The purpose of this study is to compare walking to leg strength and endurance in people with multiple sclerosis (PwMS). Using these findings, we hope to be better understand what causes PwMS to have problems walking.
The purposes of the research are to determine the association of gait performance with lower extremity muscle fatigability and strength measures, and create a preliminary model that can better explain the variance in gait performance based on these muscle performance values. Objective criterion-based measures of physical fatigue (i.e., fatigability) and muscle weakness have been associated with impaired task performance in people with multiple sclerosis (MS). MS-related deficits in muscle capacity result in higher fall risks and a loss of function. However, it is unclear if lower extremity fatigability tests add clinical value to objective strength testing in the rehabilitation and clinical management of MS. Better understanding how patterns of lower extremity (LE) fatigability and strength affect mobility in people with MS could improve outcome measure development and inform rehabilitation strategies.
Study Type
OBSERVATIONAL
Enrollment
35
Washington DC VA Medical Center
Washington D.C., District of Columbia, United States
Functional Ambulation Performance (FAP)
The FAP is used to quantify self-selected gait.
Time frame: 1 Day
Hip, knee, and ankle fatigability
For isometric tests, a exhaustion time will be calculated by determining the time that peak impulse declines to 50% using a method validated for individual with MS.
Time frame: 1 Day
Hip, knee, and ankle maximal volitional contraction
Maximal volitional contraction will be measured by the load cell using isometric expressed as peak torque.
Time frame: 1 Day
Adult Myopathy Assessment Tool (AMAT)
The Adult Myopathy Assessment Tool (0-45 score) is a physical test battery used to evaluate functional performance in individuals with neuromuscular disease. The test consists of 13 measures for functional mobility, balance, strength and endurance to mimic activities of daily living.
Time frame: 1 Day
5 times sit to stand test (5STS)
The 5STS reflects the amount of time required for a participant to complete 5 sit to stand maneuvers without using their hands. For this study we used the 5STS as a measure of functional capacity in people with multiple sclerosis.
Time frame: 1 Day
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