the point is more the lactic acid buildup and fatigue etc than the speed i think... even doing the 16 second lengths is really hard to make by the time you're up to 30 lengths or whatever it is.

but there is definitely something wrong with the test when you can push 100% and throw out the same score whether when in the off-season and right before a comp... comes down to your mental state on the day and how happy you are to take the pain in some ways.