As I
mentioned before -- I was asked to contribute an article to
t-nation about "things I believe but can't prove"
I wrote that I felt
excessive aerobic training may actually retard fat loss -- but I had no evidence to prove it other than the experience with our gym members (which I suppose is considerable data really).
I do think there are enough studies out there that show no fat loss effect with the addition of aerobic training (even though it burns calories) to question whether it helps e.g. a 1998 study (
Int J Sport Nutr. 1998 Sep;8(3):213-22.) once compared the addition of 45 mins at 78% MHR of aerobic training, 5 days per week to an already dieting population and found that it had no additional fat loss effect over dieting alone. I've since collected about 5 or 6 studies with the same conclusion.
-- but as I said - I still couldn't
prove it.
I've hypothesized that a) aerobic training really doesn't burn that many calories, b) the body becomes efficient at it at a fairly fast rate- therefore burning even less calories per session and c) perhaps there is an overall lowering of metabolism that occurs long term -- but I don't really know. It's just an observation that it never seems to pan out in the real world.
Despite my pointing out that I
couldn't prove it (and that being the title of the article)-- I was lambasted and asked for proof in the t-nation forum.
Huh? (The clue is in the title of the article...)
Then, last week another study came out that showed that 40 mins of aerobic work, performed three times a week for 15 weeks had no effect on fat loss (in fact the aerobic group actually gained fat).
And people lambasted the study saying there was no way it could be accurate - blah blah blah - aerobics
had to generate some fat loss etc (funny how everyone on the internet can evaluate a study better then the University of New South Wales).
Interesting.
In summary -- I gave my opinion as to what
I think works based on several years experience, working with real clients, in person. People (some with far less experience than me, and some with more) disagreed. That's fine. It's just my opinion.
Then a study comes out that validates what I said. And people (most of whom have never published a study in their lives) disagreed with it. That's also fine. It's just a PhD thesis (!).
What does it take to change people's viewpoints, or at the very least have them not be so 'closed-minded'? More client data? Another 100 studies?
I don't know. But apparently my 17 years of experience, our 200 or so clients currently training with us, multiple studies, and a PhD thesis from UNSW aren't enough yet.
Something to point out though:
I have no vested interest in whether steady state aerobics works or not -- I don't make anything up - I just do what we have found over time to get the fastest results.
If I could get faster fat loss results using steady state aerobics then that's exactly what I'd do - because then I'd be more successful using that modality. I'm
only interested in results.
My experience supports that aerobic training doesn't help, our client records support that, and the science supports that.
What are we missing?
--
AC
PS - to see pretty much exactly what we do at Results Fitness -- check out our
fat loss program.