NUTR 120 Lecture Notes - Lecture 18: Energy Economics, Skeletal Muscle, Basal Metabolic Rate
Document Summary
Protein: what we need vs. what we eat. General n. a trend: many people take far too much protein. Who in na ia at risk for adequate protein intake: dieters & elderly women. Chap 13. 7, p. 557 protein & aa supplements. 60kg 3000kcal (you eat more cuz u workout more) 15% kcal from protein. 15/100 =x/3000 x=450kcal 450kcal/4=112g of protein 112/60kg=1. 9g/kg/day pg 545 sec 13. 4. Amino acids supplements: a concern: absorption and transport issues. Gi tract: there are receptors for particular a. a. Absorption of short peptides vs. individual aa: n- retention: make & retain more body protein when eat complete protein vs individual aa, other considerations. Bottom line: we evolved to get our protein from food. Increased energy (kcal) intake (contributor to overweight: high protein food eg animal protein are often high in fat (9 kcal/g, high protein intake results in increased ca loss. What you eat it with matters & deli meats increases risk.
