Nautilus Iso kinetic-type exercise machine which attempts to match resistance with user's force.

Negative Reps One or two partners help you lift a weight up to 50% heavier than you would normally lift to finish point of movement. Then you slowly lower weight on your own.

Non-Locks Performing an exercise without going through complete range of motion. For example, doing squat without coming to full lockout position of knees or pressing a barbell without locking out elbows