A multifunctional kinetic mechanism includes a base including a slant tube, a counterweight unit including a joint shaft rotatably connected to the slant tube of the base, a barbell shaft having a first end piece connected to the joint shaft and a second end piece opposite to the first end piece and a counterweight attached to the second end piece of the barbell shaft, and an operating unit including a main frame, a sleeve located at a front side of the main frame and sleeved onto the second end piece of the barbell shaft, two grips respectively pivotally mounted at an opposing rear side of the main frame and two shoulder cushion pads mounted at a bottom side of the main frame between the sleeve and the two grips. Thus, a user can operate the operating unit to move the barbell shaft to train different muscle groups.

An elliptic-orbit treadmill has a front-end drive portion and a middle drive portion configured on the front end of the pedal, the middle drive portion being pivotally linked to the bottom end of the handle bar on the same side. Each transmission bar set includes a transverse connecting rod and a vertical connecting rod pivotally connected to each other in an elbow style, the rear end of the transverse connecting rod being pivotally connected to the middle section of the handle bar on the same side, while the bottom end of the vertical connecting rod being pivotally connected to the front-end drive portion of the pedal on the same side. The crank provided on the transverse driven shaft at the center of the flywheel is pivotally connected to the middle section of the transverse connecting rod provided on the transmission bar set on the same side.

The current invention relates to an exerciser, especially a crawling exerciser, comprising two hand slides each containing a wheel and two leg slides each containing a wheel, characterized in that, characterized in that it also contains components of a linear parallel track, wherein both the hand slides and the leg slides slide in the track and a damping structure is installed on the wheels or between the wheels and the track. The exerciser of the current invention is convenient, flexible, easy to control, and is easy to perform alternate movements of the hands and legs. It does not damage the floor, carpet or ground, and is very appropriate for indoor application.

A linear motion synchronizing mechanism is for an exercise assembly having elongated first and second rocker arms that pivot with respect to each other about a first pivot axis. A first roller is retained on a first roller supporting member and a second roller retained on a opposing second roller supporting member. The first and second rollers are configured to roll along opposite sides of a linear frame member as the body moves in the first and second directions. A tensioner applies a tensioning force between the first roller supporting member and second roller supporting member so that compression forces are applied on the first and second rollers. The compression forces cause the first and second rollers to mechanically resist pivoting of the first and second rocker arms with respect to each other about the first pivot axis.

A multifunctional kinetic mechanism includes a base including a slant tube, a counterweight unit including a joint shaft rotatably connected to the slant tube of the base, a barbell shaft having a first end piece connected to the joint shaft and a second end piece opposite to the first end piece and a counterweight attached to the second end piece of the barbell shaft, and an operating bar connected to the second end piece of the barbell shaft. Thus, by means of the multi-direction operation of the joint shaft, the user can operate the operating bar to move the barbell shaft and the counterweight in exercising the operation modes of squatting, lunging and arm lifting to train different muscle groups.

A multifunctional kinetic mechanism includes a base including a slant tube, a counterweight unit including a joint shaft rotatably connected to the slant tube of the base, a barbell shaft having a first end piece connected to the joint shaft and a second end piece opposite to the first end piece and a counterweight attached to the second end piece of the barbell shaft, and an operating unit including a main frame, a sleeve located at the front side of the main frame and sleeved onto the second end piece of the barbell shaft, two grips respectively pivotally mounted at the opposing rear side of the main frame and two shoulder cushion pads mounted at the bottom side of the main frame between the sleeve and the two grips. Thus, the user can operate the operating unit to move the barbell shaft to train different muscle groups.

A method and apparatus guide inclined movement of a left foot pad in a fore-aft direction on a first side of a longitudinal centerline of an exercise apparatus and inclined movement of a right foot pad in the fore-aft direction on a second side of the longitudinal centerline of the exercise apparatus such that the right foot pad and the left foot pad are transversely spaced from the longitudinal centerline by a first distance when proximate to a front of the exercise apparatus and are transversely spaced from the longitudinal centerline by a second distance greater than the first distance when proximate to a rear of the exercise apparatus.

An elliptic-orbit treadmill has a front-end drive portion and a middle drive portion configured on the front end of the pedal, the middle drive portion being pivotally linked to the bottom end of the handle bar on the same side. Each transmission bar set includes a transverse connecting rod and a vertical connecting rod pivotally connected to each other in an elbow style, the rear end of the transverse connecting rod being pivotally connected to the middle section of the handle bar on the same side, while the bottom end of the vertical connecting rod being pivotally connected to the front-end drive portion of the pedal on the same side. The crank provided on the transverse driven shaft at the center of the flywheel is pivotally connected to the middle section of the transverse connecting rod provided on the transmission bar set on the same side.

A foldable leg lift machine includes a base unit, a main handle unit, two drive levers, two pedals, and a linkage mechanism. The base unit includes a first stand, a second stand pivotally connected with the first stand, and two third stands pivotally connected with the first stand. The main handle unit is connected with the first stand and provided with a handgrip. Each of the drive levers is pivotally connected with one of the third stands. Each of the pedals is pivotally connected with one of the drive levers. The linkage mechanism includes a swing base pivotally mounted on the third stands, and two linkage rods each pivotally connected with the swing base and pivotally connected with one of the two drive levers.

A foldable leg lift machine includes a base unit, a main handle unit, two drive levers, two pedals, and a linkage mechanism. The base unit includes a first stand, a second stand pivotally connected with the first stand, and two third stands pivotally connected with the first stand. The main handle unit is connected with the first stand and provided with a handgrip. Each of the drive levers is pivotally connected with one of the third stands. Each of the pedals is pivotally connected with one of the drive levers. The linkage mechanism includes a swing base pivotally mounted on the third stands, and two linkage rods each pivotally connected with the swing base and pivotally connected with one of the two drive levers.