[TRITON]

My opinion is that in a training cycle for some record attempt of some competition one should start with lots of aerobic activites and strength building in the gym...and as time passes slowly switch to apnea exercises(apnea biking,walking, empty lung statics,apnea exercises in the gym....).It seams very logical to me that you should first prepare your cardiovascular system and muscles for the loads and stress in apnea exercises and max attempts.And as Jome said it greatly depends of the "sport background" of a certain individual.