Medical Rehabilitation: Guidelines to Advance the Field With High-Impact Clinical Trials

Advancements and Challenges in Exercise Training for Multiple Sclerosis: Comprehensive Review and Future Directions for Randomized Controlled Trials

Exercise training represents a health behavior for the treatment and management of the multi-faceted manifestations of multiple sclerosis (MS). This paper provides a comprehensive overview of evidence from randomized controlled trials (RCTs) regarding benefits, safety, participation, and guidelines for exercise training in MS, based on systematic reviews and meta-analyses. The paper then provides our opinions based on extensive experience regarding challenges for improving and expanding future RCTs that will advance our understanding of exercise training in MS. The comprehensive review of evidence from RCTs indicates that exercise training yields substantial improvements in aerobic and muscle fitness, mobility, fatigue and depression, quality of life, and participation outcomes. There is a non-significant increase in the risk of adverse events or serious adverse events with exercise training compared with control conditions or healthy populations. Rates of adherence and compliance with exercise training (i.e., participation) approximate 80% and 70%, respectively. The current prescriptive guidelines suggest 2-3 days per week of aerobic and resistance exercise training as the minimal dose for safely benefiting from exercise training in MS. We propose 10 important topics as avenues for expanding the body of research and improving its scope for evidence-based practice in MS. Overall, the research on exercise training in MS is strong, but it can get stronger. The expansion and advancement of evidence are critical for moving exercise training into the clinical armamentarium of MS disease treatment and management.

Comparative Efficacy of High-Intensity Training Versus Conventional Training in Individuals With Chronic Traumatic Brain Injury: A Pilot Randomized Controlled Study

Numerous studies have evaluated the efficacy of interventions to improve locomotion after acute-onset brain injury, although most focus on patients with stroke, with less attention toward traumatic brain injury (TBI). For example, a number of studies in patients post-stroke have evaluated the effects of high-intensity training (HIT) attempting to maximize stepping practice, while no studies have attempted this intervention in patients with TBI. The purpose of this blinded-assessor randomized trial was to evaluate the effects of HIT focused on stepping practice versus conventional training on walking and secondary outcomes in individuals with TBI. Using a crossover design, ambulatory participants with TBI >6-months duration performed HIT focused on stepping in variable contexts (overground, treadmill, stairs) or conventional training for up to 15 sessions over five weeks, with interventions alternated >4 weeks later. HIT focused on maximizing stepping practice while trying to achieve higher cardiovascular intensities (>70% heart rate reserve), while conventional training focused on impairment-based and functional exercises with no restrictions on intensities achieved. Greater increases in 6-min walk test and peak treadmill speed during graded exercise testing were observed after HIT versus conventional training, with moderate associations between differences in stepping practice and outcomes. Greater gains were also observed in estimates of aerobic capacity and efficiency after HIT, with additional improvements in selected cognitive assessments. The present study suggests that the amount and intensity of stepping practice may be important determinants of improved locomotor outcomes in patients with chronic TBI, with possible secondary benefits on aerobic capacity/efficiency and cognition. Clinical Trial Registration-URL: https://clinicaltrials.gov/; Unique Identifier: NCT04503473.

Do people with epilepsy want to participate in an exercise intervention randomized controlled trial? - Results of a brief survey and its preliminary application

Our goal was to survey people with epilepsy (PWE) about their interest in and factors that may influence willingness and ability to participate in an exercise randomized controlled trial (RCT). A brief survey was administered to 100 PWE asking if they would take part in a hypothetical 6-week exercise intervention RCT. Follow-up questions queried reasons for and against participation and why participation would be difficult. Sixty-nine percent of respondents indicated willingness to participate. The top reason for participation was "to improve overall health with exercise" (n = 49). The top reason for why participation would be difficult was they "do not have a reliable source of transportation" (n = 27). The top reason for not participating was "not interested in research participation" (n = 19). Preliminary results were used to budget for transportation in a prospective RCT (NCT04959019). Of the first 27 PWE enrolled (63 % female; 44 % African American/Black), six (50 % female; 50 % African American/Black) have used the transportation service. The majority of PWE surveyed were interested in participating in an exercise RCT, but some indicated barriers. Accommodating transportation in an ongoing RCT has facilitated recruitment of PWE who would otherwise not be able to participate. Barriers to participation should be accounted for when designing studies.

