FES Arm Cycling on Functional Ability and Strength in People With SCI

The goal of this feasibility study is to determine if Functional Electrical Stimulation (FES) arm cycling can be used to improve arm functional ability and arm strength in people with Spinal Cord Injury (SCI). The main questions it aims to answer are: * What is the feasibility of FES UL cycling in people with acute tetraplegia? * What are the potential effects of FES UL cycling on strength and functional ability in people with acute tetraplegia? Participants will: * Complete an FES arm cycling intervention 3 times a week for 6 weeks. * Complete assessments for upper limb function and strength pre and post-intervention. * Complete questionnaires about upper limb and overall function and quality of life, pre and post-intervention.