The throwing motion is initiated by first taking a stride toward the target with the leg opposite of the throwing arm. The first stage of the throwing motion includes the time from the start of the motion to when the shoulder has reached its maximum external rotation. Proper technique for the start of the overhead throwing motion involves the thrower's body facing approximately 90 degrees from the intended target, with the throwing arm on the opposite side.
There are variations in the throwing motion unique to the thrower, but generally the throwing motion is performed as follows.
#UNDERHAND THROW MOVEMENTS PROFESSIONAL#
This throwing motion is described based on the analysis of professional athletes, mainly baseball pitchers, as they are recognized as having mastered this skill. The thrower uses muscle segments throughout the whole body to transfer potential energy from the lower extremities to the upper extremities where it is then transformed into kinetic energy as the projectile is released. In the overhead throwing motion the body is a kinetic chain, and the efficiency of the kinetic chain determines the quality of the throw (velocity and accuracy of the projectile). Determining the desired qualities of the throwing motion is difficult to assess due to the extremely short amount of time that it takes professionals to perform the motion. However it is mainly the throwing motion mechanics and the thrower's ability to coordinate them that determines the quality of the throw. These qualities are affected by the physical attributes of the thrower like height, strength, and flexibility. The throwing motion can be broken down into three basic steps: cocking, accelerating, and releasing.ĭesired qualities in the action produce a fast, accurate throw. It is used almost exclusively in athletic events.
#UNDERHAND THROW MOVEMENTS SERIES#
The overhand throw is a complex motor skill that involves the entire body in a series of linked movements starting from the legs, progressing up through the pelvis and trunk, and culminating in a ballistic motion in the arm that propels a projectile forward. The overhand (or overhead) throw is a single-handed throw of a projectile where the object is thrown above the shoulder. Ball speeds of 105 miles per hour (169 km/h) have been recorded in baseball.
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