Archives of physical medicine and rehabilitation · 2004
Variable-ratio pushrim-activated power-assist wheelchair eases wheeling over a variety of terrains for elders.
Оценочное исследованиеСтатьяПоддержка правительства СШАНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Levy Charles E, Chow John W, Tillman Mark D, Hanson Carolyn, Donohue Tara, Mann William C
Аннотация
OBJECTIVES: To test (1) whether a prototype variable-ratio pushrim-activated power-assist wheelchair would decrease effort and perceived exertion associated with wheeling and (2) whether the prototype would be acceptable to elders.
DESIGN: Repeated-measures design.
SETTING: Biomechanics laboratory.
PARTICIPANTS: Eleven elderly wheelers (mean age +/- standard deviation, 70.7+/-7.8 y).
INTERVENTIONS: Wheelers propelled their own wheelchairs and the prototype on a level surface, a carpet, and an incline.
MAIN OUTCOME MEASURES: Surface electromyographic activity from upper limb and torso, heart rate, number of pushes, category-ratio scale of perceived exertion, and Consumer Assessment of Power Assist Wheelchairs.
RESULTS: Compared with subjects' own manual wheelchairs, the prototype was associated with lower heart rate elevation (P<.0125), lower perceived exertion (P<.0125), and reduced electromyographic activity in 5 of 8 muscles. Of the 11 participants, 10 found the prototype to be "very easy" or "easy" to push on level and inclined surfaces; 9 gave that assessment on carpeted and inclined surfaces. Seven would "definitely" or "probably" trade their manual chairs for the power-assist chair if given the opportunity. Nine thought they would venture to new and different places in a power-assist wheelchair. Time and number of pushes to complete tasks did not differ significantly between chairs.
CONCLUSIONS: The prototype reduced the effort associated with wheeling and was an acceptable alternative to manual wheelchairs. Further testing outside the laboratory is warranted.
DESIGN: Repeated-measures design.
SETTING: Biomechanics laboratory.
PARTICIPANTS: Eleven elderly wheelers (mean age +/- standard deviation, 70.7+/-7.8 y).
INTERVENTIONS: Wheelers propelled their own wheelchairs and the prototype on a level surface, a carpet, and an incline.
MAIN OUTCOME MEASURES: Surface electromyographic activity from upper limb and torso, heart rate, number of pushes, category-ratio scale of perceived exertion, and Consumer Assessment of Power Assist Wheelchairs.
RESULTS: Compared with subjects' own manual wheelchairs, the prototype was associated with lower heart rate elevation (P<.0125), lower perceived exertion (P<.0125), and reduced electromyographic activity in 5 of 8 muscles. Of the 11 participants, 10 found the prototype to be "very easy" or "easy" to push on level and inclined surfaces; 9 gave that assessment on carpeted and inclined surfaces. Seven would "definitely" or "probably" trade their manual chairs for the power-assist chair if given the opportunity. Nine thought they would venture to new and different places in a power-assist wheelchair. Time and number of pushes to complete tasks did not differ significantly between chairs.
CONCLUSIONS: The prototype reduced the effort associated with wheeling and was an acceptable alternative to manual wheelchairs. Further testing outside the laboratory is warranted.