Το επαναφέρω γιατί έπεσα σε κάτι που μου κέντρισε το ενδιαφέρον... έχει σχέση με το καθαρά πρακτικό κομμάτι της προσπάθειας διατήρησης της απώλειας
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Metabolisms: It takes 50 calories per kg of LBM to maintain the weight of both obese and normal people (people who have never been obese). It?s important to note that the metabolisms of the obese are identical to normal people. The ?I?m fat because of my metabolism? argument was shot down in his lab because he discovered that obese and normal people burn calories at exactly the same rate. Obese people are simply taking in ? or burning fewer - calories than normal people and storing the excess as body fat.
Back to the equation Stored Body Fat = Food Intake ? Energy Expenditure - the energy expenditure (I?m going to abbreviate it as EE) part is made up of three parts: resting energy expenditure, non-resting EE, and thermic (the digestion of food). Resting EE accounts for about 50 ? 60% of the calories we burn in a day, thermic accounts for about 5%, and non-resting EE makes up the remainder. If we take in more energy (calories) than we expend, it?s stored in our bodies as protein, glycogen, and fat.
Our Bodies ARE Different!: This is the part that?s relevant to all of us maintainers. Like we?ve long suspected, our metabolisms ARE slower after we lose weight. Scientific research shows that we have to eat less and/or move more to sustain our weight losses.
Here?s the deal - it takes 50 calories per kg of LBM to maintain the body weight of either a normal or an obese person. BUT ? it takes only 42 calories per kg of LBM to maintain the weight of a reduced obese person (doctors and researchers call those of us who were obese and are now a normal weight the reduced obese).
We ARE different! Dr. Leibel said that we reduced obese may LOOK normal on the outside but our bodies are very different on the inside. He said that, in order to maintain our weight, we reduced obese need to eat 15 - 20% fewer calories per day than a comparable person ? same height, weight and gender etc ? who never was obese.
Why? The difference in calorie needs comes ALL from changes in NON-resting energy expenditure. The resting rate is unchanged. But our muscle efficiency increases by 15% after weight loss, so we become more efficient in using energy in exercise and everyday activities. And so we burn fewer calories per pound than either a normal weight or an obese person. It?s completely measurable in a lab ? all you have to do is put the reduced obese person on a stationary bike and measure energy expenditure. We aren?t going to burn as many calories as normal people do. In practical terms, it means that when you?re at the gym on a treadmill, the person next to you is going to be burning 15-20% more calories than you do even is she is exactly the same height, weight and age (so long as she never was fat). Wonderful, eh?
