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Shoulder Muscle Demand During Pushrim-Activated Power-Assisted Wheelchair Propulsion

By Requejo, Philip S., PhD; Newsam, Craig J., DPT; Haubert, Lisa Lighthall, MPT; Mulroy, Sara J., PhD; RESNA 29th International Annual Conference 2006,
Publication Date: 2006

Study conducted to evaluate the electromyographic activity and propulsion characteristics among people with cervical spinal cord injuries when using a standard manual wheelchair and an Xtender pushrim-activated power-assisted wheelchair (PAPAW). A stationary ergometer was used to calculate quantitative data. The researchers hypothesized that the Xtender would yield decreases in shoulder muscle usage and intensity. The results indicated decreased levels of electromyographic intensity and duration of muscle usage during propulsion, especially when the participant was traveling at greater speeds with increased resistance. The authors contend that decreases in muscular demand should yield positive health benefits for people who use manual wheelchairs.
Published by: Rehabilitation Engineering & Assistive Technology Society of North America (RESNA)   (Website:http://www.resna.org)

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