Abstract: A portable exercise device includes an elongated base sheet and at least one attachment mechanism secured to the elongated base sheet at preselected locations on one side of said base sheet. The at least one attachment mechanism has at least one apparatus to receive an appendage of a user of the device and to provide a mechanism by which to secure a variety of exercise accessories to the base sheet. A retention mechanism for selectively removably connecting the device to a door sufficiently secures the device to the door that it will permit vigorous repeated use of the device without causing the device to inadvertently separate from the door during use and will also permit rapid, facile removal of the device from the door.

Abstract: A method and apparatus for providing variable resistance in connection with exercise equipment uses vertically oriented weight plates that rare in a side-by-side arrangement and are selected by selectors in a selector assembly. A set of actuators are controlled by a computer processor and force the selectors into positions that engage and disengage with a corresponding set of weights. The computer is connected to a user interface that accepts input from a user and instructs the computer to adjust the amount of weight using the actuators and the corresponding selectors. The computer is also in communication with sensors that indicate whether the weights have been lifted successfully and automatically select a lower weight when the weights are not lifted successfully.

Abstract: A method and apparatus for providing variable resistance in connection with exercise equipment uses vertically oriented weight plates that rare in a side-by-side arrangement and are selected by selectors in a selector assembly. A set of actuators are controlled by a computer processor and force the selectors into positions that engage and disengage with a corresponding set of weights. The computer is connected to a user interface that accepts input from a user and instructs the computer to adjust the amount of weight using the actuators and the corresponding selectors. The computer is also in communication with sensors that indicate whether the weights have been lifted successfully and automatically select a lower weight when the weights are not lifted successfully.

Abstract: A portable exercise device includes an elongated base sheet and at least one attachment mechanism secured to the elongated base sheet at preselected locations on one side of said base sheet. The at least one attachment mechanism has at least one apparatus to receive an appendage of a user of the device and to provide a mechanism by which to secure a variety of exercise accessories to the base sheet. A retention mechanism for selectively removably connecting the device to a door sufficiently secures the device to the door that it will permit vigorous repeated use of the device without causing the device to inadvertently separate from the door during use and will also permit rapid, facile removal of the device from the door.

Abstract: A method and apparatus for providing variable resistance in connection with exercise equipment uses multiple weight plates that are selected by selector assemblies. A series of actuators that are not directly connected to the selector assemblies actuate the selector assemblies to engage and disengage the weight plates. The actuators are in communication with a controller, which is connected to a user interface console. The user interface console accepts input from a user and instructs the controller to adjust the amount of weight engaged by the selector assemblies based on input from the user and various sensors.

Abstract: A method and apparatus for providing variable resistance in connection with exercise equipment uses multiple weight plates that are selected by selector assemblies. A series of actuators that are not directly connected to the selector assemblies actuate the selector assemblies to engage and disengage the weight plates. The actuators are in communication with a controller, which is connected to a user interface console. The user interface console accepts input from a user and instructs the controller to adjust the amount of weight engaged by the selector assemblies based on input from the user and various sensors.