Keiser A400 Leg Extension

Keiser A400 Leg Extension

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

• Cost-effective way to provide strength training options
• Virtually zero shock to muscles, connective tissues, and joints
• 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
• Durable construction engineered for years of use
• Thick base for added stability

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.