A transmission system for a treadmill is provided, which includes a primary transmission wheel, a secondary transmission wheel, a metal disk and a magnetic assembly; wherein the primary transmission wheel is rotated coaxially with a chain wheel of the treadmill; the secondary transmission wheel is connected with the primary transmission wheel through a first belt; the metal disk is connected with the secondary transmission wheel through a second belt; the magnetic assembly is rotatably connected to a frame of the treadmill, and the magnetic assembly is movably close to or away from a center of the metal disk to provide a resistance to the metal disk; and the magnetic assembly is connected with a handle of the treadmill. Through the transmission system for the treadmill of the present application, the resistance to the movement may be changed to meet the user's demand for different exercise intensity.

A spinning bike includes a transmission wheel, a flywheel and a resistance braking device. The transmission wheel is disposed on the bike frame. The flywheel is made of the metal material, and driven by the transmission wheel to rotate. The resistance braking device includes a magnet assembly, a resistance adjustment member, a control member, a manual brake assembly and a resistance control assembly. The resistance adjustment member is connected to the bike frame. The magnet assembly is pivotally connected on the resistance adjustment member. The control member is connected to the magnet assembly. The manual brake assembly is disposed on a handlebar of the bike frame, and includes a brake handle and a brake control wire. The resistance control assembly includes a motor, a control interface and a resistance control wire.

An exercise machine is disclosed. The exercise machine comprises a frame, a first motor, a second motor, a first arm, and a second arm. The frame includes a front side and a back side. A longitudinal axis of the first motor passes through the front side and the back side of the frame. The first motor drives a first cable and the second motor drives a second cable. The first arm positions the first cable and the second arm positions the second cable. The frame is capable of being wall mounted.

Sensor data is collected from a sensor monitoring a tension generating device of an exercise machine. The sensor data is analyzed to determine whether the sensor data is within a specification. In an event the sensor data is not within the specification, an error stop mode is entered for the tension generating device.

A constant tension mechanism of a training machine is provided, including: a base, configured to be connected to a body of the training machine; an elastic member, abutted against the base; and a tension mechanism, including a movable member movably connected with the base and abutted against the elastic member, and at least one tension pulley rotatably disposed on the movable member and configured to urge a belt connected to the body; wherein relative to the base a direction in which the elastic member forces the movable member and a direction in which the at least one tension pulley moves point toward the same direction.

A leg muscle, abdominal muscle, and spinal exercise device adapted for imparting curvature to a lumbar or sacral spine of a user and for manipulating the spine and intervertebral discs with decompression force includes a frame for placement on a floor. The frame has a top surface and a bottom surface, wherein the top surface and bottom surface are in a spaced apart relationship forming a hollow portion there between. At least one inflatable bladder is carried by the top surface of the frame. A body strap attachment passes through the frame in non-fixed relationship and is partially disposed within the hollow portion for encompassing the user's thoracic-sacral spinal region and securing said frame. An elongate stirrup strap member is attachable to the body strap attachment thereby connecting to the user's spinal region. A stirrup is attachable to the stirrup strap member distal end.

A twisting exerciser includes a base with a first shaft, a second shaft and a stop member respectively connected thereto. A first swingable unit and a second swingable unit are respectively and pviotably connected to the first and second shafts. The first swingable unit has a pad and first fan-shaped gear. The second swingable unit has a handle assembly and a second fan-shaped gear which is engaged with the first fan-shaped gear. The user holds the handle assembly, and the upper body and the lower body swing in opposite direction by the engagement between the first and second fan-shaped gears. The stop member limits the angle that the first fan-shape gears swings. The user may sits in the pad or stands on the pad to operate the twisting exerciser. The twisting exerciser is simple and safe.

An exercise apparatus includes a pair of apparatuses wearable on feet of a user. Each apparatus is configurable between expanded configurations and compressed configurations to simulate a selected motion when the user wearing the pair of apparatuses travels by foot. One of the apparatuses can move towards an expanded configuration while the other apparatus moves towards a compressed configuration.

An exercise machine is disclosed. The exercise machine comprises a pancake motor. The exercise machine comprises a torque controller coupled to the pancake motor. The exercise machine comprises a high resolution encoder coupled to the pancake motor.

Disclosed is an omnidirectional treadmill which has several connected belt units with supporting frames and endless belts which are moved revolving in the first spatial direction. In the second spatial direction, the endless belts of the belt units are moved. The endless belts are driven in the second spatial direction preferably by gear wheels mounted on rolls and by a toothed shaft. The movement of all endless belts is synchronized by coupling with special tooth form crown gears arranged between the belt units.