A Quantum Leap: This Paralympic Athlete Is Harnessing The Power of Personalized Training Equipment, Built With The Latest 3D-Printing Technology

With surprising cheerfulness, Anna Grimaldi recounts the years of aggravation her weight-training sessions used to cause her. Born without a right hand, Grimaldi couldn’t securely grip a bar with a standard prosthetic, making it impossible to do the same kind of squats and other exercises that track athletes rely on to build leg strength. “It was quite frustrating on my end, because I knew what I needed but I had nowhere to go to get it,” the 22-year-old long jumper says.