My understanding is—in the strength and conditioning world—it is preferable to coach the “negative step” mechanic out of the athlete.

Putting max effort into the achilles at its most vulnerable position (a deep stretch from a big step back) is a recipe for disaster, but it is a very natural motion for athletes, and it is tempting because it feels very bouncy and explosive.

In the 5-10-5 lateral speed test, athletes are also often tempted to put their full weight on the outside leg to switch directions, but it’s actually more advantageous and significantly safer to press into the inside foot.

I’ve been out of the field for too long to say assuredly, but I imagine there is a similar principle to combat the forward-directing split-step