[quote]tedro wrote:
Believe me, I have kept my cool. When somebody with no knowledge of sprinting feels qualified to discuss the topic, they are an idiot. [/quote]
Still doesn’t justify name calling.
[quote] Earlier I commented on the 40 and verticals and you said there is not a very strong correlation. I respectfully disagree. I recall reading a study which showed that the VJ had an extremely strong correlation with 40 yard dash times.
Source? A ‘strong’ correlation is relative. My point is that the correlation between 40y times and 100m times is much closer than 40y times and vertical. [/quote]
Here is the study. It shows a .76 correlation between the VJ and a college football player’s 40 time. http://www.iowaahperd.org/journal/predicting_40yard.html
Do you have a source for your contention that there is a closer correlation between 100 meter times and the 40 yard dash, or are you just going off the fact that both the 100 and 40 are sprinting events. If so, then you must also accept the fact that both the 200 and 40 are sprinting events and yet even you wouldn’t be surprised to see 40 times at the combine which are better than those of elite 200 meter sprinters.
Also, you keep bringing up the conditions, but no one is saying that guys are routinely beating BJ’s time. He ran it in just over 4.2 right? Like 4.27? The faster combine times are around 4.3. Factor in the timing issues we all concede an you’re looking more at 4.4. So these guys are running about .13 seconds slower than BJ, but without blocks, no spikes, no tailwind and on turf. Okay, but those things–blocks, spikes, turf–all diminish in importance the shorter the event (this is science).
You could probably run 10 yards on turf in cleats nearly as fast as 10 yards in spikes on a track. The difference would be extremely small. That is what is going on with the forty, in my estimation. It is not long enough for the different conditions to have a very significant impact and is perhaps worth the .13 difference in the times.
And for the last time, elite sprinters in the 100 meters must have a mix of excellent explosiveness/acceleration, top speed, and speed endurance. They train accordingly. A football player needs only the first attribute–explosiveness/acceleration–and trains accordingly.
Therefore, the question comes down to this: Do you believe that each year our country of 1/3 of a billion people can produce 10-20 weightroom warriors who can match or come close to Ben Johnson’s acceleration and explosiveness (note I did NOT say top speed) over a very short sprint of 40 yards? Obviously you do not, but I don’t think it is so clearly impossible like you do.