Compressional Weakness and Muscle Function
Imagine the globe of the earth with its clearly defined latitudinal and longitudinal lines. If we were to begin to deflate the globe, the evenly spaced lines would lose their even spacing and begin to overlap each other. Further deflation would lead to twisting and tangling of these latitudes and longitudes.
One can imagine the body of a child with compressional weakness in a similar manner. In the healthy person, the internal volume within the bodily cavities works together with the strength of the fascial layers to secure the spacing and placement of the bony skeleton. When the internal volume weakens, then the fascial layers begin to slide. The relative placement of the elements of the bony skeleton distorts.
What then happens to the muscles?
Essentially all of our muscles are attached to two or more bones. A muscle works by contracting. Contractions of any given muscle will bring two bones closer to each other, thereby executing a movement.
When the placement of the skeleton and thereby the distances between the bones becomes distorted, then muscle functioning is affected. Musculo-skeletal imbalance occurs - meaning that some of the muscles become too short and overly strong i.e. spastic, and their reciprocal groups end up being too long and too weak.
Within the described distortion within the tissue layers, the central nervous system, regardless of what state it is in, is not able to function correctly. The overly shortened muscles are consistently over charged. Their overly lengthened partners receive no nervous stimulation.