KINESIOL 1F03 Lecture Notes - Lecture 8: Body Mass Index, Basal Metabolic Rate, Body Composition
19 Feb 2016
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Document Summary
Energy in = energy out: shift in balance causes weight changes. Amount of fat deposited depends on energy balance: positive energy balance energy in > energy out, results in fat gain. Rapid changes in weight are not just fat changes: fat changes are gradual, 1 pound of fat = 3500 kcalories. Excess energy is stored as fat: fat is used as energy. Determines how much energy a food has: burning food releases energy as heat, Heat provides a direct measure for a foods energy value: oxygen and carbon dioxide is an indirect measure. An alternate option is to calculate the kcalories: 1 g cho = 4 kcal, 1 g fat = 9 kcal, 1 g pro = 4 kcal, 1 g alcohol = 7 kcal. Stretching of the stomach: a response to the meal composition, high fibre and protein is more satiating compared to fat. The generation of heat: measures how much energy we expend.
