HUMNNTR 2210 Lecture Notes - Lecture 14: Lean Body Mass, Diabetes Mellitus Type 2, Childhood Obesity
11 Oct 2016
School
Department
Course
Professor
Document Summary
Acceptable amount of body fat: women: 16-30, men: 11-20% Fat is less dense than lean tissue. Determines the body volume and air displaced in a sealed chamber: body density = (cid:3031) (cid:3050)(cid:3032) (cid:3047) (cid:3031) (cid:3049)(cid:3039)(cid:3048)(cid:3040)(cid:3032, % body fat = (495/body density) 450. Calipers measure fat layer under the skin. Measurements from multiple body sites are used in an equation to calculate % body fat. Device measures resistance to the flow of a low-energy electrical current through the body: lean tissue (high water content) resists electrical current, fat tissue (low water content) resists electrical current. Accuracy of measurement is affected by hydration status. Full-body x-ray scan that allows quantification of body composition: fat tissue, lean tissue, bone mass. Android obesity: apple shaped, usual men and post-menopausal women, increased risk for chronic diseases. Gynoid obesity: pear shaped, usual for women, fewer health risks than android obesity. Section 7. 4: why some people are obese nature vs nurture.
