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Activity monitor accuracy in persons using canes

Activity monitor accuracy in persons using canes. Deborah Michael Wendland, PT, DPT, CPed; Stephen H. Sprigle, PhD, PT. Aim Report accuracy of leg-mounted and cane-mounted StepWatch devices on people ambulating over different surfaces while using a cane. Relevance

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Activity monitor accuracy in persons using canes

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  1. Activity monitor accuracy in persons using canes Deborah Michael Wendland, PT, DPT, CPed; Stephen H. Sprigle, PhD, PT

  2. Aim • Report accuracy of leg-mounted and cane-mounted StepWatch devices on people ambulating over different surfaces while using a cane. • Relevance • Physical activity is important for health and associated with decreased all-cause mortality. • Assistive device use has increased to facilitate increased independence with activities of daily living.

  3. Method • 16 subjects (67 to 85 yr old) who regularly use a cane for ambulation participated. • StepWatch calibration was performed by adjusting sensitivity and cadence. • Following calibration optimization, accuracy was tested on: • Leg-mounted vs cane-mounted devices. • Different surfaces, including linoleum, sidewalk, grass, ramp, and stairs.

  4. Results • Accuracy: • Leg-mounted:93.4% all surfaces. • Cane-mounted:84.7% all surfaces. • Significantly less accurate on stairs. Gray bars = leg-mounted. Black bars = cane-mounted.

  5. Conclusion • When monitoring community mobility, placement of StepWatch on a person and his or her ambulation aid can accurately document both activity and device use.

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