Feasibility of HIIT in Spinal Cord Injury

"A handcycle or tabletop ergometer will be used for HIIT. Exercise sessions will be scheduled 3x/week for 6 weeks (2 sessions supervised, 1 session unsupervised). The HIIT goal is to achieve 10 sets of 60 second bouts of arm cycling at 90% of their PPO with 60 seconds of active recovery.~Supervised exercise sessions: Measures include HR, BP, RPEs, Feeling Scale, and PPO. After warming up, individualized work/rest phases will be prescribed based on their PPO from their maximal aerobic test. Participants will be held at 90% PPO as a constant target intensity to start, shortening the work phase, and if necessary, lengthening the recovery phase. These parameters will be progressed each session. The trainer will determine when to change their work/rest parameters based off of HR and RPEs.~Unsupervised exercise sessions: Participants will repeat the same HIIT protocol they performed during the previous supervised session. The bike computer automatically stores HR and PPO."