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Hale LA, Pal J, Becker I. Measuring free-living physical activity in adults with and without neurologic dysfunction with a triaxial accelerometer.

To investigate the reliability, validity, and utility of a triaxial accelerometer to measure physical activity in the free-living environment in adults with and without neurologic dysfunction.

Repeated-measures design.

General community.

Volunteer sample of 17 men and 30 women (age range, 28−91y) living in the community with stroke of greater than 6 months in duration (n=20), Parkinson disease (n=7), or multiple sclerosis (n=11), and healthy but sedentary controls (n=9).

Not applicable.

Physical activity measured with the TriTrac RT3 accelerometer, 7-day recall questionnaire, and activity diary.

The accelerometer reliably measured free-living physical activity (intraclass …