Training for the 1500/1650: Suggestions?

I could be wrong about this, but it seems to me female swimmers are much more likely to breathe bilaterally than males are. My theory is that females are more likely to listen to their coaches' advice and lots of coaches advocate breathing to both sides. That's funny ;-) Truth of the matter though is well. Two very simple things: 1. Females have a higher turnover. Even if they'd breathe every 3 then endup breathing more often than for instance when GBrain is breathing every 3 (given his turnover rate). 2. Females have a lowerbody that floats better, which means that with a proper technique they can really swim real energy efficient 2 beat kick. Bring me any coach that advocates restricting O2 intake during a threshold based event, I may have a word or two for him.... Principle is relatively simple. It's a matter of bottleneck. You don't want your performance to be limited by O2 Accumulated deficit for the good reason that at threshold level, the bottleneck should (hopefully) not be there. Things are different at Vo2Peak or even over this level. And by the way, same goes with those nicely fashioned push off with dolphin kicking (underwater). Very nice when you see world class athletes performing these, but they can be very harmful for performance over 1500. They can literally kill your event.

I could be wrong about this, but it seems to me female swimmers are much more likely to breathe bilaterally than males are. My theory is that females are more likely to listen to their coaches' advice and lots of coaches advocate breathing to both sides. That's funny ;-) Truth of the matter though is well. Two very simple things: 1. Females have a higher turnover. Even if they'd breathe every 3 then endup breathing more often than for instance when GBrain is breathing every 3 (given his turnover rate). 2. Females have a lowerbody that floats better, which means that with a proper technique they can really swim real energy efficient 2 beat kick. Bring me any coach that advocates restricting O2 intake during a threshold based event, I may have a word or two for him.... Principle is relatively simple. It's a matter of bottleneck. You don't want your performance to be limited by O2 Accumulated deficit for the good reason that at threshold level, the bottleneck should (hopefully) not be there. Things are different at Vo2Peak or even over this level. And by the way, same goes with those nicely fashioned push off with dolphin kicking (underwater). Very nice when you see world class athletes performing these, but they can be very harmful for performance over 1500. They can literally kill your event.