NDLI: Manual wheelchair downhill stability: an analysis of factors affecting tip probability

Content Provider	Springer Nature : BioMed Central
Author	Thomas, Louise Borisoff, Jaimie Sparrey, Carolyn J.
Abstract	Background For people who use manual wheelchairs, tips and falls can result in serious injuries including bone fractures, concussions, and traumatic brain injury. We aimed to characterize how wheelchair configuration changes (including on-the-fly adjustments), user variables, and usage conditions affected dynamic tip probability while rolling down a slope and contacting a small block. Methods Rigid body dynamic models of a manual wheelchair and test dummy were created using multi-body software (Madymo, TASS International, Livonia, MI), and validated with 189 experiments. Dynamic stability was assessed for a range of seat angles (0 to 20° below horizontal), backrest angles (0 to 20°), rear axle positions (0 to 20 cm from base of backrest), ground slopes (0 to 15°), bump heights (0 to 4 cm), wheelchair speeds (0 to 20 km/hr), user masses (50 to 115 kg), and user positions (0 to 10 cm from base of backrest). The tip classifications (forward tip, backward tip, rolled over bump, or stopped by bump) were investigated using a nominal logistic regression analysis. Results Faster wheelchair speeds significantly increased the probability of tipping either forward or backward rather than stopping, but also increased the probability of rolling over the bump (p < 0.001). When the rear axle was positioned forward, this increased the risk of a backward tip compared to all other outcomes (p < 0.001), but also reduced the probability of being stopped by the bump (p < 0.001 compared to forward tip, p < 0.02 compared to rolling over). Reclining the backrest reduced the probability of a forward tip compared to all other outcomes (p < 0.001), and lowering the seat increased the probability of either rolling over the bump or tipping backwards rather than tipping forward (p < 0.001). In general, the wheelchair rolled over bumps < 1.5 cm, and forwards tipping was avoided by reducing the speed to 1 km/hr. Conclusions The probability of forward tipping, corresponding to the greatest risk of injury, was significantly reduced for decreased speeds, smaller bumps, a reclined backrest, and a lower rear seat height. For wheelchairs with dynamic seating adjustability, when travelling downhill, on-the-fly adjustments to the seat or backrest can increase the likelihood of safely rolling over a bump.
Related Links	https://jneuroengrehab.biomedcentral.com/counter/pdf/10.1186/s12984-018-0450-3.pdf
Ending Page	12
Page Count	12
Starting Page	1
File Format	HTM / HTML
ISSN	17430003
DOI	10.1186/s12984-018-0450-3
Journal	Journal of NeuroEngineering and Rehabilitation
Issue Number	1
Volume Number	15
Language	English
Publisher	BioMed Central
Publisher Date	2018-11-06
Access Restriction	Open
Subject Keyword	Neurosciences Neurology Rehabilitation Medicine Biomedical Engineering and Bioengineering Wheelchair stability Mobility devices Rigid body dynamics Simulation Motion capture
Content Type	Text
Resource Type	Article
Subject	Health Informatics Rehabilitation
Journal Impact Factor	5.2/2023
5-Year Journal Impact Factor	5.6/2023

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Assessment of a markerless motion analysis system for manual wheelchair application

The dynamics of electric powered wheelchair sideways tips and falls: experimental and computational analysis of impact forces and injury

Effects of variable practice on the motor learning outcomes in manual wheelchair propulsion

Participatory design in the development of the wheelchair convoy system

Augmented feedback for manual wheelchair propulsion technique training in a virtual reality simulator

Socially assistive robotics for post-stroke rehabilitation

Multibody dynamics-based musculoskeletal modeling for gait analysis: a systematic review

Customization of manual wheelchair components: a state-of-the-art review

Evaluation of an intelligent wheelchair system for older adults with cognitive impairments

Manual wheelchair downhill stability: an analysis of factors affecting tip probability

Similar Documents

Assessment of a markerless motion analysis system for manual wheelchair application

The dynamics of electric powered wheelchair sideways tips and falls: experimental and computational analysis of impact forces and injury

Effects of variable practice on the motor learning outcomes in manual wheelchair propulsion

Participatory design in the development of the wheelchair convoy system

Augmented feedback for manual wheelchair propulsion technique training in a virtual reality simulator

Socially assistive robotics for post-stroke rehabilitation

Multibody dynamics-based musculoskeletal modeling for gait analysis: a systematic review

Customization of manual wheelchair components: a state-of-the-art review

Evaluation of an intelligent wheelchair system for older adults with cognitive impairments

Manual wheelchair downhill stability: an analysis of factors affecting tip probability