PSY-3635 Lecture Notes - Lecture 12: Arcgis, Reductionism, Clouding Of Consciousness
25 Oct 2017
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Objectives: define obesity, how to measure overweight and obesity, understand energy balance. Energy expenditure: obesity as person-environment interaction. Weight for height: % ideal body weight; actual weight / ideal weight * 100. Based on blood pressure and build study. Identify weight for each height associated with lowest risk of premature death: body mass index: kg/m2. Body composition: body composition or body fat percent fat weight / total body weight * 100. Methods to measure body fat : underwater weighing, skinfolds, bioelectrical impedance analysis (bia, dexa imaging - dual energy x-ray absorptiometry, problem is all are expensive and/or time consuming and not well suited for routine use. Energy balance: weight regulation is energy balance. Energy intake and energy expenditure must stay in balance. If expenditure exceed intake, you lose weight: energy balance is normally quite remarkable, adults gain an average of 1 pound per year between ages 20 and 55. Women have more rapid gains (especially between age 25 and 35)
