Effects on Heart Rate Lab
When you exercise it increases the amount of energy your body needs which increases the amount of oxygen your body needs as well. A person's breathing speeds up to get more oxygen into the body and to get rid of carbon dioxide when they exercise, so their heart rate increases (The effect of exercise on pulse and breathing rate, 2014). Your heart then expands from blood being pumped out of the heart (The effect of exercise on pulse and breathing rate, 2014). Like all muscles in your body when you exercise your heart becomes stronger. Your heart becomes stronger from pumping more blood throughout your body. This makes your heart beat faster which causes your heart rate to increase(Exercise’s effect on the heart, 2008). When you exercise a person's muscles use more energy (Why does exercise make your heart rate go up?). Therefore your heart needs to beat faster to supply the muscles with the oxygen that they need for them to produce more energy (Why does exercise make your heart rate go up?). This also is a reason why your heart rate will increase when you
…show more content…
This hypothesis is supported because the data I collected supports this statement. I know my hypothesis is supported because when I did the experiment my heart rate increased when I did jumping jacks and then decreased when I stopped doing jumping jacks. This experiments data shows this in the graph and in the data table. For example, when I started this experiment my heart rate was 28 BPM and once I did jumping jacks my heart rate went up to 102B PM and when I stopped my heart rate went back down to 72 BPM, and this continued throughout the experiment. When you exercise your body needs more oxygen so the heart beats faster causing your heart rate to increase. The data I have collected shows this from doing the experiment. The data supports my hypothesis because it shows how exercise does increase heart rate in
There are several different heart problems that show up as an abnormal EKG reading. For example, a heart block can occur when there is a delay in the signals coming from the SA node, AV node, or the Purkinje fibers. However, clinically the term heart block is used to refer to an AV block. This delays or completely stops communication between the atria and the ventricles. AV block is shown on the EKG as a delayed or prolonged PR interval. The P wave represents the activity in the atria, and the QRS complex represents ventricular activity. This is why the PR interval shows the signal delay from the AV node. There are three degrees of severity, and if the delay is greater than .2 seconds it is classified as first degree. Second degree is classified by several regularly spaced P waves before each QRS complex. Third degree can be shown by P waves that have no spacing relationship to the QRS complex. Another type of blockage is bundle branch block. This is caused by a blockage in the bundle of His, creating a delay in the electrical signals traveling down the bundle branches to reach the ventricles. This results in a slowed heart beat, or brachycardia. On an EKG reading this is shown as a prolonged QRS complex. A normal QRS is about .8-.12 seconds, and anything longer is considered bundle branch block. Another type of abnormal EKG reading is atrial fibrillation, when the atria contracts very quickly. On the EKG this is shown by no clear P waves, only many small fibrillating waves, and no PR interval to measure. This results in a rapid and irregular heartbeat. On the other hand, ventricular fibrillation is much more serious and can cause sudden death if not treated by electrical defibrillation.
In this lab, I took two recordings of my heart using an electrocardiogram. An electrocardiogram, EKG pg. 628 Y and pg. 688 D, is a recording of the heart's electrical impulses, action potentials, going through the heart. The different phases of the EKG are referred to as waves; the P wave, QRS Complex, and the T wave. These waves each signify the different things that are occurring in the heart. For example, the P wave occurs when the sinoatrial (SA) node, aka the pacemaker, fires an action potential. This causes the atria, which is currently full of blood, to depolarize and to contract, aka atrial systole. The signal travels from the SA node to the atrioventricular (AV) node during the P-Q segment of the EKG. The AV node purposefully delays
In the study it was hypothesized, that the pulse rate does not increase after a step test exercise. This hypothesis is not valid because the result of the step test proves otherwise. In the study, the individuals who participated in the step test took their pulse rates before and after the step test, looking at the overall results, figures and the averages of both tests, we can conclude that the step test exercise does affect the pulse rate of an individual.
The heart is an extraordinary structure that is the base of all human life. However, it similar to the uncomplicated functions of water pumps. As the heart beats, blood is distributed throughout the body using a network of blood vessels. The functions of the heart can be kept in regular and healthy conditions through exercise. Exercise has an effect on the blood that is circulating through the body. That circulating blood makes the heart desire more oxygen, causing the heart rate to increase rapidly to keep up with activity demand.
