Study Guide-Test 1


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PHE 170 INTRODUCTION TO EXERCISE EXAM 1 STUDY GUIDE Chapter 1 1. Understand what Exercise Science is and the different subdisciplines. Exercise science is the science of human movement. Subdisciplines: exercise physiology, biomechanics, motor learning and control, and exercise and sport psychology 2. What are the different subdisciplines interested in? Exercise physiologists are interested with how the body’s physiological systems respond to movement. Biomechanists are interested in the physical principles that underlie human movement. Researchers in motor learning and control are interested in how human movement is controlled. Sport and exercise psychologists are interested in the scientific study of psychological issues related to movement. 3. How do we study Exercise Science? We use the scientific method – observation, hypothesis, experiment 4. Understand the difference between anecdotal and scientific evidence. Anecdotal evidence is based on information that may not represent clear truth or scientific data; scientific evidence is based on research. 5. Understand the scientific approach to studying Exercise Science. ??? Chapter 2 1. Know the basics to skeletal muscle function. The bones of the skeletal system work as levers and the skeletal muscles provide force for movement. 2. Know the components of muscle contraction. The actin and myosin filaments move across one another to generate force. 3. Know concentric, eccentric, isometric, isotonic contractions. Concentric=shortening Eccentric=lengthening Isometric=contraction at a single point in the range of motion Isotonic=contraction through the entire range of motion
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4. Know the various energy sources: ATP-PC; Glycolysis; Krebs/Electron Transport; Beta Oxidation and when do we use these systems during exercise. ATP (Adenosine triphosphate): Used by all cells, can be used by skeletal muscles for movement CP ( Creatine phosphate): Compound stored in small amounts in muscle cells, can be converted into ATP when energy needs are high and supply is low Food is an energy source, especially fats and carbs Glycogen and glucose: Glucose supplies are limited in the muscles; glycogen is stored in the skeletal muscles and liver and broken down when needed Glycolysis: The conversion of glucose into ATP (anaerobic) Krebs cycle/electron transport: The majority of glucose to ATP conversion happens via the Krebs cycle and the electron transport chain, not glycolysis (aerobic) Beta-oxidation: The conversion of free fatty acids into ATP; after beta- oxidation, Krebs cycle and electron transport chain must still happen to get usable energy. Which is used depends on the supply of energy available and the rate at which
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This test prep was uploaded on 04/17/2008 for the course PHE 170 taught by Professor Dawncastro during the Spring '07 term at Indiana Wesleyan.

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