Second of which is, holding the eccentric movement (for 1 to few seconds) and hold the totally stretched position for an extra three seconds. (mensquats.com)
But did you know that focusing work on the greatest stretched position of a muscle can give you a similar advantage in muscle building? (hardgainermusclebuilding.com)
Keep your hips straight and abs and glutes squeezed in the fully stretched position. (fitnessandpower.com)