Provided is a water-resistance rowing exercise machine, comprising a bracket, a water tank fixed to the bracket, a linkage mechanism, a rotation angle adjustment mechanism. The water tank is internally provided with a first impeller and a second impeller. The first impeller comprises a first plate portion and a plurality of first blades distributed on the periphery of the first plate portion. The second impeller comprises a second plate portion and a plurality of second blades distributed on the periphery of the second plate portion. The rotation angle adjustment mechanism is configured to adjust a relative rotation angle between the first impeller and the second impeller the first blades and the second blades may approach to or depart from each other. The distance between the first blades and the second blades can be adjusted by adjusting the relative rotation angle between the first impeller and the second impeller.

Provided is a water-resistance rowing exercise machine, comprising a bracket, a water tank fixed to the bracket, a linkage mechanism, a rotation angle adjustment mechanism. The water tank is internally provided with a first impeller and a second impeller. The first impeller comprises a first plate portion and a plurality of first blades distributed on the periphery of the first plate portion. The second impeller comprises a second plate portion and a plurality of second blades distributed on the periphery of the second plate portion. The rotation angle adjustment mechanism is configured to adjust a relative rotation angle between the first impeller and the second impeller the first blades and the second blades may approach to or depart from each other. The distance between the first blades and the second blades can be adjusted by adjusting the relative rotation angle between the first impeller and the second impeller.

A training, rehabilitation, and recovery system comprises an exercise apparatus including a user interface member coupled to a plurality of links and joints, brakes capable of resisting movement of at least a subset of the links or joints, and sensors capable of sensing movement at the joints or the user interface member. The system also includes a processor configured to receive from the sensors positional data of the links or joints over an initial movement of the apparatus by a user, from which positional coordinates of the user interface member are calculated and a reference trajectory is established. An end space is defined based on the reference trajectory. Over a subsequent movement of the apparatus by the user, the processor receives additional positional data and determines a completion of a repetition based on the positional coordinates of the subsequent movement and the defined end space.

A training, rehabilitation, and recovery system comprises an exercise apparatus including a user interface member coupled to a plurality of links and joints, brakes capable of resisting movement of at least a subset of the links or joints, and sensors capable of sensing movement at the joints or the user interface member. The system also includes a processor configured to receive from the sensors positional data of the links or joints over an initial movement of the apparatus by a user, from which positional coordinates of the user interface member are calculated and a reference trajectory is established. An end space is defined based on the reference trajectory. Over a subsequent movement of the apparatus by the user, the processor receives additional positional data and determines a completion of a repetition based on the positional coordinates of the subsequent movement and the defined end space.

Controlling an exercise machine includes receiving a stream of measurements of extension of a component of an exercise machine. It further includes detecting a first phase of a repeated motion. It further includes detecting a transition to a second phase of the repeated motion. A time constraint is applied to the detection of the transition to the second phase of the repeated motion. It further includes controlling a resistance associated with the second phase of the repeated motion.

An aqua resistance dumbbell comprises a tubular wall that provides a bore for receiving a user's hand from each end of the bell. A rod is located within the bore and extending laterally across the bore to be gripped by a user with one or both hands from one or both ends of the bore. The dumbbell has a plurality of longitudinal fins extend along the tubular wall on an outer side of the tubular wall, and at least one lateral fin that extends laterally at least part way around the tubular wall. An aqua resistance fin assembly comprises two fin components and at least one fastening member for fitting the fin components to a user's limb in a side-by-side configuration around the limb. Each fin component comprises a base adapted to fit against a user's limb and adapted to be secured to the user's limb by the fastening member, and at least two longitudinal fins and at least one lateral fin on an outer side of the base.

An enhanced stability forearm builder is disclosed herein. The enhanced stability forearm builder includes a first handle bar and a second handle bar both having a first end and a second end, the first handle bar and second handle bar both being configured to be gripped by a hand of a user. A first end cap is removably attached to the first end of the first handle bar. The first handle bar and the second handle bar are attached by a connector. A ratchet system is located on the first handle bar and the second handle bar and is configured to allow rotation of the first handle bar and the second handle bar. A strap is coupled to the connector and configured to provide tension and lifting power. The enhanced stability forearm builder may be useful for building muscle on the forearm.

An exercise bicycle configured to provide fan-based resistance and a fan wheel thereof are disclosed. The fan wheel includes a hub and a plurality of vanes. The hub includes a pivot portion and a plurality of mounting portions. The mounting portions are arranged in an annular manner around a center defined by the pivot portion and each have a groove. Each vane includes a connecting end inserted into a corresponding one of the mounting portions and fixedly connected to the corresponding mounting portion by a plurality of fasteners. The fan wheel is thus easy to manufacture and assemble.

A passive-type treadmill is disclosed which includes a closed-loop belt rolling around two spaced apart rollers for providing a running platform, a first and a second handrail parallel to each other and extended upward angling to a surface of the closed-loop belt at larger than 45 degrees, and a towel rack having at least a first and a second clip for stretching a towel between the first and the second handrail.

The present invention relates to a weight exercise machine and training methods for development and strengthening of muscles and joints with exercises aimed for overcoming a counteracting force with or without measuring equipment, more specifically, to training devices and training methods with the eccentric phase of the training. The weight exercise machine comprises a frame bearing a seat for a user, the seat fastened to the frame; a touch screen connected with a control unit for controlling training modes and monitoring training parameters; an actuator controlled by the control unit; and an interface interacting with the user. Thus, efficiency of weight training can be improved.