11:709:255 Study Guide - Final Guide: Energy Economics, Thermogenesis, Cholecystokinin
22 Dec 2019
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Ch 8 and 9 energy balance & obesity. Fat is used for energy between meals. Capacity to store up to 200,000 kcal. 1 pound of fat = 3500 kcal. Basal metabolic rate (bmr) - energy for life sustaining activity. Higher lean body mass (lbm) increases bmr. Increases with height, fever, stress, temperature, smoking, caffeine. Resting metabolic rate (rmr) - similar to bmr + thermic effect of food (tef - 10% of energy expenditure) Tef is the smallest component of energy expenditure. Depends on how active a person is. Bmi = weight (kg) / height m^2) Healthy weight: bmi = 18. 5 to 24. 9. May have inflated perception of ideal body weight (ibw) which can lead to underestimation of how overweight they are. Overweight and obesity in adults (66. 3%) in the us have reached epidemic numbers. Overweight children and adolescents are increasing (17. 1%) . 2 billion of nearly 21% of annual medical spending in the us. Adipocytes (fat cells) enlarge (hypertrophy and hyperplasia)
