBJECTIVE To determine the effectiveness of progressive resistance strengthening exercises to improve gross motor function and walking in patients receiving intensive rehabilitation after stroke. DESIGN Randomized controlled trial. SETTING Five inpatient rehabilitation programs affiliated with teaching hospitals. PARTICIPANTS Inclusion criteria included less than 6 months poststroke and recovery of the leg stages 3 to 5 on the Chedoke-McMaster Stroke Assessment (CMSA). INTERVENTIONS Both groups received conventional physical therapy programs. In addition, the experimental group performed 9 lower-extremity progressive resistance exercises 3 times a week for the duration of their stay, whereas the control group did the same exercises and for the same duration but without resistance. MAIN OUTCOME MEASURES The Disability Inventory of the CMSA and the 2-minute walk test (2MWT) at baseline, 4 weeks, discharge, and 6 months after discharge. RESULTS Over the length of stay, the rate of change in the Disability Inventory was.27 points per day in the experimental group and.29 points per day in the control group; the between-group difference was -.02 points per day (95% confidence interval [CI], -.10 to.06; P=.62). At discharge, the rate of change in the 2MWT was -.01 m in the experimental group and.15m in the control group; the between-group difference was -.16 m (95% CI, -.37 to.05; P=.14). CONCLUSIONS Progressive resistance strengthening exercises as applied in our study were not effective when compared with the same exercises given without resistance.

Immediate Effects of Cane Use on Gait Symmetry in Individuals with Subacute Stroke

PURPOSE In stroke rehabilitation, there is a lack of consensus regarding the effects of cane use on gait symmetry. This study aimed to evaluate the immediate effects on gait symmetry of ambulating with a standard cane and a quad cane among individuals with subacute stroke. METHOD A within-subject experimental design was used to evaluate symmetry in in-patients with subacute stroke during ambulation on a pressure-sensitive walkway for three task conditions: with no cane, with standard single-point cane, and with quad cane. RESULTS Fourteen patients were classified as symmetric (n = 5) or asymmetric (n = 9) based on their gait symmetry while walking without an aid. Overall, use of a standard cane during ambulation significantly improved symmetry in asymmetric patients (p = 0.028). In contrast, the use of a quad cane did not improve symmetry (p = 0.36). There was no effect on symmetry in symmetric patients with use of either a standard cane (p = 0.88) or a quad cane (p = 0.32). CONCLUSIONS These results indicate that the immediate effect of a standard cane is to improve symmetry in patients with subacute stroke who have asymmetric gait. Future studies are required to determine the long-term effects of canes on gait symmetry in this population.

Training Rapid Stepping Responses in an Individual With Stroke

Background and Purpose Compensatory stepping reactions are important responses to prevent a fall following a postural perturbation. People with hemiparesis following a stroke show delayed initiation and execution of stepping reactions and often are found to be unable to initiate these steps with the more-affected limb. This case report describes a targeted training program involving repeated postural perturbations to improve control of compensatory stepping in an individual with stroke. Case Description Compensatory stepping reactions of a 68-year-old man were examined 52 days after left hemorrhagic stroke. He required assistance to prevent a fall in all trials administered during his initial examination because he showed weight-bearing asymmetry (with more weight borne on the more-affected right side), was unable to initiate stepping with the right leg (despite blocking of the left leg in some trials), and demonstrated delayed response times. The patient completed 6 perturbation training sessions (30–60 minutes per session) that aimed to improve preperturbation weight-bearing symmetry, to encourage stepping with the right limb, and to reduce step initiation and completion times. Outcomes Improved efficacy of compensatory stepping reactions with training and reduced reliance on assistance to prevent falling were observed. Improvements were noted in preperturbation asymmetry and step timing. Blocking the left foot was effective in encouraging stepping with the more-affected right foot. Discussion This case report demonstrates potential short-term adaptations in compensatory stepping reactions following perturbation training in an individual with stroke. Future work should investigate the links between improved compensatory step characteristics and fall risk in this vulnerable population.

Longitudinal changes in poststroke spatiotemporal gait asymmetry over inpatient rehabilitation.

