Next, we know that exercising in an unstable environment also increases muscle fiber activation. (fitstep.com)
This takes full advantage of the increased muscle fiber activation that happens when you start an exercise from a stretched position like this. (fitstep.com)
There are 2 important points to understand about muscle fiber activation — 1) it is a team sport and 2) total force is the sum of the force of all the active fibers. (trainingscience.net)