A method to automatically calibrate a load cell without the need to remove the loading on the load cell. This method takes advantage of the fact that weight stack strength equipment uses generally known discrete weight increments, and any signal drift in the load cell can be automatically recalibrated by offsetting the load cell signal to accurately reflect the expected discrete weight increments without the need for unloading the load cell and without the need for a manual recalibration of the load cells.

An exercise machine with a two directional pivoting user support assembly has a user support or platform which supports the user and pivots about a first pivot axis during an exercise movement, and is also pivotable about at least one second pivot axis to involve the user's core muscles in balancing and maintaining the user support in a stable position. A manually operable locking device with a simple flip switch lever is provided for selectively locking the user support against rotation about the second pivot axis, so that the user can easily chose whether to perform the exercise with a stable support or to add a level of difficulty by using the unstable seat mode and exercising core muscles during the exercise.

Exercise equipment comprises a resistance weight that is configured to oppose a given exercise motion via a cable system. An elongated cylindrical connector couples the resistance weight to the exercise equipment via the cable system. The elongated cylindrical connector comprises an externally threaded cylindrical surface that is engaged with a threaded recess on one of the exercise equipment and the resistance weight. A viewing window transversely extends into the threaded recess so that an operator can visually determine that the elongated cylindrical connector is fully engaged with the threaded recess when the externally threaded cylindrical surface is visible through said viewing window and so that an operator can visually determine that the elongated cylindrical connector is not fully engaged with the threaded recess when the externally threaded surface is not visible through said viewing window.

A biceps curl machine includes: a resistance element; a user support; a first movement element comprising: a first column; and a first connecting element comprising a first pivot point such that the user support is able to pivot about a first axis associated with the first connecting element, wherein the first connecting element is movably coupled to the first column such that the first connecting element is able to move along a first path defined by the first column; and a second movement element comprising: a second column; and a second connecting element comprising a second pivot point such that the user support is able to pivot about a second axis associated with the second connecting element, wherein the second connecting element is movably coupled to the second column such that the second connecting element is able to move along a second path defined by the second column.

A liquid buoyancy muscle training device includes a liquid receiving tank receiving and holding liquid therein. A buoyantly submergible member is buoyantly submergible in the liquid contained in the liquid receiving tank and includes a regulation chamber formed therein. A bottom pulley is mounted inside the liquid receiving tank. A rope is connected to the buoyantly submergible member and wrapped around the bottom pulley and extends upward to project outside the liquid receiving tank. A liquid regulation tank is connected through a liquid supply tube to the regulation chamber to allow liquid to flow therebetween. A gas supplier is connected through a gas supply tube to the regulation chamber to selectively supply gas into the regulation chamber to change a ratio between liquid and gas inside the regulation chamber so as to change buoyance applied to the buoyantly submergible member by the liquid contained in the liquid receiving tank.

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.

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.

Apparatus (10) for performing an arm curl exercise comprising: a frame (12), a seat (16), an elbow pad (19) an input arm assembly (24) interconnected to a resistance mechanism (42) and a manually graspable mechanism (30h), the seat (16) being arranged relative to the input arm assembly (24) to position the user in a user start position (USP) that enables the user to manually engage the manually graspable mechanism (30h) with a posterior surface (PSE) of the user's elbow user's elbow (13e) engaged with the engaging surface (ES) of the elbow pad (19), the input arm assembly comprising a first arm (30r) and a second arm (30f) pivotable around a first linear axis (AA).

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.

Disclosed herein are various embodiments of an exercise apparatus. In certain embodiments, an exercise apparatus comprises a frame and a seat assembly, the seat assembly comprising a seat, the seat configured to move between a first position and a second position, wherein the first position accommodates use of the exercise apparatus by a user sitting on the seat and wherein the second position accommodates use of the exercise apparatus by a user sitting in a wheelchair. The seat assembly may be pivotably coupled to the frame. The seat assembly may comprise a stop configured to inhibit movement of the seat, and may further comprise a biasing element that is biased to disengage the stop.