A training device includes a force receiving component, a location detector, a resistance generator, and a controller. The force receiving component moves along a closed trajectory. The location detector is configured to detect a location of the force receiving component in the closed trajectory and to output a location signal. The resistance generator is configured to exert a resistance on the force receiving component. The controller controls the resistance generator to adjust the resistance based on the location signal.

A system for rehabilitation is disclosed. The system for rehabilitation includes one or more electronic devices comprising one or more memory devices storing instructions, one or more network interface cards, and one or more sensors, wherein the one or more electronic devices are coupled to a user. The system for rehabilitation further includes one or more processing devices operatively coupled to the one or more memory devices, the one or more network interface cards, and the one or more sensors. The one or more processing devices are configured to execute the instructions to receive information from the one or more sensors. The one or more processing devices are further configured to execute the instructions to transmit the information to a computing device controlling an electromechanical device, via the one or more network interface cards.

[Object] More efficient evaluation of the motions of multiple users is made possible. [Solving Means] An information processing apparatus is provided that includes a motion estimation section configured to analyze data recorded of motions of multiple users so as to estimate the motions, a tag addition section configured to add tag data regarding the motions to at least part of the recorded data, and a motion evaluation section configured to evaluate the motions by comparing the motions with reference motions on the basis of the tag data.

A fitness training apparatus comprising: a base, at least one retractable line provided in or on the base, and a load generator provided in or on the base for applying a selectively adjustable load to the at least one retractable line. The retractable line has a free end region for operation by a user, wherein the at least one retractable line is configured and arranged to be extended from a retracted state in or on the base to an extended state upon application of a force to the free end region of the retractable line by the user. The load applied to the retractable line by the load generator resists or acts against the force applied to the free end region by the user for extending the retractable line from the retracted state to the extended state.

In response to physical connection of an exercise accessory with a portion of an exercise machine, an identifier of the portion of the exercise machine is received. A signal including the identifier of the portion of the exercise machine is transmitted.

An exercise system includes a load bearing element having a control element. It further includes a resistance mechanism responsive to a signal from the control element. The signal from the control element is selectively rejected based on state information relating to a state of the load bearing element.

An exercise accessory includes a load bearing shaft. It further includes a ring-shaped actuator oriented substantially concentrically to the shaft that is responsive to radial pressure from a user. The radial pressure from the user causes a control signal to be transmitted from the exercise accessory to an exercise machine.

An auxiliary drive for a training device, comprising a first force measuring device, a control device, and a drive unit, wherein the control device determines a target force F.sub.S,max, the first force measuring device determines an actual force F.sub.S which is applied to a main traction means and which is caused by an acceleration of a movable mass connected to the main traction means. The first force measuring device also transmits the determined actual force F.sub.S to the control device, and the control device also compares the actual force F.sub.S with the target force F.sub.S,max and controls the drive unit such that, if the actual force F.sub.S exceeds the target force F.sub.S,max, an auxiliary force F.sub.Z having a component that offers resistance to a gravitational acceleration acts on the movable mass by connection of the drive unit to the movable mass.

A pedal assembly for electromechanical exercise or rehabilitation of a user is disclosed and can include pedals to engage appendages of a user. A spindle supports each pedal and has a spindle axis. A pedal arm assembly is located between the spindle and a rotational axle of the equipment. The pedal arm assembly is radially offset from the spindle axis to define a range of radial adjustability for the pedal relative to the rotational axle. The pedal arm assembly can include an electrically-actuated coupling assembly to adjust the radial position of the pedal in response to a control signal, and regulate motion of the user engaged with the pedals.

A fitness training apparatus comprising: a base, at least one retractable line provided in or on the base, and a load generator provided in or on the base for applying a selectively adjustable load to the at least one retractable line. The retractable line has a free end region for operation by a user, wherein the at least one retractable line is configured and arranged to be extended from a retracted state in or on the base to an extended state upon application of a force to the free end region of the retractable line by the user. The load applied to the retractable line by the load generator resists or acts against the force applied to the free end region by the user for extending the retractable line from the retracted state to the extended state.