In the article they mention it's about a 7% efficiency increase, which they say is equivalent to taking of a 10 pound backpack. Which considering it's an unpowe

In the article they mention it's about a 7% efficiency increase, which they say is equivalent to taking of a 10 pound backpack. Which considering it's an unpowered device, it actually really impressive to me. The running example would be fun to look at, but I think the benefit this could give to people who have trouble walking is even better. My grandfather had post polio syndrome which made walking incredibly difficult for him for most of his life. He didn't let it stop him, but you could see the pain on his face whenever he walked. I think something like this would have been beneficial for him.