Short Tilte:Using the absorbed power method to evaluate effectiveness of vibration absorption of selected seat cushion during manual wheelchair propulsion
Journal:Medical Engineering and Physics
Year, Volume, Issue, Page(s):04, 26, 9, 799-806
Study examined the effects of 4 of the most commonly prescribed seat cushions on the transmission of whole-body vibrations during manual wheelchair propulsion. Participants were asked to propel their wheelchair over a simulated activities-of-daily-living obstacle course while acceleration and force data were recorded. The course included small, medium, and large sinusoidal bumps; a ramp, a curb drop, carpeting, dimple strip, door threshold, and rumble strip. The mean absorbed power was evaluated for the entire course, descending the curb drop, and traversing the rumble strip. Results showed no significant difference between the cushions for the total absorbed power or the curb drop or the rumble strip. Overall, the Invacare Pindot cushion recorded the lowest values for peak-absorbed power while traversing the curb drop and the Varilite Solo produced the lowest absorbed powers for each of the measured variables.