Isokinetic leg press for testing and training the lower limbs in closed kinetic chain.The CON-TREX® LP leg press is an isokinetic testing and training machine for the entire leg extensor and flexor chain. It can provide metered, measurable forces from a few N to 6000 N at speeds of up to 1 m/sec. Separate footplates allow unilateral training (on the left or right), bilateral training with both legs, or alternating mode. The adjustable footplate fixtures can be varied for selective testing and improvement of ankle joints in various positions. The inclination of the backrest can be electrically lowered to the horizontal position, the seat angle is synchronized with the adjustment of the backrest. The low seat height facilitates placement of patients with reduced mobility.Due to the functional motion, the entire muscle chain of the lower limbs is strengthened, while the coordination is simultaneously improved and the joint stability increased. The optimally adjusted load and strain of the (atrophied) musculature beyond the entire radius of motion can bring about a very sharp increase in the muscle strength and a significant improvement to coordination. All of this occurs without any excessive strain on the joint, especially in physiologically awkward positions.