NTDT200 Lecture Notes - Lecture 10: Body Composition, Fructose, Calorie
6 Jan 2018
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Document Summary
Hunger is affected by : presence or absence of nutrients in bloodstream, size and composition of preceding meal, customary eating patterns, climate, physical activity, hormones, illness. Triggers other than hunger: boredom, anxiety, stress, sight or smell of food, taste, memories, social interactions, availability of food. Total energy expenditure: basal metabolism (50-65%, physical activity (30-50%, food consumption (10%) Basal metabolism: energy needed to maintain life when body is at complete digestive, physical, and. Increased: greater height, growth, more lean body mass. Decreased: increasing age, greater proportion of body fat than lean tissue, fasting/starvation, malnutrition, while sleeping. Physical activity: most variable and changeable aspect of energy expenditure, energy needed for activity depends on: Thermic effect of food: 10% of energy expenditure, energy expended during: Body composition: measured indirectly, better measure of fatness than weight. Rationale: if bmi > 25, increased mortality, obesity-related diseases, if bmi < 17, illness, reduced work capacity, poor reproduction function.
