A fitness machine operable by a user. The fitness machine has a base that extends in a length direction, a width direction, and a height direction that are perpendicular to each other. A mobile portion is configured to support the user during operation of the fitness machine. A resilient body is supported by a frame and configured to provide a resistance against the mobile portion moving towards the base in the height direction. A fastener assembly couples the frame to the base, wherein the fastener assembly is configured to expand to prevent the frame from moving relative to the base during operation of the fitness machine.

A treadmill running platform structure is provided, which includes a running platform, a running board, and a running belt. The running board includes two soft elastic strips adapted to two side bars of the running platform, a plurality of rigid support strips provided between the soft elastic strips, and strip-shaped connection plates respectively connected to two ends of the rigid support strips. Two strip-shaped connection plates are connected above the rigid support strips, and the strip-shaped connection plates are respectively fixed to a corresponding end of each rigid support strip. The present disclosure can achieve buffering of the entire running board, especially by connecting the rigid support strips together through the strip-shaped connection plates, thereby avoiding an uneven transition of the rigid support strips when a runner steps on the running board, improving the comfort of the runner's feet, and reducing the noise of the treadmill.

A running platform of a treadmill and a treadmill are provided. The treadmill includes a roller, a servo motor, a running platform, and a belt wrapped around the roller. The running platform is of an integrally formed structure, an inside of the running platform is of a grid structure, and includes a base portion and a support portion. The belt is wrapped around the base portion, and a movement contact plane is formed on an upper side of the base portion. A transmission shaft of the servo motor is in transmission connection with the roller to drive the roller to rotate, thus driving the belt to move on the movement contact plane.