Abstract: Implementations of an arm sleeve that provides external assistance to an arm and shoulder of a user during an arm motion are provided. In one implementation, the arm sleeve comprises a framework that includes a torso portion configured to be attached to the torso of the user and an arm portion configured to receive at least a portion of the arm of the user. The framework of the arm sleeve is a unitary construction of interconnected elastic members. The interconnected elastic members include a first elastic member configured to play an active part throughout an overhead throwing motion, a second elastic member configured to decrease the concentric contraction force necessary for shoulder abduction during the cocking phase of a throwing motion, and a third elastic member configured to assist eccentrically contracting muscles during the deceleration phase of a throwing motion. In another implementation, the framework of the arm sleeve is encased by an elastomeric cover.

Abstract: Implementations of an arm sleeve that provides external assistance to an arm and shoulder of a user during an arm motion are provided. In one implementation, the arm sleeve comprises a framework that includes a torso portion configured to be attached to the torso of the user and an arm portion configured to receive at least a portion of the arm of the user. The framework of the arm sleeve is a unitary construction of interconnected elastic members that define openings therebetween. The interconnected elastic members include a first elastic member configured to play an active part throughout an overhead throwing motion, a second elastic member configured to decrease the concentric contraction force necessary for shoulder abduction during the cocking phase of a throwing motion, and a third elastic member configured to assist eccentrically contracting muscles during the deceleration phase of a throwing motion. In another implementation, the framework of the arm sleeve is encased by an elastomeric cover.

Abstract: Implementations of an arm sleeve that provides external assistance to the arm and shoulder during an arm motion are provided. In one implementation, the arm sleeve comprises a framework that includes a torso portion configured to be attached to the torso of a user and an arm portion configured to receive at least a portion of an arm of the user. The framework of the arm sleeve is a unitary construction of interconnected elastic members that define openings therebetween. The interconnected elastic members include a first elastic member configured to play an active part throughout an overhead throwing motion, a second elastic member configured to decrease the concentric contraction force necessary for shoulder abduction during the cocking phase of a throwing motion, and a third elastic member configured to assist eccentrically contracting muscles during the deceleration phase of a throwing motion. In another implementation, the framework of the arm sleeve is encased by an elastomeric cover.

Abstract: Systems and methods for providing external assistance during a throwing motion include a detachable sleeve comprising a torso and an elastomer mesh arm region. The arm region comprises a long sleeve that covers the user's throwing arm to the middle of the forearm. The arm region may include an opening in the elbow portion hereof large enough for the elbow of a user to extend through. In this way, the elastomer mesh of the arm region will not interfere with the rotation of the elbow during a throwing motion. During a throwing motion, the elastomer mesh of the arm region helps prevent an overextension of the UCL and assists the varying muscles in the arm and shoulder that provide stability to the UCL during the forward motion of the arm leading to the release of the ball (or other object thrown).

Abstract: Systems and methods for providing external assistance during a throwing motion include a detachable sleeve comprising a torso and an arm. A first elastic portion has a first end affixed to a front side of the torso and a second end affixed to a top surface of the arm. A second elastic portion has a first end affixed to a back side of the torso and a second end affixed to the top surface of the arm. A third elastic portion is provided with a first end, a second area, a third area, and a second end, wherein the first end is affixed to the torso, the second area is disposed on the top surface of the arm, the third area is disposed on a bottom surface of the arm, and the second end encircles the user's throwing hand.