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Essential amino acids:Children
tryptophan,phenylaline,methionine, valine, threonine, lysine, leucine, isoleucine, arginine, and histidine
Essential amino acids:adults
tryptophan, phenylaline, methionine, valine, threonine, lysine, leucine, isoleucine,
Dietary requirements: Carbohydrates
125-75g/day min to prevent protein loss
55% total cal: 45% of total need to be complex
Roughage (Cellulose): hemicellulose, pectin, lignin
8 adults, 10 children, complete proteins: meats, milks, and eggs, incomplete proteins: many plants
Essential amino acids
Dietary Requirements: Proteins
minimum: .8g/kg (.4g/lb), recommended:155 of total calories, maintain nitrogen balance
Omega 3 fatty acid
polyunsaturated, including 3rd terminal bond, best source is in fish, health benefits include cardiovascular
Dietary Requirements: Lipids
30% total calories-10% saturated, 10% monsaccharides, 10% polysaccharides, 100mg/1,00 calories as cholesterol, no more than 300mg/day
kcals in-kcals out, balance =0, positive: take in too much, store energy, negative : take in to little, use stored energy, weight gain/loss related to energy balance, 3500 kcals/lb fat
measured in bomb calorimeter, carbohydrates:4.1kcal/g, proteins:4.1kcal/g, fats:9.5 kcal/g
Energy in foods
sex, height, weight, age, hormones, emotional state, body temperature, excessive weight fluctuations, and watching t.v
Factors affecting BMR
energy used per day at rest, measured by monitoring O2 consumption, 1 kcal/hr/kg:1,500-2000 kcal/day
Basal metabolic Rate (BMR
70 kg man:2800 kcals/day, proteins-15%, fats-30%, and carbs 55%, diets must maintain proteins, vitamins, minerals
trace element, cofactor: component pf enzymes involved in digestion, respiration, bone metabolism, live metabolism, necessary for normal wound healing and maintain integrity of the skin
trace element, enzyme cofactor, essential for hemoglobin synthesis, bone development, melanin production and myelin formation
trace element, enzyme cofactor, fatty acid and cholesterol synthesis, urea formation and normal functioning of the nervous system
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