Measurement of wheelchair rolling resistance with a handle bar push technique

Woude, Lucas H V van der; Geurts, C.P.W.; Winkelman, H.; Veeger, H.E.J.

doi:10.1080/0309190031000096630

Cited by 44 publications

(38 citation statements)

References 13 publications

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“…The rolling resistance of the dynamometer used was found to be 14.28 N, reportedly just under that of rolling on low pile carpeting. 10,11 Consequently, we felt that subjects would be working at a greater level then self selected. The 10-min trial was chosen to challenge subjects without causing excessive exhaustion that could lead to drop out.…”

Section: Wheelchair Dynamometer and Testing Proceduresmentioning

confidence: 99%

Manual wheelchair stroke characteristics during an extended period of propulsion

et al. 2008

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Methods: Kinetic data were recorded from 21 subjects with paraplegia at four time points over the course of a 10-min propulsion trial at a steady state speed of 1.4 m s À1 . Upper extremity kinetic parameters were recorded using Smartwheels, force and torque sensing pushrims. Results: Subjects for propulsion biomechanics changed from early to late during the 10-min trial. Individuals displayed decreased maximum rate of rise of resultant force (P ¼ 0.0045) with a simultaneous increase in push time (P ¼ 0.043) and stroke time (P ¼ 0.023), whereas stroke frequency remained static. In addition, there was a decrease in out of plane moment application (P ¼ 0.032). Conclusion: Individuals seemed to naturally accommodate their propulsive stroke, using less injurious propulsion biomechanics over the course of a 10-minute trial on a dynamometer. The findings may have occurred as a result of both biomechanical compensations to a challenging propulsion trial and accommodation to propelling on a dynamometer. These results suggest that subjects may be capable of independently incorporating favorable biomechanical strategies to meet the demands of a challenging propulsion scenario.

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Section: Wheelchair Dynamometer and Testing Proceduresmentioning

confidence: 99%

Manual wheelchair stroke characteristics during an extended period of propulsion

et al. 2008

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“…The study was designed to occur at a low intensity while maintaining speeds and rolling resistance typically encountered during daily propulsion. The rolling resistance of the dynamometer used was fixed at 14.2 N, reportedly just under that of rolling on low pile carpeting (46,47).…”

Section: Instrumentationmentioning

confidence: 99%

Hand Rim Wheelchair Propulsion Training Using Biomechanical Real-Time Visual Feedback Based on Motor Learning Theory Principles

Rice

Gagnon

Gallagher

et al. 2010

The Journal of Spinal Cord Medicine

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Background/Objective: As considerable progress has been made in laboratory-based assessment of manual wheelchair propulsion biomechanics, the necessity to translate this knowledge into new clinical tools and treatment programs becomes imperative. The objective of this study was to describe the development of a manual wheelchair propulsion training program aimed to promote the development of an efficient propulsion technique among long-term manual wheelchair users. Methods: Motor learning theory principles were applied to the design of biomechanical feedback-based learning software, which allows for random discontinuous real-time visual presentation of key spatiotemporal and kinetic parameters. This software was used to train a long-term wheelchair user on a dynamometer during 3 low-intensity wheelchair propulsion training sessions over a 3-week period. Biomechanical measures were recorded with a SmartWheel during over ground propulsion on a 50-m level tile surface at baseline and 3 months after baseline. Results: Training software was refined and administered to a participant who was able to improve his propulsion technique by increasing contact angle while simultaneously reducing stroke cadence, mean resultant force, peak and mean moment out of plane, and peak rate of rise of force applied to the pushrim after training. Conclusions:The proposed propulsion training protocol may lead to favorable changes in manual wheelchair propulsion technique. These changes could limit or prevent upper limb injuries among manual wheelchair users. In addition, many of the motor learning theory-based techniques examined in this study could be applied to training individuals in various stages of rehabilitation to optimize propulsion early on.

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“…Improving wheelchair propulsion has motivated a substantial body of research, including studies on mechanical systems and components with regard to inertia and resistive loss [7][8]. When moving over ground, resistive energy losses occur because of a combination of rolling resistance, bearing resistance, tire scrub, and other frictional factors such as drag and frame flexion [2,9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of wheelchair resistive forces during straight and turning trajectories across different wheelchair configurations using free-wheeling coast-down test

Lin¹,

Huang²,

Sprigle³

2015

J Rehabil Res Dev

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Abstract-The purpose of this study was to develop a simple approach to evaluate resistive frictional forces acting on manual wheelchairs (MWCs) during straight and turning maneuvers. Using a dummy-occupied MWC, decelerations were measured via axle-mounted encoders during a coast-down protocol that included straight trajectories and fixed-wheel turns. Eight coast-down trials were conducted to test repeatability and repeated on separate days to evaluate reliability. Without changing the inertia of the MWC system, three tire inflations were chosen to evaluate the sensitivity in discerning deceleration differences using effect sizes. The technique was also deployed to investigate the effect of different MWC masses and weight distributions on resistive forces. Results showed that the proposed coast-down technique had good repeatability and reliability in measuring decelerations and had good sensitivity in discerning differences in tire inflation, especially during turning. The results also indicated that increased loading on drive wheels reduced resistive losses in straight trajectories while increasing resistive losses during turning. During turning trajectories, the presence of tire scrub contributes significantly to the amount of resistive force. Overall, this new coast-down technique demonstrates satisfactory repeatability and sensitivity for detecting deceleration changes during straight and turning trajectories, indicating that it can be used to evaluate resistive loss of different MWC configurations and maneuvers.

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Measurement of wheelchair rolling resistance with a handle bar push technique

Cited by 44 publications

References 13 publications

Manual wheelchair stroke characteristics during an extended period of propulsion

Manual wheelchair stroke characteristics during an extended period of propulsion

Hand Rim Wheelchair Propulsion Training Using Biomechanical Real-Time Visual Feedback Based on Motor Learning Theory Principles

Evaluation of wheelchair resistive forces during straight and turning trajectories across different wheelchair configurations using free-wheeling coast-down test

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