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| rope, oxygen, antioxidants, sustainablefisheries, repeatability, fatskin, ediet, inversion, shoppingforvitamins, cytodyne, senior centers, | Careful analysis can then measure how the special isotopically-labelled water nature's answer has been diluted in the body. In this way it is possible to nature's answer 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. A scanning technique can also be used to nature's answer measure the composition of the body. Dual energy X-ray absorptiometry (DXA) was originally developed to measure bone and it is widely used to diagnose osteoporosis, but it can also estimate the amount of 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. |
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| This requires a measurement of body weight and body volume. Weight is easily measured, but volume is more complex. Body volume is usually measured by water displacement (Archimedes principle), which involves senior centers totally submerging the senior centers subjects underwater. 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 amount of lean and fat tissue. Fat does not contain any water whereas lean tissue is about 73% water. Stable (non-radioactive) isotopes of oxygen senior centers 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. |
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