In order to overload the strongest of muscle fibers with poor endurance requires short duration training sessions conducted at high levels of force production. (trainingscience.net)
As you can see from the chart, to produce high levels of force requires muscles to lengthen quickly, not lengthen slowly. (strengthandconditioningresearch.com)
On the other hand I consider core stability the ability to prevent and minimise unwanted movement at the torso, whilst high levels of force are being produced elsewhere - specifically the hip and shoulder. (rugbystrengthcoach.com)