Deloading the Movement / Isolating One Phase of the Pull - up — you can
target the eccentric phase, concentric phase or mid-point (chin over the bar) with
movements such as negatives and
isometric holds.
Pause reps are one way to directly
target isometric contraction, which will have transfer over to
movements on field which require a quick reversal or change of direction i.e. almost everything we do, but especially stepping and sprinting.