Going by the diagram below.
Original Link: http://maximum-maximorum.com/2009/02/13/strength-qualities-of-the-100m-sprinter/
Does the eccentric component (lowering or negative phase) of the actual deadlift or squat have its place in developing a fast athlete?, considering where trying to develop the concentric strength of a muscle as stated below?, particularly for block clearance & acceleration.
Or should we be training both eccentric & concentric components?.