KS107 Chest Press Trainer —Bilateral Hydraulic Vertical Push-Pull Rehabilitation

The AE-KS107 Chest Press Trainer is a clinical-grade bilateral vertical push-pull upper limb rehabilitation machine. The device can push and pull the upper limbs on the vertical plane, and strengthen the muscle chains of the active and antagonistic muscles. 

The KS107 trains pectoralis major, anterior deltoid, triceps brachii, and serratus anterior (push phase) and posterior deltoid, rhomboids, middle trapezius, and biceps brachii (pull phase) through bidirectional hydraulic resistance in a bilateral vertical push-and-pull movement pattern — the clinical analogue of the seated chest press and cable row exercises used in rehabilitation gym programmes worldwide.

Key Features —

• Two-Way Hydraulic Resistance — Vertical Push-Pull Balance The two-way hydraulic resistance can start from the lowest limit set, with small inertia. Hydraulic resistance in the KS107 delivers: 

1. Push phase resistance: Pectoralis major, anterior deltoid, triceps brachii, and serratus anterior all loaded concentrically during the forward push — the primary strengthening stimulus for functional pressing movement capacity
2. Pull phase resistance: Posterior deltoid, rhomboids, middle trapezius, and biceps brachii loaded concentrically during the return pull — training the posterior shoulder and mid-back retractors that counterbalance the anterior push muscles and are critical for scapular stability and posture

This bidirectional resistance ensures that anterior and posterior shoulder muscle balance is systematically maintained — preventing the anterior shoulder dominance that commonly results from rehabilitation programmes that train the push phase without equally loading the pull phase antagonists.

• Bilateral Simultaneous Vertical Push-Pull Both arms are trained simultaneously in a coordinated bilateral push-and-pull movement pattern — training the upper body in the bilateral symmetrical push pattern that functional activities require. Bilateral training also supports symmetrical upper body strength development and bilateral cortical motor engagement for stroke patients where bilateral simultaneous upper limb movement activates bilateral cortical circuits.
• Ergonomic Upper Body Contact Design Special design is adopted for the stressed parts of joints, which conforms to the principle of human morphology. The KS107's handle position, wrist alignment, and seat configuration are designed to place the shoulder, elbow, and wrist joints in biomechanically optimal positions throughout the vertical push-pull arc — minimising rotator cuff impingement risk, optimising pectoralis force vector alignment, and protecting the wrist and elbow joints from non-physiological loading during the exercise. uspto
• Safe for Post-Surgical and Neurological Patients The lowest-limit hydraulic resistance starting point makes the KS107 accessible to the full range of clinical rehabilitation patients — from post-mastectomy patients beginning very light pectoralis rehabilitation, to stroke patients with minimal voluntary upper limb push force, to elderly patients with significant upper body deconditioning — all of whom can begin KS107 training at truly minimal loading and progress systematically.