Health Sciences 1001A/B Chapter Notes - Chapter 4: Coronary Artery Disease, Subcutaneous Tissue, Female Athlete Triad
15 Jul 2015
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1: canada: 65% (think), 37% (are) overweight, 15% (think), 24% (are) obese. 2 women=60 kg, 2 different percent body fats: energy balance: energy in=energy out; body uses energy to maintain vital body functions, digest food, fuel physical activity. > positive= excess calories stored as fat. > inaccurate: short people, muscular athletes, older adults w/ limited mass. > 18/5-24. 9 (average), 25+ (overweight), 25-29. 99 (pre-obese), 30-34. 99 (obese i), 35-39. 99 (obese ii), 40+ (obese iii), 17. 5 or lower=underweight. Body composition analysis: percent body fat: hydrostatic weighing: weighed underwater, pbf=body density (muscle=higher density, fat=lower density) Factors contributing to excess body fat: genetic: Nutrigenomics: how nutrients/genes interact, how genetic variations cause people to respond differently to nutrients in food. Both parents obese, children=80% increase, 1 parent obese=40% increase. Tendency to develop obesity=inherited, expression of tendency=environmental (ex. diet, exercise: physiological: Metabolism: sum of all vital processes, food energy & nutrients=made to be used by body. Resting metabolic rate (rmr): calories burnt while body is at rest.
