HLTH 331 Lecture 6: Week 6 - Weight and Energy Balance
15 Feb 2017
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In 2004, 60% of adults in canada overweight or obese. Carrying extra body fat = increased risk for chronic diseases (high blood pressure, diabetes, heart disease) Energy balance - energy consumed = energy expenditure. Energy measured in kcals (amount of energy supplied to or expended by the body) or kjoules. O(cid:448)er(cid:449)eight: too hea(cid:448)y for one"s (cid:449)eight or bmi of 25-29. Obesity = characterized by excess body fat or bmi over 30. Energy yielding nutrients carbs, lipids, proteins, alcohol. Bomb calorimeter instrument determining energy content of food measures heat energy released when a dried food is combusted. If cycle is disrupted = no atp = no energy derived from food you eat. Glucose, fatty acids, amino acids broken down by cellular respiration = atp. Amino acids broken down from nitrogen components (de-aminated) broken down to form other intermediates. Total energy expenditure (tee) = sum of energy used for basal metabolism, activity, processing food, deposition of new tissue, production of milk.
