Abstract: A method for resistance training to arm and leg movement can include connecting a horizontally oriented raised weight base secured to a moveable sled in a spaced apart relationship, mounting a agility box, threading a first flexible and extendable one piece stretch cord through a plurality of aligned first upper rollers, securing a static non-extending stretch cord between the moveable sled and a subject, pulling on the first flexible and extendable one piece stretch cord connected to the moveable sled by the subject to receive a first load of resistance causing a physiological change to a targeted part of the subject and simultaneously receiving a second load of resistance to a targeted part of the subject while pulling the moveable sled with the static non-extendable stretch cord.

Abstract: A method for resistance training to arm and leg movement can include connecting a horizontally oriented raised weight base secured to a moveable sled in a spaced apart relationship, mounting a agility box, threading a first flexible and extendable one piece stretch cord through a plurality of aligned first upper rollers, securing a static non-extending stretch cord between the moveable sled and a subject, pulling on the first flexible and extendable one piece stretch cord connected to the moveable sled by the subject to receive a first load of resistance causing a physiological change to a targeted part of the subject and simultaneously receiving a second load of resistance to a targeted part of the subject while pulling the moveable sled with the static non-extendable stretch cord.

Abstract: The present invention comprises a novel sled training device generally consisting of a sled with vertically oriented pole for attaching, a detachable cuboidal structure that attaches to the sled and holds pulley systems with stretch cords running through them and then to the ankles and wrists of the user. A rope or stretch cord attaches to the front of the sled and runs to an attachment point on a harness worn by the user when the apparatus is configured to be pulled by the user. The apparatus may be configured to be pushed by the user by means of an attachment that connects to the vertically oriented pole for attaching weights, and which has padded structures to be pushed by the subject's shoulders and/or forehead. The detachable cuboidal structure may be removed from the sled and attached to any stationary structure for use without the sled.