UPPERTONE
unassisted muscle strengthening system for quadriplegics
The only product of its kind, the UPPERTONE was designed and introduced in 1990 by a C4-C5 quadriplegic.
It allows people with C4-C5 and below quadriplegia (tetraplegia) due to spinal cord injury to do all the necessary upper body exercises necessary for rehabilitation and maintenance, without any assistance.
Indeed they can make all the adjustments, including resistance, without hand grip strength, cuffs, or assistance.