The core is consist of 29 pair of muscles (ie. rectus abdomilas, tansversus abdominis, quadratus lumborum, multifidi) that help to stabilize the spine, pelvis, and kinetic chain during movements. Without theses muscles, the spine would become mechanically unstable. When the system works as it should the result is proper force distribution and maximal force generation with minimal force at the joints. The core is particularly important in sports because it provides stability and mobility.
It has been suggested and studied that core stability and strengthening exercises are important in maintaining the core, especially in the case of spinal instability. The 'gross' spinal instability result displacement of vertebrae, which is often associated with neurological deficit and deformity. However, functional or 'clinical' instability is not as easily defined. Panjabi described clinical instability as, "instability in which the loss of the spine's ability to maintain its patterns of displacement under physiologic loads so there is no initial or additional neurologic deficit, no major deformity, and no incapacitating pain." Furthermore, the stability of the spine is not only dependent on muscular strength, but also proper sensory input. Thus a complete core stabilizing program would consider sensory and motor component s relates to these systems for optimal spinal stabilization.
I wanted to look at core stability and strengthening exercises could not only help the clinical instability but also has any preventative effect.
during five common stabilization exercises performed in supine, bridging and four-point kneeling positions with and without instructions to hollow and as they continuously pull the lower part of the abdomen towards the spine. The authors are experts in the school of sport and health sciences as well as neuroscience, all from Stockholm Karolinska Institutet. The study method was undertaken on nine habitually active women wherein muscle activity was recorded bilaterally from TrA and RA with intramuscular fine-wire electrodes introduced under the guidance of ultrasound. The study is unique for finding out that the participants were able to selectively increase the activation of the TrA, separated from the RA, when instructed to specifically hollow. It found out that side differences in the amplitude of TrA activity, related to the asymmetry of the exercises remained the same even after the instruction to hollow. The exercises performed increase the levels of TrA activation from 4 to 43% during maximal effort and it was suggested to be useful in clinically grading the load of the TrA when designing programs aimed at training that muscle. Stabilization exercises increase the level of TrA activation and could aid training designers in muscle improvement. Level 1. Borghuis, A.J., K. Lemmink, and A.T. Hof. 2011. Core Muscle Response Times and Postural Reactions in Soccer Players and Nonplayers. Medicine Science in Sports & Exercise 43(1), 108-114. The purpose of the authors is to investigate whether soccer players will exhibit shorter average core muscle reflex latencies along with less postural sway in response to a sudden trunk perturbation compared with non-players. Another purpose was to find out whether postural control measures are a valid and more practical alternative