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ex phys lab 3

# ex phys lab 3 - Wendy Cap Post Lab 3 Exercise Physiology...

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02/26/08 Post Lab 3 Exercise Physiology Lab 2 Title: Resting Metabolism Purpose: The purpose of our experiment is to determine how much energy is consumed at rest. This is measured as the Basal Metabolic Rate (BMR) which represents the energy consumed by the body at rest to maintain life and normal functions of the body. Method 1) Prior to taking Resting Metabolic Rate (RMR), which is the same as Basal Metabolic Rate (BMR) except its pre-experiment preparation is not as stringent, the subject should be in a post-absorptive state. a. Post-absorptive state is the state where the GI tract is empty, which allows for the use of reserved fuel stores for energy as opposed to readily available foodstuffs. Metabolism in this time is primarily controlled by the sympathetic nervous system and during this time, maintenance of glucose homeostasis is very important. 2) Set up valve and tubing of the nosepiece to connect the subject to the metabolic cart. The metabolic cart will measure the indirect calorimetry which will be used to calculate resting metabolism. 3) Lie the subject down on the table 4) Record pre-test Blood pressure and heart rate 5) Record blood pressure and heart rate every 3 minutes on the computer 6) The testing will take 12 minutes. Be sure to make the testing environment as restful and comfortable as possible so that the subject is relaxed. This is so that the subject is not in an excited state where breathing levels will go up. No noise and low light. 7) Calculate your predicted BMR from the following equation: Males: BMR (kcal/day) = 66.47 + (13.75 x body weight; kg) + (5.0 x height; cm) – (6.76 x age; yr.) Females: BMR (kcal/day) = 655.1 + (9.56 x body weight; kg) + (1.85 x height; cm) – (4.68 x age; yr.) 8) Convert kcal/day into L/min: 1 L O 2 = 5 kcal 9) Using the Nomogram to calculate body surface area. a. Body surface area is important because RMR is expressed in terms of body surface area. This is so that comparisons of RMR between two people of different sizes can be made. 10) Compare the predicted values with the values from the computer.

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ex phys lab 3 - Wendy Cap Post Lab 3 Exercise Physiology...

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