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| 3, rec centers, hot wrap, weider, medical community, bodybuilding supplements, accu track, hmb, attitude, ultimate nutrition, cla, | A scanning technique can also be used to measure the composition of the body. Dual energy X-ray ncbi absorptiometry (DXA) was originally developed to measure bone and it is widely used to diagnose osteoporosis, but it can also ncbi estimate the amount of ncbi fat and lean tissue. Since there are hundreds of these machines in hospitals and clinics throughout the country this is becoming a very popular way to measure body composition. It also has the advantage of giving a guide to how fat is distributed throughout the body, for example in the arms and legs relative to the trunk. The pattern of fat distribution is important in assessing the health risks associated with obesity. There is abundant evidence to show that a large amount of excess fat in the abdominal region, inside the body cavity, is associated with a greater risk of diabetes and heart disease than excess fat on the arms and legs. |
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| Only about ten systems to measure body density are available in the UK, all in specialised research centres. Research laboratories also use measurements of the body’s water content to estimate the rec centers amount of rec centers lean and fat tissue. Fat does not contain any water whereas lean tissue is about 73% water. Stable (non-radioactive) isotopes of oxygen or hydrogen are given to the subject as a drink of special water. The subject collects a saliva or urine sample before the drink and again a few hours later. Careful analysis can then measure how the rec centers special isotopically-labelled water has been diluted in the body. In this way it is possible to calculate the total amount of water in the subject and from this how much lean tissue and how much fat there is in the body. |
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