Experiment to Measure the Heart Rate and Ventilation Rate Before, During and After Moderate Exercise
Human Biology Unit 2 Assignment
Aim:
Carry out an experiment to measure the heart rate and ventilation rate before, during and after moderate exercise.
Introduction:
I predict that during exercise the heart and respiratory rate (RR) will increase depending on the intensity of exercise and the resting rates will be restored soon after exercise has stopped. I believe that the changes are caused by the increased need for oxygen and energy in muscles as they have to contract faster during exercise. When the exercise is finished the heart and ventilation rates will gradually decrease back to the resting rates as the muscles’ need for oxygen and energy will be smaller than during exercise.
Experiment:
1. To start with the experiment we measured the persons resting heart rate and respiratory rate where there was no strain on the muscles. We continued to check both pulse and respiratory rates at 30 second intervals during the course of exercise. 2. We decided to make the length of each consecutive exercise 30 seconds long. Between each session we allowed the student’s pulse and respiratory rate return to their resting rates, otherwise the results would not be fair if both rates were higher at the start of the exercise. 3. Throughout each exercise the student made sure that equal paces were maintained so that it would not affect the heart or respiratory rate in a different way.
Immediately after exercise the subject sat down in a chair so that both the heart and respiratory rates could be taken. The pulse rate was measured first for 15 seconds, if we had taken the pulse rate for 1 minute the pulse rate would have slowed down. As soon as the pulse rate was taken we then took the respiratory rate for 15 seconds. We then waited for both rates to return to their normal resting rates before starting the next exercise.
Fair Testing:
Our experiment was about how the heart and respiratory rates are affected by exercise. Unless we use a stethoscope we
Aim:
Carry out an experiment to measure the heart rate and ventilation rate before, during and after moderate exercise.
Introduction:
I predict that during exercise the heart and respiratory rate (RR) will increase depending on the intensity of exercise and the resting rates will be restored soon after exercise has stopped. I believe that the changes are caused by the increased need for oxygen and energy in muscles as they have to contract faster during exercise. When the exercise is finished the heart and ventilation rates will gradually decrease back to the resting rates as the muscles’ need for oxygen and energy will be smaller than during exercise.
Experiment:
1. To start with the experiment we measured the persons resting heart rate and respiratory rate where there was no strain on the muscles. We continued to check both pulse and respiratory rates at 30 second intervals during the course of exercise. 2. We decided to make the length of each consecutive exercise 30 seconds long. Between each session we allowed the student’s pulse and respiratory rate return to their resting rates, otherwise the results would not be fair if both rates were higher at the start of the exercise. 3. Throughout each exercise the student made sure that equal paces were maintained so that it would not affect the heart or respiratory rate in a different way.
Immediately after exercise the subject sat down in a chair so that both the heart and respiratory rates could be taken. The pulse rate was measured first for 15 seconds, if we had taken the pulse rate for 1 minute the pulse rate would have slowed down. As soon as the pulse rate was taken we then took the respiratory rate for 15 seconds. We then waited for both rates to return to their normal resting rates before starting the next exercise.
Fair Testing:
Our experiment was about how the heart and respiratory rates are affected by exercise. Unless we use a stethoscope we
References: 1) CRY Website (CRY 2003) SADS Sudden Arrhythmic Death Syndrome (Internet) Available at: http://www.sads.org.uk/heart_function.htm (Accessed on 26th February 2012). 2) Zygote Media Group, Inc. (2011) 3D Science.Com (Internet) Available at: http://www.3dscience.com/3D_Images/Human_Anatomy/Respiratory/Gas_Exchange/Alveolar/During_Activity.php (Accessed on 26th February 2012). 3) Collins Advanced Science Human Biology Third Edition (Mike Boyle & Kath Senior) Published 2008