Yes, I’ve heard him state the same thing;however, as I stated in my last post- I disagree; and again, I work with large numbers of players, and have through the years back to the high school level, and in all these numbers I’ve seen very few who naturally made a flat foot/heel first contact during power speed.
I would argue that footwear has created this thinking due to it’s overly supportive nature (something that I think causes more back and lower limb problems than most anything)
I have my athletes perform a great deal of warm up and power speed in their socks only.
give it a try and you’ll notice how making contact with your heels is not a natural event.
I should also note that power speed is more about vertical action, versus forward speed, so the more dynamic the vertical component becomes- RE Newton- the more dynamic the ground contact dynamics become.
At any rate, I firmly believe in the way I have my players perform power-speed for the reasons I’ve mentioned and I think if any sprinter/athlete clears their mind and just ‘does’ it they’ll find themselves on their forefoot as well.