Evaluating Intervention Responsiveness in People With Multiple Sclerosis
|Study Design:||Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Evaluating Intervention Responsiveness in People With Multiple Sclerosis|
- Change in maximal voluntary contraction of the hip flexors from baseline to end of training and to post-training [ Time Frame: Participants are assessed at baseline (visit 1, enrollment), end of training (visit 2, week 12) and post-training (visit 3, week 24). ] [ Designated as safety issue: No ]Here, we will assess whether the degree of a person's white matter integrity (i.e. for tracts of interest as measured from MRI) predicts their ability to benefit from exercise. Our prediction is that those individuals with preserved white matter integrity will show the greatest improvement in hip flexor strength.
|Study Start Date:||April 2012|
|Estimated Study Completion Date:||September 2015|
|Estimated Primary Completion Date:||September 2015 (Final data collection date for primary outcome measure)|
Individuals with multiple sclerosis and age and gender matched healthy controls will participate in a supervised exercise program for 12 weeks.
Behavioral: progressive resistance training
The exercise program uses guided progressive resistance training to provide an individualized program of strength training. The progressive resistance training intervention will consist of 12 weeks of guided resistance training twice weekly; in addition, subjects will be instructed to do one day of progressive resistance training at the home weekly.
Multiple sclerosis (MS) is a chronic inflammatory disorder that damages myelin sheaths and axons in the brain and spinal cord. Within ten years of being diagnosed with MS, a majority of people will experience disability, most often walking impairments. The currently available pharmacologic treatments offer protection from new attacks but do not help with recovery; thus, in many cases the only hope for improvement, is through physical rehabilitation.
Rehabilitative interventions, such as progressive resistance training (PRT), have been shown to improve strength and sometimes walking in many individuals with MS. However, there are also many individuals who do not respond, which tends to be ignored in the literature. In addition, most intervention studies measure the primary impairment (e.g, strength) with little or no consideration for other impairments (e.g., sensory loss) and any effects on more complicated movements (e.g. standing, or changing direction). Since MS is so heterogeneous, it would be helpful to know which individuals are likely to benefit from rehabilitation.
Standard MS care uses MRI for diagnosis, identification of inflammatory lesions, and determination of treatment efficacy. Conventional rehabilitation relies on clinical judgment, rating scales and impairment measures to determine treatment efficacy. The investigators would like to understand how behavioral impairments and MRI findings relate to each other, and predict rehabilitation potential for people with MS. The investigators have previously shown that damage measured using tract specific MRI, specifically magnetization transfer (MTI) and diffusion tensor imaging (DTI), correlates with physical impairments in individuals with MS. Here the investigators propose to determine whether measures of clinical impairment and tract specific MRI can improve our ability to predict who will respond best to a PRT exercise intervention by improving functional movement. The investigators will perform a PRT intervention. The investigators will measure sensory and motor impairments and walking ability before and after the intervention. MRI will be done before treatment to assess the integrity of critical motor (corticospinal, CST) and sensory (dorsal column-medial lemniscus, DC-ML) tracts across the cervical spinal cord and brain. The investigators hypothesize that a combination of impairment measures and MRI measure will predict improvement in functional movement following three months of PRT.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01632293
|United States, Maryland|
|Motion Analysis Lab|
|Baltimore, Maryland, United States, 21205|
|Principal Investigator:||Kathleen M Zackowski, Ph.D.||Hugo W. Moser Research Institute at Kennedy Krieger, Inc.|