The present invention extends to a re-configurable multi-purpose exercise device. In general, aspects include a re-configurable multi-purpose exercise device that can be configured as an abdominal roller, a pair of pushup stands, or a jump rope. Some aspects include a first roller and a second roller that can attach to one another by mating extending members formed on each respective roller with slots formed on each respective roller. A first handle and a second handle can attach to one or another of the respective rollers by either attaching to the extending members on the rollers or inserting through a hole formed in the rollers. A rope can connect on each end to the first handle and the second handle to form a jump rope. Additionally, some aspects include a two-piece cavity configured for storing the rope.

A reversible resistance exercise machine for reversing the direction of applied resistance against a movable platform of an exercising machine. The exercise machine has a frame, a carriage movably positioned upon the frame, and a plurality of biasing members. A plurality of first tension connectors are accessible near the first end of the carriage and are adapted for removably attaching selected biasing members near the first end of the carriage to resist motion of the carriage in the first direction. A plurality of second tension connectors are accessible near the second end of the carriage and are adapted for removably attaching selected biasing members near the second end of the carriage to resist motion of the carriage in the second direction. A user selectable amount of force may be applied to the carriage to resist movement in either of the first direction and the second direction.

An exercise machine with electromagnetic resistance selection for changing exercise resistance settings by engaging more or fewer resistance biasing members using a electromagnets. An example implementation includes a movable carriage configured to move substantially along the length of one or more rails. A plurality of resistance biasing members are removably attachable between a stationary biasing member bracket affixed to the machine structure and the movable carriage. A controller changes the resistance settings against the movable carriage by electrically attaching or detaching any preferred number of resistance biasing members between the machine structure and movable carriage.

An exercise machine resistance adjustment system for providing an exerciser the ability to immediately adjust the resistance force by changing their body position on the movable carriage or end platforms. The exercise machine resistance adjustment system generally includes a frame, a carriage movably positioned on the frame, a spring connected to the carriage to apply a biasing force to the carriage, one or more left projections within the carriage adapted for a left hand of an exerciser to grasp, and one or more right projections within the carriage adapted for a right hand of an exerciser to grasp. The exerciser is able to efficiently adjust the amount of resistance force applied to the carriage by repositioning their hands (or feet) from a first set of projections at a first distance to a second set of projections at a second distance from the first end of the exercise machine.

An exercise machine reversible resistance system for reversing the directional force of resistance against an exercise implement before, during, or after the performance of a routine of one or more exercises. The exercise machine reversible resistance system generally includes a frame, an elongated member movably positioned upon the frame, wherein the elongated member has a first run and a second run, a resistance device that applies a resistance force to the elongated member in a single direction, an exercise implement movably connected to the frame and a clutch connected to the exercise implement. The clutch is adapted to selectively engage the first run or the second run of the elongated member for selective control of the resistance direction of the exercise implement.

An exercising apparatus for exercising at least one limb, having a supporting frame and at least one crank which is arranged on a rotation shaft assigned to the supporting frame, and having at least one limb support which can be fastened to the at least one crank at different radial distances from the rotation shaft. A detector is provided for detecting the radial distance of the at least one limb support from the rotation shaft. The invention further relates to a limb support and to a method for determining the force acting on a limb support of an exercising apparatus.

The invention discloses an elasticity adjusting mechanism of an exercise equipment which includes a base, a staggered frame, an adjusting socket, an elastic body and force exerting member. The base and the staggered frame pivot with each other and constitute the main structure of the elasticity adjusting mechanism of the exercise equipment. The staggered frame extends outwardly from the base and includes an extended socket and a plurality of fixed portions, the fixed portions are disposed on the staggered frame and with different distances to the extended socket. When the adjusting socket is selectively assembled with one of the fixed portions at different positions, the elastic body passing through the extended socket and the adjusting socket changes its elasticity in accordance with extension amount.

An exercise machine resistance adjustment system for providing an exerciser the ability to immediately adjust the resistance force by changing their body position on the movable carriage or end platforms. The exercise machine resistance adjustment system generally includes a frame, a carriage movably positioned on the frame, a spring connected to the carriage to apply a biasing force to the carriage, one or more left projections within the carriage adapted for a left hand of an exerciser to grasp, and one or more right projections within the carriage adapted for a right hand of an exerciser to grasp. The exerciser is able to efficiently adjust the amount of resistance force applied to the carriage by repositioning their hands (or feet) from a first set of projections at a first distance to a second set of projections at a second distance from the first end of the exercise machine.

An exercise machine carriage handle system for providing handles for an exerciser to grasp with their hands thereby expanding the type of exercises that may be performed. The exercise machine carriage handle system generally includes a frame having a track, a carriage movably connected to the track, a bias member connected between the frame and the carriage, a first handle connected to the carriage near the first side, and a second handle connected to the carriage near the second side. The first handle and second handle are adapted for grasping with a first hand and a second hand respectively of a user during the performance of an exercise on the exercise machine.

An exercise machine handle indicia system for facilitating efficient and proper exercise movements by an exerciser. The exercise machine handle indicia system generally includes a frame, a carriage movably positioned upon the frame, a bias member connected between the carriage and the frame that applies a bias force upon the carriage, and a first handle and a second handle connected to the frame near the first end of the frame. The first handle includes a first indicia to indicate where to position a first hand of an exerciser to perform a first exercise and the second handle includes a first indicia to indicate where to position a second hand of the exerciser to perform the first exercise. During the performance of an exercise, the exerciser is instructed by a human instructor or an electronic device which indicia on the handles to position their hands or other body parts.