KINS 1224 Final: Nutrition_notes (3)
17 Apr 2016
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Kilocalorie (kcal) or calorie (c) are used interchangeably. Methods- calorimetry= science of measuring heat of chemical reactions or physical changes. energy released as heat over a period of time. a) Direct calorimetry- measures metabolic rate by amount of organism by measure of oxygen uptake. b) The amount of energy liberated in the body per unit of time like kcal/h or kcal/day. Resting metabolic rate is the energy required by an animal to stay alive with no activity. Factors which influence rmr: mental health physical activity thyroid hormones absorptive or post-absorptive status. Determine weight in kilograms (1 kg = 2. 2 lbs) Use gender specific formula to determine rmr based on body weight a) Rmr = weight (kg) x 1 x 24 (hr/day) = kcal/day. Rmr = weight (kg) x 0. 9 x 24 (hr/day) = kcal/day b) Practice: rmr = __100___ (kg) x _1____ (factor) x 24 (hr/day) = _2400____ kcal/day.