Background. Little information exists about longitudinal changes in spatiotemporal gait asymmetry during rehabilitation, despite it being a common goal. Objectives. To describe longitudinal changes in spatiotemporal gait asymmetry over rehabilitation and examine relationships with changes in other poststroke impairments. Methods. Retrospective chart reviews were conducted for 71 stroke rehabilitation inpatients. Admission and discharge measures of spatiotemporal symmetry, velocity, motor impairment, mobility and balance were extracted and change scores were calculated. Relationships between changes in spatiotemporal symmetry and other change scores were investigated with Spearman correlations. Individuals were divided into four groups (worse, no change-symmetric, no change-asymmetric, improved) based on (1) symmetry/asymmetry at admission and (2) symmetry change scores >minimal detectable change. Differences in change scores between groups were investigated with analyses of covariance using the admission value as a covariate. Results. At admission, 59% and 49% of individuals were asymmetric in swing time and step length, respectively. Of these individuals, 21% and 14% improved swing symmetry or step symmetry, respectively. In contrast, 30% improved gait velocity, 62% improved functional balance and 73% improved functional mobility. Associations between change in swing symmetry and change in paretic limb weight bearing in standing and change in step symmetry and change in velocity were significant. There were no significant differences in change scores between the symmetry groups. Conclusions. The majority of asymmetric stroke patients did not improve spatiotemporal asymmetry during rehabilitation despite the fact that velocity, balance and functional mobility improved. Future work should investigate other factors associated with improved spatiotemporal symmetry and interventions to specifically improve it.

Use of Accelerometer-Based Feedback of Walking Activity for Appraising Progress With Walking-Related Goals in Inpatient Stroke Rehabilitation A Randomized Controlled Trial

Background. Regaining independent ambulation is important to those with stroke. Increased walking practice during “down time” in rehabilitation could improve walking function for individuals with stroke. Objective. To determine the effect of providing physiotherapists with accelerometer-based feedback on patient activity and walking-related goals during inpatient stroke rehabilitation. Methods. Participants with stroke wore accelerometers around both ankles every weekday during inpatient rehabilitation. Participants were randomly assigned to receive daily feedback about walking activity via their physiotherapists (n = 29) or to receive no feedback (n = 28). Changes in measures of daily walking (walking time, number of steps, average cadence, longest bout duration, and number of “long” walking bouts) and changes in gait control and function assessed in-laboratory were compared between groups. Results. There was no significant increase in walking time, number of steps, longest bout duration, or number of long walking bouts for the feedback group compared with the control group (P values > .20). However, individuals who received feedback significantly increased cadence of daily walking more than the control group (P = .013). From the in-laboratory gait assessment, individuals who received feedback had a greater increase in walking speed and decrease in step time variability than the control group (P values < .030). Conclusion. Feedback did not increase the amount of walking completed by individuals with stroke. However, there was a significant increase in cadence, indicating that intensity of daily walking was greater for those who received feedback than the control group. Additionally, more intense daily walking activity appeared to translate to greater improvements in walking speed.

Integrating Aerobic Training Within Subacute Stroke Rehabilitation: A Feasibility Study

Background Aerobic activity positively affects patients recovering from stroke and is part of best practice guidelines, yet this evidence has not been translated to routine practice. Objective The objective of this study was to evaluate the feasibility of a model of care that integrated aerobic training in an inpatient rehabilitation setting for patients in the subacute stage of stroke recovery. Key elements of the program were personalized training prescription based on submaximal test results and supervision within a group setting. Design This was a prospective cohort study. Methods Participants (N=78) completed submaximal exercise testing prior to enrollment, and the test results were used by their treating physical therapists for exercise prescription. Feasibility was evaluated using enrollment, class attendance, adherence to prescription, and participant perceptions. Results Overall, 31 patients (40%) were referred to and completed the exercise program. Cardiac comorbidities were the main reason for nonreferral to the fitness group. Program attendance was 77%; scheduling conflicts were the primary barrier to participation. The majority of participants (63%) achieved 20 minutes of continuous exercise by the end of the program. No adverse events were reported, all participants felt they benefited from the program, and 80% of the participants expressed interest in continuing to exercise regularly after discharge. Limitations Cardiac comorbidities prevented enrollment in the program for 27% of the admitted patients, and strategies for inclusion in exercise programs in this population should be explored. Conclusions This individualized exercise program within a group delivery model was feasible; however, ensuring adequate aerobic targets were met was a challenge, and future work should focus on how best to include individuals with cardiac comorbidities.

Using wireless technology in clinical practice: does feedback of daily walking activity improve walking outcomes of individuals receiving rehabilitation post-stroke? Study protocol for a randomized controlled trial

