A400 Seated Calf

Model 2936

A400 Seated Calf

Offers 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.
Large digital displays with resistance and counted repetitions.

Every workout can be a test. Get testing data from every workout. Make program changes in real-time to optimize workout time and continue to progress.

Maximize performance with real-time, visual feedback. Research indicates real-time visual feedback can increase athlete intent. A400 technology provides the feedback that inspires improved performance.

Quantify progress automatically. Capture vast amounts of performance data in the weight room or clinic. A400 makes it easy to capture force, velocity, power, and range of motion to track progress.

Performance drop-offs show when to stop. Set custom performance drop-off levels (e.g. 80% of peak power). See when more reps would produce diminished returns. Know when to end a set to save time and reduce risk.

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Specifications

Height

53" / 1346mm

Width

29”/ 737 mm

Depth

47" / 1194mm

Weight

185 lbs / 84 kg

Resistance

0 - 814 lbs/ 0 - 369 kg

Features

PRESS INTO A NEW STANDARD

The A400 Seated Calf was engineered to develop explosive lower-leg power, originally designed for world record holders Willie Banks (triple jump) and Mike Powell (long jump). Featuring unilateral movement, it ensures balanced strength development by allowing each leg to work independently. The machine automatically pre-loads and adjusts for leg length, providing a customized fit for optimal performance. Unlike conventional weight-stack machines, the A400’s low-inertia, pneumatic resistance delivers smooth, controlled movement, reducing stress on joints and minimizing shock loading. Integrated with Keiser’s advanced A400 technology, it tracks real-time performance metrics and syncs seamlessly with the Keiser Metrics App for data-driven training optimization. The A400 Seated Calf offers a safer, more effective way to build lower-leg strength and power.

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