Answer the fоllоwing questiоn bаsed on this scenаrio: A pаtient is instructed to perform a wall slide: keeping the head, shoulders, and back against the wall, feet shoulder width apart, slowly slide down the wall until the thighs are parallel with the floor. Hold for a count of five and then return to the starting position. During the final phase as the patient returns to the starting position, what type of contraction is occurring in the agonist?