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Body Composition & Body Image HPE 1000-01 Wellness

Body Composition & Body Image HPE 1000-01 Wellness. Health Risks Associated with Being Overweight. Coronary heart disease Hypertension Hypercholesterolemia Diabetes. There are also health risks associated with being too thin!. Body Composition (2 compartment model). Fat

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Body Composition & Body Image HPE 1000-01 Wellness

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  1. Body Composition&Body ImageHPE 1000-01 Wellness

  2. Health Risks Associated with Being Overweight • Coronary heart disease • Hypertension • Hypercholesterolemia • Diabetes There are also health risks associated with being too thin! Fundamental Concepts 2e

  3. Body Composition (2 compartment model) • Fat • Lean Body Mass (LBM): (bones, muscles, tissues, organs) Sample calculation: 70kg person with 20% body fat: Lean tissue: 70 kg x .80 = 56 kg Fat tissue: 70 kg x .20 = 14 kg Fundamental Concepts 2e

  4. Regional Fat Deposition (WHR) Fundamental Concepts 2e

  5. Abdominal Body FatRelationships with CHD Risks • Abdominal obesity predicts CHD risk independent of BMI, smoking, cholesterol and hypertension(Kannel et al., J. Clin Epid., 44, 183-190, 1991). • Abdominal obesity predicts CHD risk independent of total body fatness.(Larsson et al. ,Appetite, 13, 37-44, 1989). • Abdominal obesity statistically accounts for the difference in CHD rates between men and women (Larsson et al., Am. J. Epi., 135: 266-273, 1992). Fundamental Concepts 2e

  6. Abdominal Body FatRelationships with other risk factors • Abdominal obesity is strongly influenced by genetics - similar gain among twins (r=.72). (Bouchard, NEJM, 322, 1477-1482, 1990). • Abdominal obesity is greater in smokers than non-smokers due to the presence of androgens (Barrett-Conner, Ann. Int. Med. 111, 783-787, 1989). • Abdominal body fat is preferentially lost during a physical activity program(Kohrt, J. Gerontology, 47: M99-M105, 1992) Fundamental Concepts 2e

  7. Body Composition Estimation • BMI • Circumference Measures • Skinfolds • Bioelectric impedance • Underwater Weighing • Imaging techniques (DEXA, MRI) Fundamental Concepts 2e

  8. BMI’s for Adults Fundamental Concepts 2e

  9. Underwater Weighing Technique Body fat provides more buoyancy so a fatter person weighs less (on a relative basis) than a lean person Fundamental Concepts 2e

  10. Body Composition AssessmentImplications of Results • Values are estimates (+/- 2-3% at best) • Values are personal and confidential Proper uses of results: - Serve as baseline data for repeated testing - Provide motivation for goal setting - Provide awareness about health risks Fundamental Concepts 2e

  11. Current weight = 200 Current body fat% = 20% Desired body fat% = 15% DesiredWeight = 200 - (200 x .20) (1 - .15) DesiredWeight = 160 200 - 40 = 188 = .85 (.85) Calculating Desired Body Weight (Example) Fundamental Concepts 2e

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