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Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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23.02.2011 |
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Slimmers' breakfast: 550 milligrams calcium and 9 micrograms vitamin D
If you make sure your breakfast contains 550 mg calcium and 9 mcg vitamin D, you'll burn more calories and eat less during the rest of the day than you would after a breakfast without such high quantities of calcium and vitamin D. Researchers at Curtin University of Technology in Australia report this in an article that will appear soon in Clinical Nutrition. And to set the record straight from the start: the study was financed by Dairy Australia.
The researchers did an experiment with 11 subjects in their mid fifties. On one occasion they ate a normal breakfast [LCT] and on the other the milk they drank contained extra calcium and vitamin D [HCT].
The LCT breakfast provided 250 mg calcium and 0.3 mcg vitamin D; the HCT breakfast provided 540 mg calcium and 9 mcg vitamin D. Apart from that the two breakfasts were identical.
During the first 8 hours after breakfast the researchers measured the amounts of calories, fat and carbs the test subjects burned. They discovered that the subjects' heat production increased more after the HCT breakfast, with extra calcium and vitamin D, than after the LCT breakfast. The HCT breakfast inhibited the burning of carbohydrates and stimulated fat burning.
Four hours after breakfast the test subjects were given lunch, which was not fortified with calcium and vitamin D. After breakfast and after lunch the concentration of noradrenalin in the blood fell – but in the HCT group it went down by less. Throughout the day the concentration of glycerol in the blood rose – an indicator of fat burning – but in the HCT group the rise was bigger.
Adrenalin and noradrenalin tell the fat cells that they have to release fatty acids into the bloodstream. The organs can then burn the fatty acids.
The breakfast fortified with calcium and vitamin D also suppressed appetite. The test subjects ate up to 15 percent less throughout the rest of the day.
Sponsored studies should always be approached with caution, especially ones done by the dairy industry. But if the research is correct, you could achieve these effects with dirt-cheap supplements. Calcium and vitamin D supplements are on sale everywhere for next to nothing.
If your breakfast consists of protein shakes then you don't need to include calcium supplements. Casein powders for sure, and whey preparations too, contain high quantities of calcium.
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