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Aim

Does a waist-worn ActiGraph accelerometer quantify community ambulation in persons with multiple sclerosis?. Jacob J. Sosnoff, PhD; Michael J. Socie, MS; Morgan K. Boes, MS; Brian M. Sandroff, MS; Robert W. Motl, PhD. Aim

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Aim

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  1. Does a waist-worn ActiGraph accelerometer quantify community ambulation in persons with multiple sclerosis? Jacob J. Sosnoff, PhD; Michael J. Socie, MS; Morgan K. Boes, MS; Brian M. Sandroff, MS; Robert W. Motl, PhD

  2. Aim • Examine association between community-based walking and movement counts recorded by waist-worn accelerometer in persons with multiple sclerosis (MS). • Relevance • Accelerometry objectively measures community ambulation in persons with MS. • However, assumption that walking itself serves as major contributor to accelerometer signal hasn’t been tested.

  3. Method • Ambulatory persons with MS wore triaxial accelerometer (ActiGraph GT3X) and IDEEA system for 1 day. • 5 males/17 females. • 13 without aid/9 with aid. • Outcome measures for accelerometer: • Movement counts per hour for vertical, anterior-posterior, and mediolateral axes. • Outcomes for IDEEA system: • % time walking, sitting, standing; walking speed.

  4. Results • Significant correlations between: • % walking time and movement counts per hour along the vertical and anterior-posterior axes. • Movement counts per hour along the vertical axis and: • walking speed • self-reported walking impairment • disability.

  5. Conclusion • Our observations further support accelerometry as objective marker of community ambulation in persons with MS.

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