Keiser A400 Leg Press

The KEISER A400 Leg Press is the data-rich evolution of KEISER's premier lower body machine — combining the zero-shock pneumatic resistance and higher footplate design of the A300 with a 15.6" touchscreen that enables elite-level load-velocity profiling, bilateral symmetry analysis, and real-time performance drop-off monitoring. The definitive leg press for elite sports performance facilities, rehabilitation centres, and any environment where data drives results.

• Load-velocity profiling — built-in software creates a complete athlete load-velocity profile in just 4–6 minutes, identifying whether an athlete is velocity-dominant or force-dominant for precision programming
• Bilateral symmetry analysis — independent footplates provide real-time left vs. right limb power and ROM feedback, enabling clinicians to identify imbalances before they lead to injury
• Performance drop-off alerts — set custom output thresholds (e.g. 80% of peak power); the machine alerts the user when output drops, ensuring every rep is high-quality and reducing overtraining risk
• Higher footplate placement — increases hip flexion and decreases knee flexion to maximise glute activation and significantly reduce shearing forces on the knee — ideal for both heavy strength training and post-injury rehabilitation
• 0–924 lb (0–419 kg) resistance range — pneumatic Dynamic Variable Resistance with zero shock loading across the full range
• 15.6" colour touchscreen — tracks power, velocity, force, and range of motion with Wi-Fi and Bluetooth connectivity
• Unilateral and bilateral footplates — independent movement for symmetry analysis and targeted single-leg training

Specifications

• Dimensions: 69" L x 36" W x 48" H (1,753 x 914 x 1,219 mm)
• Machine Weight: 336 lb (152 kg)
• Resistance Range: 0–924 lb (0–419 kg)
• Resistance System: Pneumatic with KEISER Dynamic Variable Resistance
• Movement Type: Unilateral and bilateral independent footplates
• Display: 15.6" colour touchscreen
• Metrics: Power, velocity, force, range of motion, bilateral symmetry
• Connectivity: Wi-Fi and Bluetooth

Stocked at FSC Mayfair because the A400 Leg Press does not just train athletes — it analyses them, profiles them, and makes every session more intelligent than the last.