Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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20.11.2018 |
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Yessir, carbohydrates make you fat: brand new human study
The theory that a diet with many carbohydrates - and especially a diet with a lot of quickly absorbable carbohydrates - leads to overweight and obesity, is not new. A high carb diet allows fat cells to grow, but ensures that the rest of the body gets less energy. Says that theory. Nutritional scientists from the University of Harvard published a trial in BMJ that suggests that this theory is correct.
Carbs, insulin and body fat
"According to this model, the processed carbohydrates that have flooded our lives during the low-fat era have raised insulin levels, driving fat cells to store excessive calories, with fewer calories, hunger increases and metabolism slows - a recipe for weight gain", says research leader Dadid Ludwig in a press release. [sciencedaily.com November 14, 2018]
Study
The researchers divided the subjects into 3 groups. They gave one group a high carb diet; 60 percent of which consisted of carbohydrates. A second group received a moderate carb diet, with 40 percent of the energy coming from carbohydrates. Finally, a third group received a low carb diet, which consisted of only 20 energy percent of carbohydrates. More information about the diets of the test subjects can be found here.
In a laboratory, the researchers determined the energy consumption of the test subjects before, during and after the 12 weeks.
Results
In the low-carb group, calorie consumption increased by 200 kilocalories. In the high-carb group, calorie consumption decreased.
Insulin
The stronger the insulin level responded, the stronger was the effect of a low-carbohydrate diet on calorie consumption. Click on the figure below for a larger version.
Conclusion
"Additional research is warranted to examine the effects of glycemic load on body weight, with control of energy intake. If metabolic benefits of reduced glycemic load diets are confirmed, development of appropriate behavioral and environmental interventions would be necessary for optimal translation to public health."
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