Core stability ball exercise

Keywords— Core stability ball exercise. Ball size. Posture balance, COM-COP inclination angles. Muscle activation. 

Marshall PW, Murphy BA (2005) Core stability exercises on and off a Swiss ball. Arch Phys Med Rehabil. 86(2) 242-9. 

Surface EMG was used to observe the various activities of muscles in different stabilization exercises that were the major concern in previous studied. Marshall et al studied four kinds of different core stabilization exercises on ball, and used surface EMG to record muscle activations of RA, EO, TA, and ES[4]. While subjects performed tasks of the single-leg hold and at the top of the press-up on the ball, there was significant increase in muscle activation of RA, implying that the ball could provide an increased training stimulus for the RA compared with doing on stable surface. 

Although many studies investigate core stabilization exercises, few studies focus on quantitatively posture control. Also, it is relatively rare to investigate core stabilization exercises with different ball sizes. The purpose of this studywas to investigate the muscle activation intensitiesand posture stability while performing roll out exercise on three different ball sizes. 

When roll out exercise is performed on unstable support base, there is slightly higher muscle activation of abdominal and back extensor muscles. Our findings agree with the previous literature. Several studies have investigated core stability of muscle activation, but core stability during ball... 

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