Ok, I've just misunderstoot the question, I'll will add the numbers behind every type of training. I just cross the 80%+ seeing the high numbers down below.
Well I just do much stamina training, and only a little breathhold.
1x a small o2 schedule -up to 90%-
1x a full light Co2 -up to 95%, but like I think it's ment, I try to do it without contractions-
I have to cycle a lot to get to the pool, or to anywhere, and I find it difficult to cycle slow, thus I usually end up racing 10KM or more to the training, at a HR of 160
(25-45 min race) - I say about 80% intensity-, when I go out to cycle the sport instead of getting somewhere it's 80-85% for 1-3 hours.
At the pool I train for about hour perfecting technique, at different intensity levels, with snorkle or in apnea. Useually 3 pool sessions in a week. 70% - 90%
Another thing is stretching, I try to do every day.
And to complete the circle I practice my meditation skills by sungazing at sinrise and sunset.
In my view hard static training does not work. I think to see proof of that every time I join a competition. As many do not even get close to their PB, and hearing the stories about samba's and BO's and of times going down lately.
I my view a PB comes when you have learned something.
Or improved your stamina. So I focus on learning while doing statics. I do a max once or twice a month when I feel like it, to make my progress visable to myself. As a sort of reward.
Rik has written a small Column about what he likes to call "Static Burnout Syndrome(SBS)". You can find it here:
http://www.apnea.nl/UK-Columnwk4.htm
Kars.