Abstract: An exercise machine for performing leg curl and leg extension movements includes: a frame configured to rest on an underlying surface; an upper leg-supporting assembly pivotally interconnected with the frame, the upper leg-supporting assembly having a seat pad; a torso-supporting assembly pivotally interconnected with the frame and with the upper leg-supporting assembly, the torso-supporting assembly having a backrest pad; a leg curl assembly arm pivotally interconnected with the frame about a first pivot axis; a leg extension assembly arm pivotally interconnected with the frame about a second pivot axis; a resistance-imparting unit coupled with the leg curl movement arm and the leg extension movement arm; and a conversion mechanism interconnected with the frame and/or the torso-supporting assembly and the upper leg-supporting assembly.

Abstract: An exercise machine for exercising muscles in the back of an exerciser, includes: a frame; a seat assembly attached to the frame; a movement arm pivotally attached to the frame and movable along a stroke path between an upper forward position and a lower rearward position; a resistance-imparting unit operatively connected with the movement arm to provide resistance to the movement arm as it moves from the forward position to the rearward position; a pair of handles to be grasped by the exerciser; and a pair of extension members, each of which is attached to a respective handle such that each handle is free to rotate about a longitudinal axis of the extension member. The extension members are attached to the movement arm such that each extension member is free to at least partially rotate relative to the movement arm about vertical, longitudinal and transverse axes.

Abstract: An inclined leg press machine includes: a frame that includes a base configured to rest on an underlying surface and a pair of inclined guides; a seat assembly attached to the frame; a weight sled slidably engaged with the guides along a travel path that is substantially parallel with the guides, the weight sled operatively coupled with a resistance source; and a foot platform assembly movable with the weight sled, the foot platform assembly having a foot platform that receives the feet of an exerciser. The weight sled is movable along the travel path between flexed and extended positions. The foot platform rotates relative to the underlying surface as the weight sled moves between the flexed and extended positions so that, when the exerciser's feet are placed flat on the foot platform, the exerciser's feet and tibiae are maintained at an angle of approximately ninety degrees.

Abstract: An exercise machine for exercising muscles in the back of an exerciser, includes: a frame; a seat assembly attached to the frame; a movement arm pivotally attached to the frame and movable along a stroke path between an upper forward position and a lower rearward position; a resistance-imparting unit operatively connected with the movement arm to provide resistance to the movement arm as it moves from the forward position to the rearward position; a pair of handles to be grasped by the exerciser; and a pair of extension members, each of which is attached to a respective handle such that each handle is free to rotate about a longitudinal axis of the extension member. The extension members are attached to the movement arm such that each extension member is free to at least partially rotate relative to the movement arm about vertical, longitudinal and transverse axes.

Abstract: An inclined leg press machine includes: a frame that includes a base configured to rest on an underlying surface and a pair of inclined guides; a seat assembly attached to the frame; a weight sled slidably engaged with the guides along a travel path that is substantially parallel with the guides, the weight sled operatively coupled with a resistance source; and a foot platform assembly movable with the weight sled, the foot platform assembly having a foot platform that receives the feet of an exerciser. The weight sled is movable along the travel path between flexed and extended positions. The foot platform rotates relative to the underlying surface as the weight sled moves between the flexed and extended positions so that, when the exerciser's feet are placed flat on the foot platform, the exerciser's feet and tibiae are maintained at an angle of approximately ninety degrees.

Abstract: An exercise machine for exercising muscles in the back of an exerciser, includes: a frame; a seat assembly attached to the frame; a movement arm pivotally attached to the frame and movable along a stroke path between an upper forward position and a lower rearward position; a resistance-imparting unit operatively connected with the movement arm to provide resistance to the movement arm as it moves from the forward position to the rearward position; a pair of handles to be grasped by the exerciser; and a pair of extension members, each of which is attached to a respective handle such that each handle is free to rotate about a longitudinal axis of the extension member. The extension members are attached to the movement arm such that each extension member is free to at least partially rotate relative to the movement arm about vertical, longitudinal and transverse axes.

Abstract: An exercise machine for performing leg curl and leg extension movements includes: a frame configured to rest on an underlying surface; an upper leg-supporting assembly pivotally interconnected with the frame, the upper leg-supporting assembly having a seat pad; a torso-supporting assembly pivotally interconnected with the frame and with the upper leg-supporting assembly, the torso-supporting assembly having a backrest pad; a leg curl assembly arm pivotally interconnected with the frame about a first pivot axis; a leg extension assembly arm pivotally interconnected with the frame about a second pivot axis; a resistance-imparting unit coupled with the leg curl movement arm and the leg extension movement arm; and a conversion mechanism interconnected with the frame and/or the torso-supporting assembly and the upper leg-supporting assembly.

Abstract: An exercise machine for exercising muscles in the back of an exerciser, includes: a frame; a seat assembly attached to the frame; a movement arm pivotally attached to the frame and movable along a stroke path between an upper forward position and a lower rearward position; a resistance-imparting unit operatively connected with the movement arm to provide resistance to the movement arm as it moves from the forward position to the rearward position; a pair of handles to be grasped by the exerciser; and a pair of extension members, each of which is attached to a respective handle such that each handle is free to rotate about a longitudinal axis of the extension member. The extension members are attached to the movement arm such that each extension member is free to at least partially rotate relative to the movement arm about vertical, longitudinal and transverse axes.