The Back Deltoid Machine, also known as the rear deltoid machine, is a piece of exercise equipment designed to strengthen the muscles in the shoulder blade area of the back. The design of this machine usually includes an adjustable seat and handles so that the user can adjust it to their body size, ensuring that the target muscle groups are properly stimulated when performing the movements.The rear deltoid training machine is specially designed for training the rear deltoid muscles. Other muscles involved in the movement are the rhomboids and trapezius. The chest support base and reclining seat help ease the physiological execution of movements and avoid muscle tension and stress in the lower back.Back Deltoids Machine has an air-cushioned seat, independent levers for bilateral or unilateral movements, and a spring balancer to reset the empty weight of the movement levers.