Scapulothoracic Muscle Activation on Stable and Unstable Support Surfaces

in International Journal of Athletic Therapy and Training
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Activation of the upper trapezius, lower trapezius, serratus anterior, and triceps brachii muscles was measured, while center of pressure excursion beneath the hands was simultaneously monitored, during the performance of a push-up exercise on both a stable and an unstable base of support. The activation levels of all muscles were significantly greater for the unstable support surface when compared to those for a stable support surface (p < 0.05). A negative correlation was found between activation of the serriatus anterior muscle and center of pressure excursion (r = -0.64, p < 0.05). Performance of the push-up exercise on an unstable support surface appears to elicit greater muscle activation than a standard push-up exercise performed on a stable support surface.

Se-yeon Park is with the Department of Physical Therapy, Inje University, Korea.

Won-gyu Yoo is with the Department of Physical Therapy, Inje University, Korea.

Hun Kwon, Dong-hyun Kim, Si-eun Lee, and Mi-jin Park are undergraduate students with the Department of Physical Therapy, Inje University, Korea.