The main question being asked here is how exactly does exercise intensity affect heart rate and blood pressure levels. As exercise intensity relates to heart rate, we believe that as exercise intensity increases, heart rate will go up, but recover slightly during the recovery period. As exercise intensity relates to blood pressure, we would expect both systolic and diastolic numbers to go up as intensity increase, with systolic increasing more due to the body’s need of more blood.
... uptake during submaximal exercise but did increase heart rate and the rate-pressure product at rest and during both exercise and recovery’.
One of the major systems of the body, which is effected by cardiovascular conditioning, is the circulatory system. With proper exercise the heart becomes stronger and is able to use energy more efficiently. Blood pressure will lower because the heart muscle does not have to work as hard to pump the blood. The heart will beat fewer times per minute while it is at rest, but it will be able to deliver a greater amount of blood with each stroke as a result of adequate conditioning. Conditioning has other benefits to cardiovascular fitness as well. It will increase oxygenation of the blood due to the fact that while exercising deep breathing increases the blood flow to the lungs. Under a well-planned conditioning program conditioning can help to decrease cholesterol and the incidents of deadly heart disease. Individuals who exercise regularly have a lower rate of heart attacks than individuals who do not participate in an exercise program. One of the most important aspects of conditioning for the heart is the warm-up. Warming-up before intense exercise gradually increases the heart rate and prevents abnormal heart rhythms. Sudden extreme exercise can cause the heart to demand more oxygen than the circulatory system can provide, resulting in strain on the heart muscle. Warming-up will help to prevent heart attacks that result from abnormal heart rhythms.
•While exercising your lungs tries to increase the intake of oxygen as well as release the carbon dioxide.
These results make sense because the heart beats faster in order to keep the body’s cells well equipped with oxygen. For one to continue exercising for long amounts of time, cells need to create ATP in order to use energy. Oxygen must be present for the process of creating ATP, which not only explains why higher respiratory rates occur during exercise but also faster heart rates. When the heart is beating rapidly, it is distributes oxygenated blood as fast as the body n...
Diet and exercise were the only 2 doable and so my partner and I chose exercise. We determined that as the intensity of an exercise increased, so did the heart rate of the person performing it. Hypothesis – I predict that as the intensity increases during exercise, the heart rate will also increase. I think this is because your body needs oxygen in order to efficiently break down glucose and process it into your cells.
= The results that I have gathered from my experiment I have put into graph form. From my results I have found out that the more I exercise the longer I exercise the longer it takes for my pulse to return to normal, I think that I did not reach my potential maximum heart rate because the exercised was not strenuous enough for my body. I also discovered that when taking my pulse it takes a few seconds for the strong pulse to get back to the surface.
Investigating the Effect of Exercise on the Heart Rate Introduction For it's size the heart has the huge capacity of pumping large amounts of blood, in the average adult's heart beats 60 to 100 times a minute, pumps between 70ml and 100ml of blood with each beat, circulates 5 to 6 litres of blood around the body per minute and about 13 litres of blood per minute during vigorous exercise. The heart will beat more then 2.5 billion times during an average lifetime. This investigation will be looking at the effect of exercise on the heart rate. Aim The aim of this investigation is to find out how exercise affects the heart rate, using research & experimenting on changes and increases in the heart rate using exercise. Research â— The heart The normal heart is a strong, hardworking pump made of muscle tissue.
This experiment is designed to test whether or not gender is a major contributing factor to the recovery heart rate in humans. Most would assume that the male heart rate would be considerably faster in recovery time than that of the female. This experiment furthers that assumption by eliminating uncontrolled variables such as age, build, and health conditions.
body has to work harder I think that the heart will then increase at a
Just as other muscles become stronger with exercise, so does the heart. The stronger the heart, the more efficient it becomes at pumping blood to the entire body. Over time exercise can lower blood pressure, which lessens the risk of experiencing a stroke or heart attack. Physical activity is linked to a reduced risk of many age related diseases. Among those diseases is cardiovascular disease. For people with cardiovascular disease, physical activity can lessen their risk of dying from it, and for those without, exercise can prevent them from attaining the disease. Since the heart is a muscle, it too needs to be exercised to perform at its