Study: NCT03300258

Intervention type: DEVICE
Group type: OTHER
Intervention: Robotic therapy
Description: The Robotic group will use a robotic training protocol to incentivize recovery of motor control by changing task demands throughout the training period. One or more target tasks will be chosen to mimic different sub-functions of gait, including some which are not normally excited in typical cycling behavior. Also, tasks may be designed to target non-gait motions such as hip ab/adduction. The required task may be changed periodically. This therapy protocol will occupy 30 minutes of each training session. Prior to testing, EMG electrodes will be placed on the major muscles of both legs, a procedure that takes roughly 15 minutes. Another 15 minutes is for changing clothes, briefing the subject, and other ancillary study activities. The total time per training session is 1 hour.

Intervention type: DEVICE
Group type: OTHER
Intervention: Robotic therapy
Description: The Robotic group will use a robotic training protocol to incentivize recovery of motor control by changing task demands throughout the training period. One or more target tasks will be chosen to mimic different sub-functions of gait, including some which are not normally excited in typical cycling behavior. Also, tasks may be designed to target non-gait motions such as hip ab/adduction. The required task may be changed periodically. This therapy protocol will occupy 30 minutes of each training session. Prior to testing, EMG electrodes will be placed on the major muscles of both legs, a procedure that takes roughly 15 minutes. Another 15 minutes is for changing clothes, briefing the subject, and other ancillary study activities. The total time per training session is 1 hour.

Intervention type: DEVICE
Group type: EXPERIMENTAL
Intervention: Robotic therapy
Description: The Robotic group will use a robotic training protocol to incentivize recovery of motor control by changing task demands throughout the training period. One or more target tasks will be chosen to mimic different sub-functions of gait, including some which are not normally excited in typical cycling behavior. Also, tasks may be designed to target non-gait motions such as hip ab/adduction. The required task may be changed periodically. This therapy protocol will occupy 30 minutes of each training session. Prior to testing, EMG electrodes will be placed on the major muscles of both legs, a procedure that takes roughly 15 minutes. Another 15 minutes is for changing clothes, briefing the subject, and other ancillary study activities. The total time per training session is 1 hour.

Intervention type: DEVICE
Group type: ACTIVE_COMPARATOR
Intervention: Aerobic therapy
Description: The Control group protocol is identical to that of the Robotic group, except the robotically-incentivized exercise is replaced with an aerobic exercise. This intervention emulates a commercial motorized exercise bike to improve cardiovascular unfitness contributions to gait impairment. This therapy implements assist-as-needed and constant-velocity control. The patient's target pedaling speed (e.g. 20 rev/min (to be finalized through pilot tests) and power level (set by heart rate to require approximately 50-70% of maximal oxygen uptake) are set at the beginning of each session and a motor provides assistance or resistance to compensate for the performance of the patient. The exercise will be performed in this mode for 30 minutes per training session.

Intervention type: DEVICE
Group type: OTHER
Intervention: Aerobic therapy
Description: The Control group protocol is identical to that of the Robotic group, except the robotically-incentivized exercise is replaced with an aerobic exercise. This intervention emulates a commercial motorized exercise bike to improve cardiovascular unfitness contributions to gait impairment. This therapy implements assist-as-needed and constant-velocity control. The patient's target pedaling speed (e.g. 20 rev/min (to be finalized through pilot tests) and power level (set by heart rate to require approximately 50-70% of maximal oxygen uptake) are set at the beginning of each session and a motor provides assistance or resistance to compensate for the performance of the patient. The exercise will be performed in this mode for 30 minutes per training session.