Lab Report 3 Cardiovascular System

Lab Report 3 Cardiovascular System - Jessica Bode March 26,...

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Jessica Bode March 26, 2008 Lab Report 3: Effects of Physical Activity on the Cardiovascular  system Introduction : The cardiovascular system plays an indispensable role in  maintaining homeostasis by moving nutrients, gases, and wastes to and from  cells, fighting diseases, and stabilizing body temperature and pH.  Because its  proper functioning is of the utmost importance, an understanding of its  mechanisms of action and methods of regulation is critical.   In today’s lab we are examining the effects of both static and dynamic  exercises on important measures of cardiac output such as heart rate, blood  pressure, and total peripheral resistance so as to enhance our understanding of  the way the cardiovascular system functions. Methods : Materials :  Stethoscope, blood pressure cuff, cycle ergometer Procedures : 1. To measure baroreceptor reflex, we measured the subject’s blood pressure  while supine, again immediately upon standing, and again 1 minute later. 2. To test the effects of static exercise on cardiovascular function, two subjects  (one male and one female) performed isometric wall-sits at 1.25 METS for 3  minutes and then again at 1.75 METS for 3 minutes.  Blood pressure and  1
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heart rate were measured at rest, after the 1 st  minute, and again after the 3 rd  minute for each, with a 5-minute rest in between the two exercises. 3. To test the effects of dynamic exercise on cardiovascular function, two  subjects (one male and one female) performed two exercises on cycle  ergometers.  Body weight, blood pressure, and heart rate were measured at  rest.  In the first exercise the subjects maintained a rate of about 50 rpms,  with measurements taken after 3 minutes and again after 6.  After 6 minutes,  the resistance was increased to 150 rpms with no break in between, and  measurements were again taken after the 3 rd  and 6 th  minutes. Results
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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.

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Lab Report 3 Cardiovascular System - Jessica Bode March 26,...

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