HSS 2342 Lecture Notes - Lecture 9: Foodborne Illness, Amenorrhoea, Muscle Dysmorphia
28 Mar 2017
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Document Summary
Energy balance and body composition: energy balance. Energy balance is when energy in = energy out. Any shift in balance causes weight changes, where rapid changes are not just fat changes, because fat changes are gradual. Excess energy is stored as fat and fat is used for energy between meals: energy in: food intake. A bomb calorimeter is used to burn food, with energy release in the form of heat. Hunger: physiological in uences (ie. empty stomach) and sensory in uences (thought, sight, smell, sound, taste) cue appetite. Keep eating: in uenced by cognitive in uences (ie. presence of others, social stimulation, perception of hunger, favourite foods, time of day, etc. ) Satiety (several hours later): post-absorptive in uences cause hunger to develop. Fgf21 is a endocrine factor induced during states of metabolic stress such as consumption of high-fat/high-sucrose diets which helps us limit the consumption of carbohydrates: energy out: components of energy expenditure.
