PLAE ARMR Leg Extension | Plate-Loaded Strength Machine The ARMR Leg Extension reinforces the foundation with a smooth, controlled arc that keeps knee alignment clean throughout the movement. An adjustable backrest dials in precise athlete setup, while an optimized strength curve sustains tension through the full range of motion — effective for heavy strength work, hypertrophy, or rehab. Key Features Smooth, controlled arc with clean knee alignment Adjustable backrest for precise athlete setup Optimized strength curve maintaining constant tension Suited for strength, hypertrophy, and rehab work Plate-loaded isolation design Targets quadriceps Specs Footprint: 50"W x 48"L