What I found to be of particular interest was the huge increase in stroke volume (amount of blood pumped per heart beat) in the high intensity groups compared to the moderate aerobic groups.
That is pretty interesting. Especially when you consider that cardiac output = heart rate x stroke volume, and our maximum heart rate declines with age.
That's the reason I don't worry about "base."
I suspect you already have a well developed aerobic base. And since you don't compete in distances greater than 100 yards, I'm not sure I see the benefit of doing a lot of aerobic work in the pool.
What I found to be of particular interest was the huge increase in stroke volume (amount of blood pumped per heart beat) in the high intensity groups compared to the moderate aerobic groups.
That is pretty interesting. Especially when you consider that cardiac output = heart rate x stroke volume, and our maximum heart rate declines with age.
That's the reason I don't worry about "base."
I suspect you already have a well developed aerobic base. And since you don't compete in distances greater than 100 yards, I'm not sure I see the benefit of doing a lot of aerobic work in the pool.
