April 8th, 2005

(no subject)

as a follow up to my post yesterday here

i went looking for the ecto/endo/meso-morph body types and descriptions (i'm sure any of us who have been in psychology classes remember these)
and i found this website with a fairly accurate quiz.
the closer you are to 1, the more endomorphic you are.
the closer you are to 2, the more mesomorphic you are.
the closer you are to 3, the more ectomorphic you are.
just for you in-betweenies.
its meant for body/building and fitness but it does have some good information on what may work best for you to reach your goals.

here are a few excerpts

In the 1940s, Dr. William H. Sheldon introduced the theory of Somatypes. His theory described three basic human body types: the endomorph, characterized by a preponderance of bodyfat; the mesomorph, marked by a well-developed musculature; and the ectomorph, distinguished by a lack of either much fat or muscle tissue. He did also state that most people were a mixture of these types.

And many women who tend to be endomorphic will save themselves much suffering by not striving to change themselves into ectomorphs, it's not going to happen. Conversly a true ectomorph who wishes to be a Sumo wrestler would also be in for a big disappointment.


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and here is another site that gives info on how to eat to lose weight according to your somatype
http://bodybuildingpro.com/bodytype.html

excerpt that totally applies to me as i'm typing and avoiding the gym ;]

Because a mesomorph can generally build muscle and shed away fat with considerable ease, he often becomes lazy and apathetic to eating binges and lulls in exercise, maintaining faith that his favorable genetics will bail him out of such consequences.

and another excerpt.

One such mistake many body shapers make is to assume that all rules of dieting, exercise, and weight training applies to each and every individual. However, this is not kindergarten. The rules at hand will always vary, depending on your genetic makeup.


okay, must move lazy ass towards the gym now.

Intro

Part 1

--Age: 40

--Gender: F

--How I found my way here: ‘body image’ interests search

--Questions/comments/concerns: I’m interested in nutritional discussions primarily, psychology of EDs secondarily.

Part 2 (disordered members only)

--ED: EDNOS. Anorexic from age 15-32 (lowest weight 89). Bulimic from age 18-32. Gradual recovery for the next 8 years. current BMI: 18.2. Still obsessive with exercise.

--Diagnosed/Self-diagnosed?: Diagnosed by professionals.

Application

Part 1

--Age: 19

--Gender: Female

--How I found my way here: Mentioned in another group, ed medfacts.

--Questions/comments/concerns: I'm looking forward to learning, and gaining knowledge.

Part 2 (disordered members only)

--ED: Anorexia Nervosa

[1a] Is your bmi less than 17.5? Yes it's currently at 16.9

[2] Are you terrified of gaining weight or getting fat? Unquestionably

[3] Does your weight/size/shape influence how you feel about yourself? Yes

[4] Have you lost your period for at least three months? Yes when I was at my LW.

[5a] Restricting types only: While you have been anorexic, have you restricted without episodes of binging? Yes

Thanks for yr time.
  • Current Mood
    tired

Thyroid, Resting Energy Expenditure, and Anorexia

European Journal of Endocrinology (2005) 152 179–184

L-Tri-iodothyronine is a major determinant of resting energy expenditure in underweight patients with anorexia nervosa and during weight gain
Simone Onur1, Verena Haas1, Anja Bosy-Westphal1, Maren Hauer1, Thomas Paul2, Detlev Nutzinger2, Harald Klein3 and Manfred J Müller1

There's a lot of confusion about the effects of dietary restriction on metabolic rates and whether there is such a thing as "starvation mode." This article clarified a lot of the issues for me--and is pretty fascinating from a physiological perspective. It's a little technical (and may be difficult to understand without the figures, which I couldn't figure out how to post), so here's a summary of the salient points.

The study examined the relationship between resting energy expenditure(REE), lean body mass, and "T3"--the active form of the thyroid hormone that is implicated in metabolic rates. (As you may know, under and over production of thyroid hormones result in metabolic slowdown or increases, respectively). The researchers found that compared with healthy controls, patients with anorexia have significantly lower resting energy expenditure (by about 20%) that correlates both with lower T3 levels and reductions in lean body mass. Notably, both of these factors are independently predictive of REE--implying that a person's metabolism slows not just b/c of muscle wasting, but also b/c of hormonal changes.

Interestingly, when the AN subjects began refeeding regimes, both their T3 levels and REE rates significantly rebounded, suggesting the T3 response may have a stabilizing effect in terms of weight gains or losses. T3 levels correlated strongly with changes in metabolic rates during refeeding. The authors also found that the relative contribution of increased lean mass to REE increases during refeeding is small because most of the weight regained, at least initially, is in the form of body fat.

Given that AN have normal levels of TSH (that stimulates the production of thyroid hormone) and T4 (the inactive/precursor form of the T3), the authors hypothesize that factors released by the fat tissue itself triggers the increase T3 production (i.e. the conversion of T4 to T3). The suggest increases in leptin release, a factor secreted by adipose tissue that is low in patients with AN, may result facillitate the coversion of thyroid hormone into its active form.

A couple of things to think about:

*The increase in REE with increased fat mass can paradoxically make it difficult for patients with AN to gain weight during refeeding, hence the atypically high calorie regimes used in treatment.

*This T3 response is evident in normal or overweight adults when they gain weight, but not to the same degree as in patients with AN.

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