The Rotational Athlete and the Importance of the Glutes by Hayden Giuliani
[Hayden Giuliani recently finished her Master's degree at the University of North Carolina Chapel Hill, where she now works as a research coordinator. She is currently in the Coaching Mentorship Program at Athletic Lab.] A rotational athlete is any athlete who uses twisting within the torso in order to perform their sport-specific movement. This is done in order to transfer forces generated from the lower body through the core to accelerate the upper body and dominant limb. Sports that incorporate this type of movement include, but are not limited to, baseball (swinging and throwing), tennis, and a few field events in track & field. The ball (or object) can be either stationary or be moving, but the intent is the same - accelerate it outwardly, as hard and/or fast as possible. These movements are very dependent on the adequate use of the body's kinetic chain. In this case, we are speaking of a closed kinetic chain, due to the foot (feet) being planted on the ground. Ground reaction forces generated from foot contact and the strength of the lower body are transferred through the pelvis and torso to move the upper extremity, whether that is one or both arms. Because humans are naturally stronger in their lower body, it is very important to be able to properly utilize the body's intrinsic kinetic chain. This is will increase the amount of strength and power that they can generate, but also minimize the stresses at the shoulder and upper extremity joints that contribute to injuries. First, let's discuss the kinetic chain a little bit further... Simply speaking, a kinetic chain refers to the body's segments that are linked to allow for the sequential transfer of forces and [...]




