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Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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19.08.2010 |
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Post-cardio energy burning higher in thin athletes
Athletes with a low fat percentage react better to training than athletes with a high fat percentage. Their bodies build up muscle more easily as a result of training, and they also burn fat more easily. Canadian sports scientists at the University of Alberta published a study in 2006 which provides strong motivation to athletes with a higher body fat percentage to reduce their fat mass.
After a strength training session, we wrote recently, thin people produce more growth hormone than people with a high fat percentage. During the EPOC, thin people burn subcutaneous fat, while fat people mainly burn the fat in their muscle tissue after strength training. This also happens during extended periods of low intensity exercise at 50 percent of the VO2max.
In the Canadian study 7 men with a fat percentage of less than 16 percent and 8 men with a fat percentage of over 25 percent had to cycle for half an hour at more than 60 percent intensity. The researchers monitored the subjects’ blood for the first 2 hours after the exercise session. The first thing they noticed was that the cortisol level rose more in the fat subjects and the growth hormone level rose more in the thin subjects.
After the exercise session the subjects’ oxygen expenditure – i.e. their EPOC – rose 28 percent more in the thin subjects than in the fat subjects.
The higher EPOC in the thin men is accompanied by a higher GH level. Unlikely to be a coincidence, the researchers think.
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