Keiser A400 Leg Extension Pro

Keiser A400 Leg Extension Pro

The quadriceps is crucial for stability and mobility, so it is worth strengthening directly. The A400 Leg Extension has an adjustable seat that keeps its tilt while moving forward and back, giving a comfortable position.

Smooth pneumatic resistance reduces shock loading and with it the strain on the joints. Software integration allows data to be collected in real time and synced with the Keiser Metrics App.

Key benefits

• Unilateral movement - each limb can be trained symmetrically
• Increased resistance range for more intense functional workouts
• Smooth Keiser Dynamic Variable Resistance
• Fully adjustable to accommodate a wide range of users
• Bilateral movement for body symmetry training
• Large digital display with resistance and counted repetitions

Keiser Dynamic Variable Resistance

Keiser's Dynamic Variable Resistance is designed to provide a smooth, consistent force curve at any training speed. Each machine has its own resistance curve, tuned for the muscles used in that particular exercise. For the user it means training at maximum efficiency at whatever speed they work.