The isokinetic dynamometer is a specialized machine used to measure and train muscle strength with high precision. Unlike normal gym equipment, it controls the speed of movement, not the weight. No matter how hard a person pushes or pulls, the machine keeps the motion at a constant velocity while adjusting resistance automatically

This is Soramatex from Sora Materials, out of Nagoya University in Japan. It uses carbon powder, which makes it sound like maybe it’s a graphene aerogel — which, to be clear, is a thing that already exists and can get even lighter than this