optimal split differential between 50s in 100

what is the optimal differential between the first and second 50 on a 100 yard short course freestyle? The first 50 benefits from the dive and the relative freshness of the swimmer; the second 50 requires two turns and contending with lactate and fatigue. Is it better to go all out and try to hold on, or save a little for the end? Say you can swim an all-out 50 by itself at 25 seconds. How would you ideally swim the 100? Example: 25.5 then 28.5 for 3 second differential and a 54.0 or 26.0 and 28 for a 2 second differential and a 54. Which method do you think is best?
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  • In September, in one of our little local meets, I swam the 100 SCY in 54.53. Alas the splits aren't posted, but I am almost certain I went out fast and died, with the differential being well over two seconds (maybe even 3). A week ago, I tried it again with an intention of going out slower, taking the third length smooth, then sprinting all out. This was a much less agonizing proposition, I must say, and my time did go down slightly. Splits this time: 54.21 26.17 28.04 (differential 1.87) For what it's worth, just telling myself to relax slightly kept my arms from prematurely tightening up. A friend also told me an interesting strategy for the 500, which I tried at the same meet. 1st 50--just a tiny bit faster than comfort zone (ftcz) next 100--a little slower than comfort zone (stcz) next 50--ftcz next 150--stcz next 50--ftcz next 50--stcz final 50--sprint! Maybe it was just the mental distraction of trying to remember all this, but it also worked in helping lower my time from a 5:42 at the September meet to a 5:37 at this one. Now, perhaps I should simply concentrate in getting into shape...
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  • In September, in one of our little local meets, I swam the 100 SCY in 54.53. Alas the splits aren't posted, but I am almost certain I went out fast and died, with the differential being well over two seconds (maybe even 3). A week ago, I tried it again with an intention of going out slower, taking the third length smooth, then sprinting all out. This was a much less agonizing proposition, I must say, and my time did go down slightly. Splits this time: 54.21 26.17 28.04 (differential 1.87) For what it's worth, just telling myself to relax slightly kept my arms from prematurely tightening up. A friend also told me an interesting strategy for the 500, which I tried at the same meet. 1st 50--just a tiny bit faster than comfort zone (ftcz) next 100--a little slower than comfort zone (stcz) next 50--ftcz next 150--stcz next 50--ftcz next 50--stcz final 50--sprint! Maybe it was just the mental distraction of trying to remember all this, but it also worked in helping lower my time from a 5:42 at the September meet to a 5:37 at this one. Now, perhaps I should simply concentrate in getting into shape...
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