An exercise machine including a vertical post and an adjustable pulley. The vertical post includes a plurality of engagement holes. The adjustable pulley is slideably connected to the vertical post. The adjustable pulley includes a pull pin and a lock. The pull pin is selectively engageable with one of the plurality of engagement holes. In response to the pull pin being engaged with an engagement hole, movement of the adjustable pulley relative to the vertical post is restricted. The lock is selectively engageable with the pull pin. In response to the lock being engaged with the pull pin, movement of the pull pin is restricted.

An exercise machine comprises an arm support, including: a carriage configured to slide within a track attached to the exercise machine; and a support assembly that floats the carriage relative to the track, wherein the support assembly is disengaged by the application of force via the arm. An exercise machine comprises a rotatable column, wherein the column supports an arm, and a gear detent mechanism to support a discrete number of positions for the rotatable column. An exercise machine comprises a tiltable arm, and a mechanism to support a discrete number of positions for the tiltable arm.

A resistance system, which can be suitable for incorporation in exercise equipment, is a hybrid resistance assembly having at least a first and a second resistance unit. The first resistance unit can be of a first type and the second resistance unit can be of a second type. The first resistance unit can be an inertial resistance unit, which incorporates an inertial load that creates resistance influenced by the inertia of a movable mass, such as a rotatable flywheel. The second resistance unit can be a static or non-inertial resistance unit, such as a displacement resistance unit, which incorporates a load that creates resistance influenced by displacement (e.g., linear or rotational displacement) of an input to the displacement resistance unit.

A lightweight, mobile treadmill attachment designed for effective weight reduction, anti-gravity suspension is disclosed. The treadmill attachment provides a system in which an elastic cord is suspended within a frame that attaches to the arms of a treadmill. The elastic cord imparts an equalized lifting force throughout the suspension system by a rope camming system to a user to provide an effective weight loss and anti-gravity functionality.

An exercise machine has a resistance mechanism that is movable with respect to a stationary frame into and between a rest position and an active position and a pulley system coupled to the resistance mechanism and being operable by a user performing an exercise motion. Operation of the pulley system moves the resistance mechanism from the rest position to the active position, against a resistance force from the resistance mechanism. Releasing the pulley system allows the resistance force to automatically move the resistance mechanism back towards the rest position. A dampening device has an inertial switch that causes the dampening device to automatically dampen movement of the resistance mechanism from the active position towards the rest position when the pulley system is suddenly released.

An adjustable resistance exercise machine for providing variable resistance forces on a pull cable extending from the machine. The adjustable resistance exercise machine generally includes a plurality of power springs that may be selectively engaged using a cam mechanism. By engaging springs with different forces, the resistance may be adjusted incrementally as preferred for performing different exercises. The adjustable resistance exercise machine may be connected to various structures, either below or above an exerciser, to allow the exerciser to choose whether to pull the pull cable up or down during exercise.

An exercise apparatus with an adjustable rotating element around which a force transferring material wraps either clockwise or counterclockwise to provide bidirectional rotational resistance for exercising. The force transferring material is preferably guided to remain in close proximity to the rotating element while wrapping around the rotating element.

An exercise apparatus for performing a back extension exercise comprising: a frame, a seat having a seating surface and a pelvic stabilization pad having a lower back engagement surface, an input arm assembly interconnected by a first interconnection to a first resistance mechanism, the input arm assembly including a manually graspable mechanism and being arranged on the apparatus such that the input arm assembly is pivotable beginning from a start motionless position along a path of travel toward the pelvic stabilization pad under resistance exerted by one or both of the resistance mechanisms, wherein the first resistance mechanism is adapted to increase resistance as the degree of pivoting of the input arm assembly increases along the path of travel away from the start motionless position rearwardly toward the pelvic stabilization pad.

A portable lower limb therapy device having a support base and a pulley system. The support base includes an exterior surface suitable to slide on smooth surfaces and an interior surface suitable to receive and conform to a foot of a user. The pulley system defines a closed force transfer system that is integrated with the support base. The pulley system employs a pair of cord members which run along the right and left sides of the support member, a cross member positioned above the support member and connected at each end to one of the cord members, and two adjustable handle mechanisms. The pulley system is configured to transfer force applied behind and above the foot of a user that is in the support base to the support base.

An adjustable resistance exercise machine for providing variable resistance forces on a pull cable extending from the machine. The adjustable resistance exercise machine generally includes a plurality of power springs that may be selectively engaged using an adjustment mechanism. By engaging springs with different forces, the resistance may be adjusted incrementally as preferred for performing different exercises. The adjustable resistance exercise machine may be connected to various structures, either below or above an exerciser, to allow the exerciser to choose whether to pull the pull cable up or down during exercise.