The Effect of Robot-Assisted Training on Arm Function, Walking, Balance, and Activities of Daily Living After Stroke: A Systematic Review and Meta-Analysis

This meta-analysis aimed to compare the effects of robot-assisted training (RAT) with those of conventional therapy (CT), considering the potential sources of heterogeneity in the previous studies. We searched three international electronic databases (MEDLINE, Embase, and the Cochrane Library) to identify relevant studies. Risk of bias assessment was performed using the Cochrane's Risk of Bias 1.0 tool. The certainty of the evidence was evaluated using the Grading of Recommendations, Assessment, Development, and Evaluations method. The meta-analyses for each outcome of the respective domains were performed using 24 randomized controlled trials (RCTs) on robot-assisted arm training (RAAT) for arm function, 7 RCTs on RAAT for activities of daily living (ADL), 12 RCTs on robot-assisted gait training (RAGT) for balance, 6 RCTs on RAGT for walking, and 7 RCTs on RAGT for ADL. The random-effects model for the meta-analysis revealed that RAAT has significant superiority over CT in improving arm function, and ADL. We also showed that RAGT has significant superiority over CT in improving balance. Our study provides high-level evidence for the superiority of RAT over CT in terms of functional recovery after stroke. Therefore, physicians should consider RAT as a therapeutic option for facilitating functional recovery after stroke.

Randomized controlled trial of the behavioral intervention for increasing physical activity in multiple sclerosis project: Secondary, patient-reported outcomes

BACKGROUND

We undertook a randomized controlled trial (RCT) that investigated the effectiveness of a theory-based, Internet-delivered, behavioral intervention focusing on physical activity promotion for immediate and sustained improvements in secondary, patient-reported outcomes (PROs) of function, symptoms, and quality of life (QOL) in multiple sclerosis (MS).

METHOD

Persons with MS (N = 318) were recruited from throughout the United States and randomized into behavioral intervention (n = 159) or attention/social contact control (n = 159) conditions. The conditions were administered over a 6-month period by persons who were uninvolved in screening, recruitment, random assignment, and outcome assessment. There was a 6-month follow-up period without intervention access/content. We collected PROs data every 6 months over the 12-month period. The PROs included validated measures of walking and cognitive function, symptoms of fatigue, depression, anxiety, pain, and sleep quality, and QOL. The data analysis involved a modified intent-to-treat approach using a linear mixed model in JMP Pro 16.0.

RESULTS

There was a significant group by time interaction on Fatigue Severity Scale scores (p < .01) and physical subscale scores of the Modified Fatigue Impact Scale (p < .05). Scores on both measures decreased immediately after the 6-month period in the behavioral intervention compared with no change in the control condition, and this differential pattern of change was sustained over the 6-month follow-up. There were no group by time interactions on the other PROs.

DISCUSSION

This study provides evidence for the effectiveness of a novel, widely scalable approach for physical activity promotion and fatigue management in persons with MS, yet this must be contextualized with the absence of improvements in the other PROs.

Virtual reality in post-stroke neurorehabilitation - a systematic review and meta-analysis

BACKGROUND

Stroke is a neurological disorder and one of the leading causes of disability worldwide. The patient may lose the ability to adequately move the extremities, perceive sensations, or ambulate independently. Recent experimental studies have reported the beneficial influence of virtual reality training strategies on improving overall functional abilities for stroke survivors.

METHODS

Conducted a systematic review of the literature using the following keywords to retrieve the data: stroke, virtual reality, motor deficits, neurorehabilitation, cognitive impairments, and sensory deficits. A random-effect meta-analysis was performed for seven scales - one cognitive (MMSE) and six motor (Fugl-Meyer, Berg Balance Scale, Time up and go, Wolf motor function, 10 m walk, Brunnstrom score).

