The Keiser A400 Functional Trainer brings together clinical precision and intelligent technology to enhance outcomes across rehabilitation and sports reconditioning. Its air-powered resistance provides smooth, consistent loading through all movement speeds, reducing joint stress and supporting controlled, pain-free motion.

With the next-generation A400 digital display, therapists can capture rep-by-rep performance data — including force, power, and velocity — to tailor programmes to each individual’s capacity and fatigue levels. This data-led approach supports better progression planning, reduces the risk of re-injury, and bridges the gap between rehabilitation and performance training.

Compact, versatile, and intuitive, the Keiser Functional Trainer enables clinicians to train smarter, assess more accurately, and restore function faster — redefining the future of physiotherapy and sports rehabilitation.