Rope Cable Tricep Extension Video Transcript Set up on the rope cable, tricep extensions is with feet under hips, knees soft, a slight hinge at the hips with chest remaining tall, shoulders pulled down and elbows in tight to your sides. Extend the arms all the way, pausing at the bottom and squeezing the triceps. Take your time on the way up, keeping tension on your triceps and keeping the elbows in that fixed position.