Empulse R90 Tackles Long Distances and Preserves the Upper Extremities An active rider constantly propels their wheelchair over various terrains and distances throughout the day, increasing the potential for repetitive strain injury to the shoulders, elbows, and wrists. Power assist devices for wheelchairs provide a method to reduce push strokes, increase efficiency, save energy, and protect the shoulders. The goal of reducing those strokes takes on new meaning when the Empulse R90 is put into practice for an active rider who is also a competitive athlete. 2025-09-30 Keep Reading