OBJECTIVE

To organize and compare all the available data regarding the effectiveness of virtual reality for stroke rehabilitation.

RESULTS

This literature reviewed 150 studies and included 46 for qualitative and 27 for quantitative analysis. There was no statistically significant difference between groups in MMSE score (MD = 0.24, 95%CI = ((-0.42) -(0.9)), p = .47, I² = 0%) and Fugl-Meyer score (MD = (-0.38), 95%CI = ((-12.88)-(12.11)), p = .95, I² = 98%) . The statistical significance was not reached in any of the other outcomes.

CONCLUSIONS

This review supports that stroke rehabilitation programs incorporating virtual reality are associated with improved functional outcomes, but there is no statistically significant difference compared to standard therapy.

Lessons learned from clinical trials of exercise and physical activity in people with MS - guidance for improving the quality of future research

The body of research on exercise and physical activity among persons with multiple sclerosis(MS) has expanded rapidly in quantity, but not necessarily quality, over the past 20+ years. There is evidence for beneficial effects of exercise and physical activity on immune cells and neurotrophic factors, brain structure and function, walking and cognitive performance, fatigue, depression, and pain, and quality of life among persons with MS. Nevertheless, there is heterogeneity in the outcomes of exercise and physical activity, and a recognition of substantial challenges for improving the effectiveness of those behaviors in MS. To move the field forward, members of the National MS Society physical wellness research working-group pooled collective experiences for identifying challenges, logistic complexities, and opportunities for researchers in designing and conducting interventions of exercise and physical activity among persons with MS. We examined the scope of our experiences and identified collective "lessons learned" regarding the behaviors themselves; study design features and stage of research; study setting, safety, and sample selection; and implementation of randomized controlled trials(RCTs) and treatment fidelity. This paper provides a resource that can inform researchers, particularly new investigators or established investigators transitioning into MS, on conducting high-quality RCTs on exercise and physical activity in MS.

Treatment Trials in Disorders of Consciousness: Challenges and Future Directions

The evidence base supporting treatment interventions for patients with disorders of consciousness is limited, and rigorous treatment trials are needed to guide future management of this complex patient population. There are many potential study designs that can be employed to develop this evidence, but the process of selecting the optimal study design is challenging. This article reviews common obstacles that impede research progress in this population and a range of study designs that may be employed. In addition, we consider how the particular practical and scientific obstacles may drive selection of the optimal design and, in particular, how the optimal design changes as treatment research proceeds along the translational continuum from mechanistic discovery to real-world clinical impact.

Behavior Change Interventions for Health Promotion in Physical Therapist Research and Practice: An Integrative Approach

There is an increasing focus on health promotion in physical therapist research and practice. A clinical model (Health-Focused Physical Therapy Model) was developed for identifying major steps in the delivery of health promotion focusing on adoption of healthy lifestyle behaviors. One of the primary steps within this model is the design and delivery of behavior change interventions. Such interventions involve coordinated sets of activities that target change in a specific pattern of unhealthy behavior (eg, physical inactivity, smoking). This Perspective contends that the science and practice of behavior change interventions can be significantly advanced in the field of physical therapy (implementation science) through the integration of behavior change frameworks and techniques within the context of an experimental medicine approach for health behavior change. This perspective presents the integration of the Theoretical Domains Framework, the Behavior Change Wheel, including the Capability Opportunity Motivation-Behavior core system, and the Behavior Change Technique Taxonomy as a comprehensive approach for designing and delivering behavior change interventions in physical therapy. An experimental medicine approach is described, outlining a 4-step process in the design, delivery, and evaluation of behavior change interventions that can be applied to health promotion in physical therapist research and practice. The proposed integrative approach can advance public health and health promotion through healthy lifestyle behavior change in the field of physical therapy.

An Analysis of the Inclusion of Women, Older Individuals, and Racial/Ethnic Minorities in Rehabilitation Clinical Trials

OBJECTIVE

Our objective was to investigate whether women, people 65 yrs and older, or individuals who identify with racial and/or ethnic minority groups, were underrepresented among participants in rehabilitation clinical trials.

