Abstract
Objective To validate accelerometry based on its correlations with 6-minute walk distance (6MWD) and oxygen cost of walking as objective markers of walking limitations in multiple sclerosis (MS). Design Cross-sectional. Setting Laboratory and general community. Participants Ambulatory participants with MS (N=26) who resided in the local community. Interventions Not applicable. Main Outcome Measures Patient Determined Disease Steps (PDDS) scale and Multiple Sclerosis Walking Scale-12 (MSWS-12); 6-minute walk test while wearing a portable metabolic unit for measuring the 6MWD and oxygen cost of walking; accelerometer during the waking hours of a 7-day period. Results The average of total daily movement counts from the accelerometer correlated significantly and strongly with MSWS-12 scores (ρ=.681, P=.001), PDDS scores (ρ=.609, P=.001), 6MWD (ρ=.519, P=.003), and oxygen cost of walking (ρ=.541, P=.002). Conclusions We provide evidence that further supports the validity of accelerometry as a measure of walking limitations in ambulatory persons with MS.
Original language | English (US) |
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Pages (from-to) | 1942-1947 |
Number of pages | 6 |
Journal | Archives of Physical Medicine and Rehabilitation |
Volume | 91 |
Issue number | 12 |
DOIs | |
State | Published - Dec 2010 |
Keywords
- Gait
- Mobility limitation
- Multiple sclerosis
- Rehabilitation
- Walking
ASJC Scopus subject areas
- Physical Therapy, Sports Therapy and Rehabilitation
- Rehabilitation