Health Sciences 1001A/B Lecture Notes - Lecture 4: Body Composition, Body Mass Index, Calorie Restriction
13 Sep 2013
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Document Summary
Maintaining a healthy weight: a public health challenge. Health canada reports that approximately 61% of canadian adults are overweight, including 24% who are obese. By 2021, estimated 70% of males and ~50% of females will be overweight or obese. Body composition: subcutaneous fat, visceral fat, ectopic fat. Energy balance: when energy in equals energy out, maintain current weight. Evaluating body weight and body composition: height-weight charts, body mass index, bmi >30 = obese, not a great predictor of health. Excess body fat and wellness: several health risks. Skin problems: distribution of body fat important indicator of health. Apple: all fat distributed in organs and around heart. Pear: fat distributed in hips: not surrounding major organs. Men = apple, women = pear: waist circumference is sometimes used as marker for current and potential health challenges. Negative body image: characterized by dissatisfaction with body in general or some part of body in particular.
