FROM OUR EXPERTS
News reports of the recently published Avandia study said that the study showed that the drug increased heart attack rates “significantly.” This is true. The problem is that the meaning of significantly as understood by the general public is very different from the meaning of significantly as understood by medical researchers.
To most of us, a significant increase in weight would mean “a large increase in weight.” But that’s not what it means to statisticians. In the latter case, it means “an increase in weight [large or small] that is statistically significant.”
Statistical significance tells you how likely it is that any differences you find in a study are likely to be due to random fluctuations rather than to the drug or other study intervention that the researchers are measuring. The usual cutoff point is 5%, meaning that there is a 5% chance that the differences were random. However, even the 5% value is not considered very good. Values below 1% are considered more ...
Think of your metabolism as an engine. It's ability to "run" means biochemical processes that keep us alive are ongoing. Your metabolic rate is the pace at which your body uses energy, which is measured in calories. So it's important to know just how many calories you need to "exist" so you can then decide if you are overeating and therefore gaining weight or under-eating and therefore capable of dropping weight.
What do you specifically need the calories for??
•1- To run basic body functions like breathing, blood circulation, to maintain body temperature, basically just to exist.
•2- Calories to burn - they are used in eating, digestion, absorbing nutrients, and storing food. About 10-15% of daily calorie intake goes here.
•3- Calories for physical activity.
So your metabolic rate can increase to process what you eat and of course, to help you move....
Does the rate of heart attack and other heart emergencies increase during sporting events? That's the questions asked by researchers in a study ( http://content.nejm.org/cgi/content/short/358/5/475 ) published recently in the New England Journal of Medicine. They determined that soccer fans experienced more than double the number of heart attacks while watching televised matches of the 2006 World Cup soccer championships in Munich, Germany, compared to other times of the year. (The World Cup is Europe's soccer equivalent of America's Super Bowl, the one sports event that builds fan momentum until the big game.) Only half of the people going to the hospital had a known history of heart disease. That means that the other half had no idea that heart disease was lurking in them. It took the excitement of the game to unmask it. It makes sense: The adrenaline-buzzed excitement that builds during the game, often compounded by smoking, drinkin...
You should know
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