This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Lab Report II: The Relationship between Exercise Intensity and Oxygen Consumption Introduction : Metabolism as generally defined is the sum total of energy requiring reactions that occur in the body and are influenced by a variety of factors including diet, stress, growth. Clarifying relationships between metabolism and these factors is important because metabolic rate has lasting implications concerning weight maintenance and physical fitness, the understanding and health regulation of which are essential in establishing good health. Aerobic metabolism is essential for the continuation of human life. Though the body is capable of synthesizing energy without oxygen (in glycolysis, for example) the vast majority of the body’s store of ATP is created via the electron transport chain, wherein oxygen plays a crucial role as the final electron acceptor. In this experiment we are evaluating human metabolism through indirect calimoretry. By measuring the amount of oxygen consumed and CO 2 expired, we are effectively measuring how much oxygen is required to fuel basic metabolic processes at varying degrees of physical exertion, which gives us a rough approximation of the subject’s metabolic rate. Methods : Equipment used : treadmill, cycle ergometer, 1-way valve & connecting hose, nose plugs, Douglas bag , computer Procedure : To explore energy metabolism, in this experiment we measured the oxygen consumption and caloric expenditure of two subjects while they performed two treadmill exercises (3.5 mph @ 0% grade, 4.0 mph @ 7.5% grade) and two cycle ergometer exercises (3....
View Full Document
This lab report was uploaded on 04/07/2008 for the course APK 2105 taught by Professor Brooks during the Spring '07 term at University of Florida.
- Spring '07