Test Drive

Proven Benefits

The benefits of the FlexRim have been extensively tested in a wheelchair propulsion biomechanics laboratory.  The studies were funded by the National Institutes of Health (NIH), which is interested in reducing overuse injuries in the manual wheelchair population.  The results of these studies were published in leading scientific journals and show that the use of the FlexRim may help reduce the likelihood of developing overuse injuries due to impact loading, grip stress or pushing fatigue.

  • Pushes were found to be 13% more powerful on average.  [1]
  • Impact loading was found to be reduced by 10% on average.  [2]
  • Overall effort (energy used) was found to be reduced by 13% on average.  [2]
  • Peak grip force was found to be reduced by 12% on average.  [3]
  • Overall grip exertion was found to be reduced by 15% on average.  [3]



[1] Richter W.M., Rodriguez R., Woods K.R., Axelson P.W. (2005). Biomechanics of the FlexRim wheelchair handrim. Proceedings of the ASB '05 Annual Conference. Cleveland, OH.
[2] Richter WM, Rodriguez R, Woods KR, Axelson PW (2009). Impact Attenuation and Efficiency Characteristics of a Flexible Wheelchair Handrim. Topics in Spinal Cord Injury Rehabilitation. 15(2):71-78.
[3] Richter WM, Rodriguez R, Woods KR, Karpinski AP, Axelson PW (2006). Reduced finger and wrist flexor activity during propulsion with a new flexible handrim. Arch Phys Med Rehabil. 87(12):1643-7.