http://www.nbc.com/The_Biggest_Loser/contestants/jeff/
Watched the 9th episode last night. Jeff (the Doc) has lost an astounding
100 lbs in 9 weeks. This is a tad over 11lbs per week or 1.58 lbs per day.
This basically amounts to 5700 Cal. deficit per day. The first week or two I
can see the weightloss being mostly water, but this large amount of loss is
simply incredible.
http://www.nbc.com/The_Biggest_Loser/contestants/matt/
And this rate of loss is not an anomaly. Matt has lost 85 lbs in 8 weeks,
or 10.62 lbs per week. For the 9th episode he won immunity. He gained 12 lbs
that he claims is part of a strategy. Perhaps, to gain extra strength for
upcoming challenges, since he was the person with the best % loss as of last
week.
Any of the people that lose 4 or 5 lbs in a week walk around with long
faces, when in fact they are losing twice the recommended weightloss for an
average Joe.
It seems they are in reasonably good health. What is stopping their hair
from falling out? If it is true that a calorie deficit of any kind will
consume some muscle, how can a person (like Matt) look like he is improving
on a 5000+ Cal. deficit? You would figure that the more severe the diet, the
more severe the muscle loss despite exercise. Since weight training is
suppose to actually break down muscle tissue while doing the work, wouldn't
the muscle loss be even greater, given the severe calorie deficit?
This is just an observation, and I don't know what type of
supplements/chemical help they are using. Whenever I see a clip of Matt
eating, he's usually chowing on a steak. Perhaps losing a lot of muscle mass
during severe weightloss is not as bad as claimed, if there is adequate
dietary protein and exercise. (Not that I think losing 10+ lbs per week is
good for you.)
I have heard and read claims that when not exercising while losing weight,
a crash diet would cause half of the loss by muscle mass alone. I don't
believe everything I read, but I do believe that the body will decide to
keep muscle if it seems that it is needed during day to day activities. If
the body figures the muscles are not being used all that much, it can be
sacrificed to make up part of the calorie loss. In the case of not
exercising, I can see that even a small caloric deficit would cause muscle
to be lost. I don't think a calorie deficit of, say, 500 Cal per day would
cause much or any muscle to be lost as long as adequate dietary protein and
sufficient exercise are maintained.
(Here's a snippet from an article claiming that 1/2 of weightloss in crash
diets is muscle.)
" The #1 reason why dieting alone will not lead to a HEALTHY weight for
life is that when we diet without exercising (specifically, resistance
exercise) UP TO 50% OF THE WEIGHT WE LOSE WILL BE MUSCLE MASS. Now, this
will vary from person to person based on genetics, age, sex, hormone levels,
etc. but an average is that 1/2 of the weight we lose on that crash diet is
from muscle loss."
http://ezinearticles.com/?New-Year-Resolution---Part-3&id=86249
--
Tom + Pat Gallant
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