Marshall PW, Murphy BA. Core stability exercises on and off a Swiss ball.
To assess lumbopelvic muscle activity during different core stability exercises on and off a Swiss ball.
Prospective comparison study.
Eight healthy volunteers from a university population.
Subjects performed 4 exercises on and off a Swiss ball: inclined press-up, upper body roll-out, single-leg hold, and quadruped exercise.
Main outcome measures
Surface electromyography from selected lumbopelvic muscles, normalized to maximum voluntary isometric contraction, and median frequency analysis of electromyography power spectrum. Visual analog scale for perception of task difficulty.
There was a big increase within the activation of the rectus abdominus with performance of the single-leg hold and at the highest of the press-up on Swiss ball. This led to changes within the relation between the activation levels of the lumbopelvic muscles measured.Conclusions
Although there was evidence to suggest that Swiss ball provides a training stimulus for the rectus abdominus, the relevance of this alteration to core stability training requires further research because the main target of stabilization training is on minimizing rectus abdominus activity. Further support has also been provided about the standard of the quadruped exercise for core stability.THE SWISS BALL (or gym ball) is widely reported within the recreational training environment to be a training device for core stability exercises.1 However, there’s little scientific evidence to support its use.2, 3 it’s also not clear whether performing an exercise on a Swiss ball has greater benefit than performing an equivalent exercise on a stable surface.
The term core stability may be a generic description for the training of the abdominal and lumbopelvic region. To define core stability, the mixture of a worldwide and native stability system has been used. the worldwide stability system refers to the larger, superficial muscles round the abdominal and lumbar region, like the rectus abdominus, paraspinals, and external obliques.4, 5 These muscles are the prime movers for trunk or hip flexion, extension, and rotation. Local stability refers to the deep, intrinsic muscles of the wall , like the transverse abdominus and multifidus. These muscles are related to the segmental stability of the lumbar spine during gross whole body movements and where postural adjustments are required.The validity of both the concept of core stability and therefore the optimal training protocols for core stability requires investigation. for instance , an exercise like abdominal hollowing (eg, the drawing-in technique) attempts to stress local over global stability.9, 10 For long-term core stability exercise programs, this sort of exercise neglects the synergistic relation between the muscles of the worldwide and native stability systems. For any movement task that involves the trunk region, it might be wrong to believe that just one specific muscular structure is actively involved. it’s known that 1 muscle can’t be identified as being more important for lumbar stability than another.11 A more appropriate approach to core stability training is to seek out exercises that incorporate the synergistic relation between the worldwide and native stability systems, but still elicit a satisfactory training effect.
Our purpose during this study was to match the activation patterns of muscles related to the worldwide and native stability systems during different core stability tasks on and off a Swiss ball. The exercises didn’t involve prime movement tasks for the trunk region but permitted us to research the synergistic relation between muscles when the general stability of the lumbopelvic region is challenged by the load force of the body segments. The hypotheses of this study were (1) the exercises performed on Swiss ball would have greater levels of muscle activation compared with the stable surface, and (2) the synergisti