The Only Way Is Up: Active Knee Exoskeleton Reduces Muscular Effort in Quadriceps During Weighted Stair Ascent. - Vincent S. Boon; Brendon Ortolano; Andrew J. Gunnell; Margaret Meagher; Rosemarie C. Murray; Lukas Gabert; Tommaso Lenzi (IEEE Robotics Autom. Lett., 2025)