Dietary Restraint and Cortisol Levels – Research Review

I’ve also pointed out that, in addition to certain dieting and training practices, there is a certain personality type that seems more prone to this. When I am being polite about it, I call them tightly wound. When less so, I say they are neurotic as hell. More accurately, they are neurotic about things like their body weight and eating habits. You can always tell these people by the online threads they start. It’s always “WHY AM I NOT LOSING WEIGHT?!?!?”. You can hear the stress in their typing.

Impact of the Menstrual Cycle on Determinants of Energy Intake – Research Review

That’s what today’s research review is about, a look at how things such as energy intake, appetite, energy expenditure and body weight change throughout a woman’s cycle, as well the impact of birth control is briefly examined along with some issues related to PMS and food cravings.

Reduced Fat and Reduced Carbohydrate Diets and Fat Loss – Research Review

The second is that, again within the limitations of this study, there doesn’t seem to be an advantage in terms of FAT LOSS (which is what actually matters) to a reduced carbohydrate diet. Yes, weight loss is always greater but water loss can range from 1-15 lbs. It happens in the first few days, ultimately means nothing since water contains no energy, and pinning a metabolic advantage on water loss is pretty silly.

The Dieters Paradox – Research Review

In introducing today’s paper, I am reminded of an old joke/quip to the effect that “All that separates man from the animals is our ability to rationalize.” I’d add “And accessorize” but that’s neither here nor there. But the reality is that humans are able to do a wide variety of mental gymnastics in how they approach life. Effectively, we appear to be slave to what psychologists call cognitive biases, ways in which we think about the present, past, future or ourselves that often lead us to make some fascinatingly bad choices. This is a topic that many recent books has discussed.

Mind Over Milkshakes: Mindsets, Not Just Nutrients, Determine Ghrelin Response – Research Review

Ok, in addition to having possibly the coolest title of any paper I’ve reviewed on the site, this is also one of the weirdest papers I’ve looked at. But I’ve seen it getting a lot of press and, of course, have to put in my own two cents, if for no other reason than I suspect many people will take the findings far out of contexts. First, some necessary background; this will probably take more space than discussing the actual paper itself.

A 45-Minute Vigorous Exercise Bout Increases Metabolic Rate for 14 Hours – Research Review

In recent years there has been a focus on the calorie burn that occurs after training, referred to in science terms as EPOC (Excess Post-exercise Oxygen Consumption). A variety of different types of training (usually revolving around brief duration, high-intensity methods such as interval training or circuits) have been proposed with the major effect of such activity being in the EPOC that is created. Basically, the idea is that this type of training generates a massive post-exercise calorie burn that will lead to weight/fat loss.

Normal Weight Men and Women Overestimate Energy Expenditure – Research Review

For the 200 calorie exercise bout, the estimated energy expenditures, that is what subjects thought they burned ranged from 120 to 4000 calories. No, that’s not a typo. 4000 calories. For the 300 calorie exercise bout, the range was 150 to 3000 calories. Again, not a typo. 3000 calories. Let that sink in, for exceedingly moderate amounts of activity, 30-45 minutes of brisk walking some of the study subjects thought they burned 3000-4000 calories.

Low Fat Loss Response After Medium-Term Supervised Exercise in Obese is Associated with Exercise-Induced Increase in Food Reward – Research Review

Now, in the Training the Obese Beginner series, one comment that I made was that most studies have not found a massive impact on exercise in terms of increasing weight or fat loss and I outlined some of the reasons that was the case (mostly focusing on the generally low calorie burn).

But even there, there are often some confusing things that occur in studies of exercise and weight loss, situations where the deficit created by exercise and the measured weight/fat loss aren’t the same. A long-standing question has been why this is the case and there are a number of reasons for it.

Role of Nonexercise Activity Thermogenesis in Resistance to Fat Gain in Humans – Research Review

But as it turns out, that’s not all that’s going on. As I discussed in The Energy Balance Equation one mistake people often make is assuming that the output side of the equation is static; that the energy output of a given individual is invariant over time. But we’ve known for decades that this isn’t the case. In response to both increases and decreases in food intake (as well as body weight), we know that basal or resting metabolic rate (BMR/RMR) can go up and down.

Obesity and Physical Inactivity: The Relevance of Reconsidering the Notion of Sedentariness

Which is all a very long introduction to today’s paper which looks in some detail at two of the major changes in modern life that contribute to our overall ‘inactivity’ during the day: sleep and what the researchers decided to call knowledge based work (KBW). Sleep is fairly explanatory but, by KBW, they are referring to things such as school, jobs involving thought and concentration and even potentially video games. Basically anthing where you’re sitting on your ass for most of it but having to involve your brain rather intently.

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