Patent attributes
An exercise device provides elastic members which extend from an anchor to a movable carriage, such that a user can move the carriage in opposition to the resistance of the elastic members to perform exercise. The elastic members are preferably removably attached to both the anchor and the carriage so that they can be removed and replaced with elastic members having different resistances. Attachment at the carriage is preferably achieved via weight modules situated between the members and the carriage, with the elastic members being removably attached to the weight modules, and the weight modules having latches which affix to the carriage. The carriage may be actuated by a user via a pulley system which decreases the amount of carriage travel, thereby reducing the stretch in the elastic members so that they provide less variation in the effective force/weight experienced by the user.
