NUTR331 Lecture Notes - Lecture 8: Basal Metabolic Rate, Underweight, Amenorrhoea

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2 basal metabolism the sum total of all of the involuntary activities that are necessary to sustain life, including circulation, respiration, temperature maintenance, hormone secretion, nerve activity, and new tissue synthesis, but excluding digestio(cid:374) a(cid:374)d (cid:448)olu(cid:374)tary a(cid:272)ti(cid:448)ities. A quick and easy estimate of energy need: me(cid:374): kg (cid:271)ody (cid:449)eight x24 = cal/day. 3: wo(cid:373)e(cid:374): kg (cid:271)ody (cid:449)eight x 22 = cal/day. To convert pounds to kilograms (kg), divide by 2. 2. As the textbook notes, bmr can be elevated with exercise. Certain types of exercise build lean muscle mass, and the more lean body tissue, the higher the bmr which is why exercise is emphasized in maintaining. The thermic effect of food, or diet induced thermogenesis, is the energy required to digest, absorb, transport, metabolize, and store nutrients from food. You can relate the energy expended for this purpose to the rise in body temperature after a meal is consumed.

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