The catecholamines—primarily epinephrine, but also norepinephrine and dopamine—are secreted by the adrenal medulla and are important for the acute expression of strength and power because the hormones act as central motor stimulators and peripheral vascular dilators to enhance enzyme systems and calcium release in muscle.
In this lecture from the NSCA's 2014 Coaches Conference, Mike Robertson talks about corrective exercise and its application. Invoking Gray Cook, Mike defines corrective exercise as "a holistic approach where an assessment is used to determine specific weaknesses and/or limitations of the athlete" - be it aerobic, strength, or agility.