The purpose of this study was to examine the feasibility of using two functional neuromuscular stimulation (FNS) exercise modes for spinal cord injured patients. The instrumentation consisted of a specially-constructed chair for FNS knee extension resistance exercise and a commercially-available ergometer for FNS leg cycle ergometry. Both instruments incorporated the use of surface electrodes and FNS-induced contractions of paralyzed leg muscles. Seven spinal cord injured patients (4 quadriplegics and 3 paraplegics) participated in seven weeks (three sessions per week) of progressive intensity knee extension training utilizing FNS of the quadriceps muscles, followed by seven weeks of cycle ergometer training utilizing FNS of the quadriceps, hamstring, and gluteal muscle groups. The effects of knee extension training upon quadriceps muscle performance were documented through measurements of leg girths and strength before and after trainig. Leg girths and power output levels achieved were measured before and after cycle ergometer training. The results showed a statistically significant increase in thigh girth and quadriceps strength after knee extension training. A statistically significant increase in power output level was achieved after cycle ergometer training. In comparison to postknee extension measurements, thigh girth did not increase further after cycle ergometer training. It was concluded that the instrumentation and trining protocols used were effective in increasing muscle performance and thigh girth during knee extension resistance training and power output during cycle ergometry, with no observable adverse effects. Therefore, it appears feasible to use these FNS exercise modes in a clinical setting with spinal cord injured patients. The purpose of this study was to examine the feasibility of using two functional neuromuscular stimulation (FNS) exercise modes for spinal cord injured patients. The instrumentation consisted of a specially-constructed chair for FNS knee extension resistance exercise and a commercially-available ergometer for FNS leg cycle ergometry. Both instruments incorporated the use of surface electrodes and FNS-induced contractions of paralyzed leg muscles. Seven spinal cord injured patients (4 quadriplegics and 3 paraplegics) participated in seven weeks (three sessions per week) of progressive intensity knee extension training utilizing FNS of the quadriceps muscles, followed by seven weeks of cycle ergometer training utilizing FNS of the quadriceps, hamstring, and gluteal muscle groups. The effects of knee extension training upon quadriceps muscle performance were documented through measurements of leg girths and strength before and after trainig. Leg girths and power output levels achieved were measured before and after cycle ergometer training. The results showed a statistically significant increase in thigh girth and quadriceps strength after knee extension training. A statistically significant increase in power output level was achieved after cycle ergometer training. In comparison to postknee extension measurements, thigh girth did not increase further after cycle ergometer training. It was concluded that the instrumentation and trining protocols used were effective in increasing muscle performance and thigh girth during knee extension resistance training and power output during cycle ergometry, with no observable adverse effects. Therefore, it appears feasible to use these FNS exercise modes in a clinical setting with spinal cord injured patients