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| joint health, natural hormone replacement, antioxidents, muscle, home, function, mmusa, diet analysis, kathy smith, mr. universe, slimming program, glycemic, lunch, muscle link, women, superior, fat calipers, minerals, measurebody fat percentage price finder - digital camera price guide, methoxy, shaker bottle, | As an approximation, assume analysis that the body consists analysis of two components -- lean tissue and fat tissue. Letting D = body density, W = body weight, A = proportion of lean tissue, B = proportion of fat tissue (so A + B = 1), a = density of lean tissue, and b = density of fat tissue, we have D = weight/volume = W/[lean tissue volume + fat tissue volume] = W/[A*W/a + B*W/b] = 1/[(A/a) + (B/b)]. Solving for B we find B = (1/D) * [ab/(a - b)] - analysis [b/(a - b)]. 5 Using the estimates a = 1.10 |
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| 2 Such predictive equations for the determination of body fat can be determined through multiple regression. A group of subjects is gathered, and various body measurements and an accurate estimate of the percentage of body fat are recorded for each. superior Then body fat can be fit to the other measurements using multiple regression, giving, we hope, a useful predictive equation for people similar to the subjects. The various measurements other than body superior fat recorded on the subjects are, implicitly, ones that superior are easy to obtain and serve as proxies for body fat, which is not so easily obtained. 3 In the dataset provided by Dr. A. Garth Fisher (personal communication, October 5, 1994), age, weight, height, and 10 body circumference measurements are recorded for 252 men. Each man's percentage of body fat was accurately estimated by an underwater weighing technique discussed below. A complete listing of the variables in the dataset appears in the Appendix. 2. Determination of the Percentage of Body Fat from Underwater Weighing 4 The percentage of body fat for an individual can be estimated from body density. |
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