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Evaluating the Functionality and Usability of Two Novel Wheelchair Anti-Rollback Devices for Ramp Ascent in Manual Wheelchair Users With Spinal Cord Injury.
PM R. 2017 May; 9(5):483-493.PM R

Abstract

BACKGROUND

Difficulty ascending ramps and inclines with a manual wheelchair adversely affects the everyday mobility and overall quality of life of manual wheelchair users. Currently, various anti-rollback devices are available to assist manual wheelchair users to ascend ramps and inclines. However, these devices have 2 main shortcomings: restriction to backward motion limiting recovery from an overturning wheelchair, which is a safety concern; and difficulty in engaging/disengaging the device while on the ramp.

OBJECTIVE

To evaluate the functionality and usability of 2 novel wheelchair anti-rollback devices developed to address these shortcomings (prototypes "Wheel" and "Brake").

DESIGN

Cross-sectional.

SETTING

Rehabilitation research facility.

PARTICIPANTS

Twelve adult participants with chronic spinal cord injury.

METHODS

Participants completed training and tested with both the wheelchair anti-rollback devices on a 7.3-m-long ramp.

MAIN OUTCOME MEASUREMENTS

Number of stops, perceived physical exertion, pain, and ease of use of these devices as participants maneuvered their wheelchairs up a 7.3-m ramp were assessed. Participants also evaluated their satisfaction with the usability of both the devices using the Quebec User Evaluation of Satisfaction With Assistive Technology (QUEST 2.0).

RESULTS

Both prototypes evaluated overcame the limitations of the existing anti-rollback devices. Nonparametric statistical tests showed that participants rated both prototypes similarly for the overall functional and usability aspects. However, the participants' satisfactory rating were higher for the prototype "Brake" than for the prototype "Wheel" based on a functional aspect (ie, engaging/disengaging easiness), and higher for Wheel than for Brake, based on a usability aspect (prototype size).

CONCLUSIONS

The qualitative and quantitative outcomes of this investigation, based on the usability and functional evaluations, provided useful information for the improvement in the design of both anti-rollback devices, which may allow manual wheelchair users to manage ramp ascent more safely and easily. Further evaluations with a different SCI population is recommended.

LEVEL OF EVIDENCE

IV.

Authors+Show Affiliations

Max Nader Lab for Rehabilitation Technologies and Outcomes Research, Center for Bionic Medicine, Rehabilitation Institute of Chicago, Chicago, IL(∗).Max Nader Lab for Rehabilitation Technologies and Outcomes Research, Center for Bionic Medicine, Rehabilitation Institute of Chicago, Chicago, IL(†).Green Technologies, Inc, West Fork, AK(‡).Department of Computer Science, Loyola University Chicago, Chicago, IL(§).Max Nader Lab for Rehabilitation Technologies and Outcomes Research, Center for Bionic Medicine, Rehabilitation Institute of Chicago, 345 E. Superior St, Chicago, IL 60611; Departments of Physical Medicine & Rehabilitation and Medical Social Sciences, Northwestern University, Chicago, IL(‖). Electronic address: a-jayaraman@northwestern.edu.

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

27664403

Citation

Deems-Dluhy, Susan L., et al. "Evaluating the Functionality and Usability of Two Novel Wheelchair Anti-Rollback Devices for Ramp Ascent in Manual Wheelchair Users With Spinal Cord Injury." PM & R : the Journal of Injury, Function, and Rehabilitation, vol. 9, no. 5, 2017, pp. 483-493.
Deems-Dluhy SL, Jayaraman C, Green S, et al. Evaluating the Functionality and Usability of Two Novel Wheelchair Anti-Rollback Devices for Ramp Ascent in Manual Wheelchair Users With Spinal Cord Injury. PM R. 2017;9(5):483-493.
Deems-Dluhy, S. L., Jayaraman, C., Green, S., Albert, M. V., & Jayaraman, A. (2017). Evaluating the Functionality and Usability of Two Novel Wheelchair Anti-Rollback Devices for Ramp Ascent in Manual Wheelchair Users With Spinal Cord Injury. PM & R : the Journal of Injury, Function, and Rehabilitation, 9(5), 483-493. https://doi.org/10.1016/j.pmrj.2016.09.007
Deems-Dluhy SL, et al. Evaluating the Functionality and Usability of Two Novel Wheelchair Anti-Rollback Devices for Ramp Ascent in Manual Wheelchair Users With Spinal Cord Injury. PM R. 2017;9(5):483-493. PubMed PMID: 27664403.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluating the Functionality and Usability of Two Novel Wheelchair Anti-Rollback Devices for Ramp Ascent in Manual Wheelchair Users With Spinal Cord Injury. AU - Deems-Dluhy,Susan L, AU - Jayaraman,Chandrasekaran, AU - Green,Steve, AU - Albert,Mark V, AU - Jayaraman,Arun, Y1 - 2016/09/21/ PY - 2016/02/27/received PY - 2016/09/08/revised PY - 2016/09/10/accepted PY - 2016/10/27/pubmed PY - 2018/4/5/medline PY - 2016/9/25/entrez SP - 483 EP - 493 JF - PM & R : the journal of injury, function, and rehabilitation JO - PM R VL - 9 IS - 5 N2 - BACKGROUND: Difficulty ascending ramps and inclines with a manual wheelchair adversely affects the everyday mobility and overall quality of life of manual wheelchair users. Currently, various anti-rollback devices are available to assist manual wheelchair users to ascend ramps and inclines. However, these devices have 2 main shortcomings: restriction to backward motion limiting recovery from an overturning wheelchair, which is a safety concern; and difficulty in engaging/disengaging the device while on the ramp. OBJECTIVE: To evaluate the functionality and usability of 2 novel wheelchair anti-rollback devices developed to address these shortcomings (prototypes "Wheel" and "Brake"). DESIGN: Cross-sectional. SETTING: Rehabilitation research facility. PARTICIPANTS: Twelve adult participants with chronic spinal cord injury. METHODS: Participants completed training and tested with both the wheelchair anti-rollback devices on a 7.3-m-long ramp. MAIN OUTCOME MEASUREMENTS: Number of stops, perceived physical exertion, pain, and ease of use of these devices as participants maneuvered their wheelchairs up a 7.3-m ramp were assessed. Participants also evaluated their satisfaction with the usability of both the devices using the Quebec User Evaluation of Satisfaction With Assistive Technology (QUEST 2.0). RESULTS: Both prototypes evaluated overcame the limitations of the existing anti-rollback devices. Nonparametric statistical tests showed that participants rated both prototypes similarly for the overall functional and usability aspects. However, the participants' satisfactory rating were higher for the prototype "Brake" than for the prototype "Wheel" based on a functional aspect (ie, engaging/disengaging easiness), and higher for Wheel than for Brake, based on a usability aspect (prototype size). CONCLUSIONS: The qualitative and quantitative outcomes of this investigation, based on the usability and functional evaluations, provided useful information for the improvement in the design of both anti-rollback devices, which may allow manual wheelchair users to manage ramp ascent more safely and easily. Further evaluations with a different SCI population is recommended. LEVEL OF EVIDENCE: IV. SN - 1934-1563 UR - https://www.unboundmedicine.com/medline/citation/27664403/Evaluating_the_Functionality_and_Usability_of_Two_Novel_Wheelchair_Anti_Rollback_Devices_for_Ramp_Ascent_in_Manual_Wheelchair_Users_With_Spinal_Cord_Injury_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1934-1482(16)30965-0 DB - PRIME DP - Unbound Medicine ER -