BackgroundRegaining independent ambulation is the top priority for individuals recovering from stroke. Thus, physical rehabilitation post-stroke should focus on improving walking function and endurance. However, the amount of walking completed by individuals with stroke attending rehabilitation is far below that required for independent community ambulation. There has been increased interest in accelerometer-based monitoring of walking post-stroke. Walking monitoring could be integrated within the goal-setting process for those with ambulation goals in rehabilitation. The feedback from these devices can be downloaded to a computer to produce reports. The purpose of this study is to determine the effect of accelerometer-based feedback of daily walking activity during rehabilitation on the frequency and duration of walking post-stroke.MethodsParticipants will be randomly assigned to one of two groups: feedback or no feedback. Participants will wear accelerometers daily during in- and out-patient rehabilitation and, for participants in the feedback group, the participants’ treating physiotherapist will receive regular reports of walking activity. The primary outcome measures are the amount of daily walking completed, as measured using the accelerometers, and spatio-temporal characteristics of walking (e.g. walking speed). We will also examine goal attainment, satisfaction with progress towards goals, stroke self-efficacy, and community-integration.DiscussionIncreased walking activity during rehabilitation is expected to improve walking function and community re-integration following discharge. In addition, a focus on altering walking behaviour within the rehabilitation setting may lead to altered behaviour and increased activity patterns after discharge.Trial registrationClinicalTrials.gov NCT01521234

Partnering to Increase Access to Community Exercise Programs for People With Stroke, Acquired Brain Injury, and Multiple Sclerosis

BACKGROUND The purpose of this article is to describe the development and evaluation of a task-oriented group exercise program, delivered through a municipal recreation program, for community-dwelling people with neurological conditions. METHODS Physical therapists (PTs) at a rehabilitation hospital partnered with a municipal recreation provider to develop and evaluate a 12-week exercise program for people with stroke, acquired brain injury, and multiple sclerosis at 2 community centers. Fitness instructors who were trained and supported by PTs taught 1-hour exercise classes twice a week. In a program evaluation of the safety, feasibility and effects of the program, standardized measures of physical function were administered before and after the program. RESULTS Fourteen individuals (mean age: 63 years) participated and attended 92% of exercise classes, on average. Two minor adverse events occurred during 293 attendances. Improvement in mean score on all measures was observed. In people with stroke, a statistically significant improvement in mean Berg Balance Scale (mean ± SD change = 3 ± 2 points, P = .016, n = 7) and 6-minute walk test scores (change = 26 ± 26 m, P = .017, n = 9) was observed. CONCLUSIONS This model of exercise delivery provides people with neurological conditions with access to a safe, feasible and potentially beneficial exercise program in the community.

Clinical implementation of a reactive balance control assessment in a sub-acute stroke patient population using a 'lean-and-release' methodology.

Reactive balance control, specifically performance of rapid stepping responses, is associated with falls, but not routinely assessed in clinical practice. Challenges to clinical assessment may include a lack of available methods that are safe, standardized and able to quantify the balance responses. We implemented a reactive balance control assessment, using lean-and-release methodology, in an inpatient stroke rehabilitation program. Through retrospective chart review of all admissions (n=183) over a 1-year period, we evaluated the clinical uptake and patient-specific factors associated with its use. Seventy-seven of 183 (42%) patients were administered the assessment, on average, 16.2 (SD 13.1) days post-admission. Patients who received the assessment were younger, at an earlier time post-stroke, with a shorter rehabilitation length of stay, with less lower-limb impairment, higher levels of functional balance, less motor and cognitive impairment, greater recovery of functional mobility, and were more likely to have the capacity to walk (all measures p<0.0001), compared to those who did not receive the assessment. This study demonstrates the potential for clinical uptake of the lean-and-release assessment among patients with stroke, who are progressing in their functional and mobility status over the course of their inpatient rehabilitation. However, the results suggest limitations in application to patients with greater disability or who demonstrate slower recovery of functional mobility. Ongoing research is required to develop clinical approaches to reactive balance control assessment that are effective, efficient and relevant to clinical populations and feasible for clinical practice.

Incorporating Research Technology into the Clinical Assessment of Balance and Mobility: Perspectives of Physiotherapists and People with Stroke

PURPOSE To describe the perspectives of people with stroke and their physiotherapists on the use of biomechanics technology to assess balance and mobility. METHODS This qualitative study used semi-structured interviews with patients with stroke and a focus group with their physiotherapists. Coding of interview and focus-group data used a line-by-line inductive approach, with qualitative software to develop codes into themes. RESULTS The quantitative data from the assessment were seen as beneficial to providing patients with insight into balance and mobility problems. Physiotherapists found that the assessment confirmed clinical reasoning and aided in precise evaluation of progress but expressed mixed opinions as to whether treatment choice was influenced. Patients would have liked more communication regarding the purpose of the assessment. Patients also stated that trust in their physiotherapists helped them overcome anxieties and that confidence was gained through exposure to more challenging balance assessments. Physiotherapists advocated for the use of a harness system to safely incorporate reactive balance control assessment and training into practice. CONCLUSION Both patients and therapists saw value in the quantitative data provided by the assessment. Regardless of the technology used, patients value a strong physiotherapist-patient relationship. Ongoing collaboration between clinicians and researchers should guide the evolution of technology into clinically useful tools.