A weight training assembly includes a frame includes a first rail to which a slide member and multiple weights are connected. The slide member has a main rod with multiple through hole. Each weight has a transverse holes and longitudinal holes, each transverse hole has a pin received therein, and each longitudinal hole has a push rod received therein. A first spring is located between the pin and the weight. A second spring is located between the push rod and the weight. A push unit includes a push member which is located corresponding to the front sides of the weights. When the push member pushes the push rod from the first position to the second position, the pin moves from the third position to the third position and extends through one through hole to lock the weight to the main rod.

A permanently affixed and travelling selector pin, car and weight plate selection mechanism for use with physical fitness equipment is disclosed including a segmented track and/or cut out cavern within the plate body for the car to travel within in either vertically or horizontally in order to select a different weight plate or cumulatively, more or less weight for an exercise. The selector pin and car mechanism features a selector pin which is not removable from the car and is inserted through the car which is contained by the track and or plate body shape and into a throughbore in the weight plate in order to engage with the selector stem.

A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing upright, and having through-going openings. Neighbouring weight disks have mutually cooperating connecting arrangements which axially interconnect the weight disks but which permit radial separation. The projection lengths of the pins are stepwise selectable in order thereby to permit selection of the number of weight disks carried on the handle. The handle has, in opposing ends, connecting arrangements for interconnecting with the connecting arrangements of the innermost weight disks in the base assembly. Further, the space between the connecting arrangements of the handle is free through 360° about the handle throughout its entire length, the openings of the weight disks being centrally located.

The present invention provides a competitive weightlifting system capable of interacting with and comparing weightlifting performances of multiple users, and creating competition between such users by displaying a ranked list of performances by those users. The system may include a frame for supporting and guiding a lift bar, sensors mounted to the frame for measuring and refereeing the performance of a user, a controller housed in the frame for tracking and ranking user performances with an interface for creating and logging into user profiles, and a communication device for sharing user performance data with other remote competitive weightlifting systems (e.g., competitive weightlifting systems in other gyms or homes) in order to create a wide-ranging competition between, and ranked leaderboard of, the many users.

The present invention is directed, in part, to a system and methods for combining newly designed cardiovascular equipment with the added features of an upper body weight training regimen in order to provide a user a full body workout, cardiovascular exercise and weight training simultaneously. The invention does so by employing either a weight tray apparatus configured to newly designed cardiovascular equipment or machine or through the use of an adjustable weight training apparatus combined with the newly designed cardiovascular equipment or machine. More specifically, the present invention relates to a system and methods for combining newly designed cardiovascular equipment including stationary and recumbent bikes, elliptical machines, treadmills and stair steppers, with a tray apparatus that allows a user to employ free weights. The invention further relates to a system and methods for combining newly designed cardiovascular equipment including stationary and recumbent bikes, elliptical machines, treadmills and stair steppers that are configured with an adjustable weight training apparatus that allows a user to build upper body muscle groups simultaneously with cardiovascular exercise, in effect, providing a full body workout.

Provided is a weight exercise device. The weight exercise device includes: an exercise body in which a motion is generated according to a weight exercise of a user; a sensor configured to detect the motion of the exercise body; a display configured to output a user interface screen; and a processor configured to control the display to display, on the user interface screen, a first indicator indicating an exercise state of the user corresponding to the detected motion and a second indicator indicating an exercise guide that is recommended when exercising using the exercise body, wherein the processor is further configured to control the display such that a position of the second indicator is adaptively changed based on the exercise state of the user.

An adjustable weight dumbbell includes a dumbbell bar, a handle, a dial, a dumbbell rack assembly, weight adjustment assemblies, and weight plates. The dumbbell rack assembly includes inner and outer support frames and a connecting frame fixed with the support frames. The inner support frame is rotatably cooperated with the handle, the outer support frame and the dumbbell bar. The inner support frame includes a locking mechanism for locking a rotation of the inner support frame relative to the dial. The weight adjustment assemblies connected on the connecting frame include a weight adjustment housing, a cam rotatably disposed in the housing, and a weight connecting assembly. The cam is sleeved on the dumbbell bar and includes protruding teeth arranged in sequence according to the weight. The weight connecting assembly is cooperated with the protruding teeth, and is driven by the protruding teeth to connect with the corresponding weight plate.

A weight lifting device including a housing having first frame having first vertical channel for accommodating first weight holding means and second frame having second vertical channel for accommodating second weight holding means, wherein first vertical channel and second vertical channel are dimensioned so that first weight holding means and second weight holding means can move up and down, when in use, in first vertical channel and second vertical channel, respectively. The weight lifting device also includes a handle bar pivotably connectable to first weight holding means and to second weight holding means from first end of handle bar and second end of handle bar, respectively. The weight lifting device further includes at least one of: first holding bar, second holding bar, first pivotable arm and second pivotable arm, arranged between pivotably connectable handle bar and first weight holding means and second weight holding means.

A weight assist device may be used with vertically stacked plates of an adjustable weight stack. The weight assist device can be used to add weight plates to increase the weight beyond what is provided by the vertically stacked plates.

Provided are an exercise management method and server thereof. The exercise management method includes providing a notification that an exercise mode is set with respect to a first exercise machine from among a plurality of exercise machines and setting a second exercise machine arranged within a predetermined distance from the first exercise machine from among the plurality of exercise machines in a lock mode.