DESIGN

This is a cross-sectional study of completed rehabilitation clinical trials investigating the number and percentage of women, older adults, and racial and/or ethnic minorities enrolled in rehabilitation clinical trials between January 1, 2011, and January 1, 2020. Secondary outcome measures were inclusion by diagnostic group, as well as International Classification of Functioning, Disability and Health category, and intervention by diagnostic group.

RESULTS

Of the 108 studies meeting inclusion criteria, a majority (69%) were based in the United States. Stroke was the most frequent diagnostic group, followed by musculoskeletal conditions. Ninety-six percent of the United States-based trials included at least one female participant in their study, but among specific diagnostic groups, this ranged from 5% to 73%. Age information was reported inconsistently; however, of the trials reporting age, 100% of cardiac trials included older adults, whereas no spinal cord injury (SCI) trials included them. Among trials based in the United States reporting race, 70% of participants were White, followed by 20% Black or African American and 1% Asian. Among trials based in the United States reporting ethnicity, Hispanic or Latino participants were underrepresented overall and among each diagnostic group.

CONCLUSIONS

In this study, we found that among participants of rehabilitation clinical trials women, older individuals, and racial/ethnic minorities were generally underrepresented. In contrast, Black or African American participants were overrepresented with the exception of cardiac trials. An important finding was that many trials did not report age and/or race/ethnicity. Investigators should aim to include underrepresented populations and improve reporting.

Physical Activity Together for People With Multiple Sclerosis and Their Care Partners: Protocol for a Feasibility Randomized Controlled Trial of a Dyadic Intervention

Background

Physical activity (PA) is beneficial for all people; however, people affected by multiple sclerosis (MS) find regular PA challenging. These people may include individuals with advanced disabilities and their care partners.

Objective

The objective of this study is to determine the feasibility of a dyadic PA intervention for people with advanced MS and their care partners.

Methods

This study is a randomized controlled feasibility trial of a 12-week intervention, with 1:1 allocation into an immediate intervention condition or delayed control condition. A target of 20 people with MS–care partner dyads will be included. The outcomes will be indicators of process, resources, management, and scientific feasibility. Participant satisfaction with the intervention components will be evaluated using a satisfaction survey. The subjective experience of participation in the study will be explored using semistructured interviews.

Results

The project is funded by the Consortium of Multiple Sclerosis Centers. This protocol was approved by the Ottawa Hospital Research Ethics Board (20190329-01H) and the University of Ottawa Research Ethics Board (H-09-19-4886). The study protocol was registered with ClinicalTrials.gov in February 2020. The findings of this feasibility trial will be disseminated through presentations at community events to engage the MS population in the interpretation of our results and in the next steps. The results will also be published in peer-reviewed journals and presented to the scientific community at national and international MS conferences.

Conclusions

The data collected from this feasibility trial will be used to refine the intervention and materials in preparation for a pilot randomized controlled trial.

Trial Registration

ClinicalTrials.gov NCT04267185; https://clinicaltrials.gov/ct2/show/NCT04267185.

International Registered Report Identifier (IRRID)

PRR1-10.2196/18410

Leadership of the ultimate interdisciplinary team: Rehabilitation science at NIH

BACKGROUND

Support for rehabilitation research at the National Institutes of Health (NIH) is robust and evolving. Since the time of its Blue Ribbon Panel on Rehabilitation Research, NIH has participated in several initiatives to coordinate the science and advance the field.

DISCUSSION

Collaborative teams must continue to address key limitations in the field, including the desire for broad application of rehabilitation interventions, the need for basic science and translational research, the support of clinical trials and standard approaches, and the integration of technology.

CONCLUSION

Rehabilitation medicine is poised for critical advancements if interdisciplinary teams continue to work collaboratively to understand and address the needs of people with temporary or permanent functional limitations.

