• IEEE Trans Neural Syst Rehabil Eng · Sep 2002

    Comparative Study Clinical Trial

    Development of an indoor rowing machine with manual FES controller for total body exercise in paraplegia.

    • Rahman Davoodi, Brian J Andrews, Garry D Wheeler, and Robert Lederer.
    • A. E. Mann Institute for Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA. davoodi@usc.edu
    • IEEE Trans Neural Syst Rehabil Eng. 2002 Sep 1;10(3):197-203.

    AbstractConcept 2 indoor rowing machine (Concept 2 Inc., USA) was modified for functional electrical stimulation (FES) rowing exercise in paraplegia. A new seating system provides trunk stability and constrains the leg motion to the sagittal plane. A 4-channel electrical stimulator activates the quadriceps and hamstrings in Drive and Recovery phases of the rowing cycle, respectively. Two force-sensing resistors (FSR) on the handle measure the thumb press as the command signal to the electrical stimulator. Optical encoders measure the positions of the seat and handle during rowing. To synchronize the voluntarily controlled upper body movement with the FES controlled leg movement, a novel manual control system was developed. It uses the voluntary thumb presses to control the timing of the stimulation to the paralyzed leg muscles. The manual control system was intuitive and easy to learn and resulted in well-coordinated rowing. Evaluation of the modified rower by paraplegic volunteers showed that it is effective, safe, and affordable exercise alternative for paraplegics.

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