[mden]

That's my understanding as well. The title makes no sense and seems very click-baity.

"Our simple projections indicate that muscle contractile speeds that would allow for maximal or near-maximal forces would permit running speeds of 35 to 40 miles per hour and conceivably faster"

So essentially if human physiology worked differently than it did, we could theoretically run much faster. Not a useless result, but not really anything as exciting as they make it sound.