Study protocol: improving cognition in people with progressive multiple sclerosis: a multi-arm, randomized, blinded, sham-controlled trial of cognitive rehabilitation and aerobic exercise (COGEx)

BACKGROUND

Cognitive dysfunction affects up to 70% of people with progressive MS (PMS). It can exert a deleterious effect on activities of daily living, employment and relationships. Preliminary evidence suggests that performance can improve with cognitive rehabilitation (CR) and aerobic exercise (EX), but existing data are predominantly from people with relapsing-remitting MS without cognitive impairment. There is therefore a need to investigate whether this is also the case in people with progressive forms of the disease who have objectively identified cognitive impairment. It is hypothesized that CR and EX are effective treatments for people with PMS who have cognitive impairment, in particular processing speed (PS) deficits, and that a combination of these two treatments is more effective than each individual treatment given alone. We further hypothesize that improvements in PS will be associated with modifications of functional and/or structural plasticity within specific brain networks/regions involved in PS measured with advanced MRI techniques.

METHODS

This study is a multisite, randomized, double-blinded, sham controlled clinical trial of CR and aerobic exercise. Three hundred and sixty subjects from 11 sites will be randomly assigned into one of four groups: CR plus aerobic exercise; CR plus sham exercise; CR sham plus aerobic exercise and CR sham plus sham exercise. Subjects will participate in the assigned treatments for 12 weeks, twice a week. All subjects will have a cognitive and physical assessment at baseline, 12 weeks and 24 weeks. In an embedded sub-study, approximately 30% of subjects will undergo structural and functional MRI to investigate the neural mechanisms underlying the behavioral response. The primary outcome is the Symbol Digit Modalities Test (SDMT) measuring PS. Secondary outcome measures include: indices of verbal and non-verbal memory, depression, walking speed and a dual cognitive-motor task and MRI.

DISCUSSION

The study is being undertaken in 6 countries (11 centres) in multiple languages (English, Italian, Danish, Dutch); with testing material validated and standardized in these languages. The rationale for this approach is to obtain a robustly powered sample size and to demonstrate that these two interventions can be given effectively in multiple countries and in different languages.

TRIAL REGISTRATION

The trial was registered on September 20th 2018 at www.clinicaltrials.gov having identifier NCT03679468. Registration was performed before recruitment was initiated.

Moving exercise research in multiple sclerosis forward (the MoXFo initiative): Developing consensus statements for research

Exercise as a subset of physical activity is a cornerstone in the management of multiple sclerosis (MS) based on its pleotropic effects. There is an exponential increase in the quantity of research on exercise in MS, yet a number of barriers associated with study content and quality hamper rapid progress in the field. To address these barriers and accelerate discovery, a new international partnership of MS-related experts in exercise has emerged with the goal of advancing the research agenda. As a first step, the expert panel met in May 2018 and identified the most urgent areas for moving the field forward, and discussed the framework for such a process. This led to identification of five themes, namely "Definitions and terminology," "Study methodology," "Reporting and outcomes," "Adherence to exercise," and "Mechanisms of action." Based on the identified themes, five expert groups have been formed, that will further (a) outline the challenges per theme and (b) provide recommendations for moving forward. We aim to involve and collaborate with people with MS/MS organizations (e.g. Multiple Sclerosis International Federation (MSIF) and European Multiple Sclerosis Platform (EMSP)) in all of these five themes. The generation of this thematic framework with multi-expert perspectives can bolster the quality and scope of exercise studies in MS that may ultimately improve the daily lives of people with MS.

Advances and challenges in stroke rehabilitation

Stroke remains a leading cause of adult disability and the demand for stroke rehabilitation services is growing. Substantial advances are yet to be made in stroke rehabilitation practice to meet this demand and improve patient outcomes relative to current care. Several large intervention trials targeting motor recovery report that participants' motor performance improved, but to a similar extent for both the intervention and control groups in most trials. These neutral results might reflect an absence of additional benefit from the tested interventions or the many challenges of designing and doing large stroke rehabilitation trials. Strategies for improving trial quality include new approaches to the selection of patients, control interventions, and endpoint measures. Although stroke rehabilitation research strives for better trials, interventions, and outcomes, rehabilitation practices continue to help patients regain independence after stroke.