Manual wheelchair stroke characteristics during an extended period of propulsion
| Autor: | C Niyonkuru, Michael L. Boninger, Bradley G Impink, Ian Rice |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Adult
Male medicine.medical_specialty Time Factors Movement Propulsion Manual wheelchair Task Performance and Analysis Humans Medicine Torque Range of Motion Articular Stroke Spinal Cord Injuries Paraplegia Dynamometer business.industry Biomechanics General Medicine Middle Aged medicine.disease Biomechanical Phenomena Cross-Sectional Studies Rehabilitation research Wheelchairs Neurology Arm Physical therapy Female Stress Mechanical Neurology (clinical) Range of motion business Psychomotor Performance |
| Zdroj: | Spinal Cord. 47:413-417 |
| ISSN: | 1476-5624 1362-4393 |
| Popis: | Cross-sectional study. The purpose of this study was to examine stroke characteristics of long-term manual wheelchair users during an extended manual wheelchair propulsion trial and the extent to which changes in propulsion biomechanics occurred. Human Engineering Research Laboratories, VA Rehabilitation Research and Development Center, VA Pittsburgh Healthcare Systems, Pittsburgh, PA, USA. 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−1. Upper extremity kinetic parameters were recorded using Smartwheels, force and torque sensing pushrims. 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=0.0045) with a simultaneous increase in push time (P=0.043) and stroke time (P=0.023), whereas stroke frequency remained static. In addition, there was a decrease in out of plane moment application (P=0.032). 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|