Researchers unveiled a pair of robotic shorts that assist in walking and running.

The entire get-up, which includes a battery that straps around the waist and a motor on the lower back that connects to pull-cables, weighs just five kilograms (11 pounds) and detects its wearer's gait to appropriately adjust its output.

https://www.afp.com/en/news/3954/sprinting-future-robo-shorts-help-runners-get-ahead-doc-1jk3ht2