Humans have more than 600 skeletal muscles and can therefore move about in countless ways, at least in theory. And yet all humans move in much the same way and adapt their movements in similar ways as they age. Why is that? How do elite athletes control their muscles to achieve optimal performance? And why is ageing accompanied by mobility issues? Eline uses computer-generated models of the human neuro-muscular-skeletal system to simulate, analyse and optimise human motion. She also designs systems that help patients and athletes learn to optimise their movements. Her research focuses specifically on the impact of ageing and the biomechanical differences between men and women.