Chapter 7 - Energy Balance and weight management Chapter 7...

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Unformatted text preview: Energy Balance and weight management Chapter 7 Reading assignments 178-185; 195-196 Mondays assignment Answer all 4 questions on page 186 I will need some help lecturing on Monday, so please make sure you read the assigned sections! Energy Balance Energy in = energy out Positive energy balance Energy intake > energy expended Results in ------- Negative energy balance Energy intake < energy expended Results in -------- Energy Balance ? ? Basal Metabolic Rate Basal metabolic rate (BMR) AKA Resting energy expenditure The minimum energy expended to keep body ------ ~60-70% of the total energy needs Amount of energy needed varies between individuals (genetic + other factors) Factors regulating BMR Body surface area (weight, height) -------- Body ------- Thyroid hormone ---------- (V. IMPORTANT!!!!) Age (2% decline/decade past 30) Kcal intake Use --------- (Use in moderation) Physical Activity Physical Activity ---creases energy expenditure beyond BMR More activity, ---- energy burned ------ of activity is the major cause of obesity Thermic Effect of Food (TEF) Thermic Effect of Food Energy used to digest, absorb, and metabolize ------- ~5-10% of the total energy consumed TEF for --- > CHO> ----- Less energy is used to transfer dietary fat into adipose stores (=FAT thermic effect is lowest) Non-Exercise Activity Thermogenesis Nonexercise activity thermogenesis (NEAT) 10 sets of stairs you will burn 50 calories Walking half an hour 4 mph ~ 65 calories Studying your Nutrition notes every night costs ~70 calories/hour Non-exercise activities increase calorie burning : Gym 250 cal (not a NEAT) Walked to classes 65 calories Stairs 65 calories Housework 60 calories Studied 70 calories Total 505 calories Housework 60 calories/hour Versus: No gym Drove car (1.3 cal/min) 1.3* 10 =13 Used elevator 5 Put unwashed dishes in the sink 4 Facebook 35 Total 57 calories Factors involved in food intake Why Do You Eat? Hunger Physiological (internal) drive to eat Controlled by internal body Appetite Psychological (external) drive to eat Emotional eating Often in the absence of hunger e.g., seeing/smelling fresh baked chocolate chip cookies Satiety Regulator The hypothalamus (Brain) When feeding centers are stimulated, they signal you to ----- When satiety centers are stimulated, they signal you to ------- Sympathetic nervous system When activity ------, it signals you to stop eating When activity -------, it signals you to eat Influenced By Body...
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This note was uploaded on 02/02/2012 for the course HWS 332 taught by Professor Bagdash during the Fall '11 term at Binghamton University.

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Chapter 7 - Energy Balance and weight management Chapter 7...

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