07/16/2026
Why does posture matter for pitchers?
The player’s postural position at front foot strike is essential for arm health and throwing velocity.
By holding a stacked position (one in which the players ribcage sits over their pelvis) the player is able to maintain adequate length tension relationships in the abdominal musculature. This allows for maximal force transfer and optimal separation from the lower half to the upper half
Further this position improves the scapula’s ability to get into a posteriorly tilted and upwardly rotated position which is essential for arm.
One of the most common compensations seen at front foot strike is one in which the player’s lumbar spine is hyperextended with the elbow bent inside of 90 degrees.
There are never absolutes, however this pattern often arises as the player looks to find stability in the mid section and is often able to find it passively by locking out and hyper extending the lumbar spine. This position will make it very difficult for the player to create any separation from the upper and lower half. Further players will often bend their elbow well inside of 90 degrees in effort to rotate quicker. While this offers a quick solution to rotate quick it can also drive up stress placed on the throwing arm.
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