lecture #4 Notes - Measurement of Human Energy Expenditure...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture #4 Measurement of Energy Measurement of Human Energy Expenditure Understand the following: Heat of combustion (Calories) Atwater factors How to measure kCal Quantify energy release in metabolism Quantify food mixture metabolized
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Lecture #4 Measurement of Energy What is a Calorie? A measure of heat transfer 1. Quantity of heat necessary to raise the temperature of 1 kg (1L) of water 1 degree Celsius (from 14.5 to 15.5 degrees Celsius. 2. If a food contains 300 kCal then releasing the potential energy trapped within this food’s chemical structure increases the temperature of 300 L of water 1 degree Celsius. 3. Different foods contain different amounts of heat energy.
Background image of page 2
Lecture #4 Measurement of Energy How to Measure Calories? The Bomb Calorimeter Figure 1. Bomb calorimeter directly measures the energy value of food.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Lecture #4 Measurement of Energy Heat of Combustion The heat liberated by oxidizing (burning) food in a bomb calorimeter represents its
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/01/2008 for the course MOVESCI 111 taught by Professor Danek during the Winter '08 term at University of Michigan.

Page1 / 19

lecture #4 Notes - Measurement of Human Energy Expenditure...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online