Work

Validation of a Biofeedback System for Wheelchair Propulsion Training

Year: 2011

Type: article

Abstract: This paper describes the design and validation of the OptiPush Biofeedback System, a commercially available, instrumented wheel system that records handrim biomechanics and provides stroke-by-stroke biofeedback and targeting for 11 propulsion variables. Testing of the system revealed accurate measurement of wheel angle (0.02% error), wheel speed (0.06% error), and handrim loads. The maximum errors in static force and torque measurements were 3.80% and 2.05%, respectively. Measured forces were also found to be highly linear (0.985 < slope < 1.011) and highly correlated to the reference forces (r(2) > .998). Dynamic measurements of planar forces (F(x) and F(y)) and axle torque also had low error (-0.96 N to 0.83 N for force and 0.10 Nm to 0.14 Nm for torque) and were highly correlated (r > .986) with expected force and torque values. Overall, the OptiPush Biofeedback System provides accurate measurement of wheel dynamics and handrim biomechanics and may be a useful tool for improving manual wheelchair propulsion.

Source: Rehabilitation Research and Practice

DOI: 10.1155/2011/590780

Authors: Liyun Guo, Andrew M. Kwarciak, Russell Rodriguez, Nilanjan Sarkar, W. Mark Richter

Institutions: Vanderbilt University, MAX Mobility (United States)

Language: English

Topic: Assistive Technology in Communication and Mobility

Subfield: Occupational Therapy

Field: Health Professions

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $950