Not only can one-sided preference for abdominal muscles (lack of exercise focused on other core muscles) result in creating muscle imbalances, but the effectiveness of exercise is also far from what could be achieved with a balanced workout planning. Core training frequently utilizes balance exercises. These are characterized by unstable position that requires involvement of a wide range of muscles which help balance oscillation of the centre of gravity. We can balance both in static positions and while performing dynamic movements.
The goal of core training is definitely not to develop muscle hypertrophy but to improve functional predispositions of physical activity. This particularly involves improving intra- and intermuscular coordination or synchronization of participating muscles.
Involvement of the core means more than just compressing abdominal muscles when in crouching or seated position. The role of the core muscles is to stabilize the spine. Resisting expansion or rotation is as important as the ability to execute movement.