This work explores the fundamental physics of human locomotion to understand how energetically passive devices can enhance top movement speed. Drawing inspiration from the bicycle—which allows legs to supply energy continuously—analytical models are developed to study how passive exoskeletons might extend human running speed without adding external power or increasing limb force.
Why it matters: Passive exoskeletons hold the promise of augmenting human mobility with minimal complexity and no external energy. By uncovering the principles that enable faster movement without power input, this research points toward practical wearable devices that can extend human performance in sports and rescue.