NUTR-4240 Chapter Notes - Chapter 21: Brown Adipose Tissue, White Adipose Tissue, Lipid Droplet
15 Dec 2018
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Document Summary
Body weight is used to determine composition in different models and estimates body fat. A two-compartment model divides the body into fat mass, the fat from all body sources including the brain, skeleton and adipose tissue, and fat-free mass, which includes water, protein, and mineral components. Lean body mass is muscle; is higher in men than in women, increases with exercise, and is lower in older adults. It is the major determinant of the resting metabolic rate (rmr). It follows that a decrease in lbm could hinder the process of weight loss. Water which is 60-65% of body weight, is the most variable component of lbm, and the state of hydration can induce fluctuations of several pounds. Total body fat is the combination of essential and storage fats, usually expressed as a percentage of total body weight that is associated with optimum health.
