Cardiorespiratory Strength Lab Report

Introduction: In this experiment, cardiovascular fitness is being determined by measuring how long it takes for the test subjects' to return to their resting heart rate. Cardiovascular fitness is the ability to "transport and use oxygen while exercising" (Dale 2015). Cardiovascular fitness utilizes the "heart, lungs, muscles, and blood working together" while exercising (Dale 2015). It is also how well your body can last during moderate to high intensity cardio for long periods of time (Waehner 2016). The hypothesis is that people who exercise for three or more days will return to their resting heart rate much faster than people who only exercise for less than three days.

Enhancing cardiac output allows you to maintain lower heart rates during physical activity. For example, at the start of a program you may have a heart rate of 150 beats per minute while running at a 6 mph pace. After three or more months of training increased cardiac output enables you to sustain the same running intensity at a lower heart rate such as 125 beats per

P6- follows guidelines to interpret collected data for heart rate, breathing rate and temperature before and after a standard period of exercise

The controlled variable included the exercise bike and heart rate monitor. There are several limitations, systematic and random errors that should be considered when interpreting these results. (4) The controlled variables were not tested before this experiment to see if they were working and reliable. Figure 2 heart rate was quite inconsistent and did not follow the pattern of the other results, which maybe suggest a random error with the heat rate monitor. A systematic error could include the fitness of the participants. One of the test subjects is an endurance athlete and the other does not compete in any sport. This would affect the results because for the endurance-trained athlete, from their training they increase their cardiac output results from a substantial increase in maximal stroke volume. In untrained persons, cardiac output increases in response to exercise primarily by an increase in heart rate. The endurance-trained athlete does so mainly by an increase in stroke volume. Simply meaning that although both participants are doing the same cadence and length the endurance athletes skewers the results by already having an increased rate in stroke volume. Another systematic error may include the rate of perceived effort. For the most accurate results, the measured maximum heart rate would be necessary to give an accurate cadence to ride at.

The graphs also show that Sara’s heart takes the longest to recover after exercise, followed by Jonathan and then me. This means that from these results, Sara is the most unfit and I am the fittest out of the three of us. Since all three of us did the exact same kind of moderate and strenuous exercise it shows that Sara’s heart is not as used to

Szent-Gyorgyi discovered that contraction occurs in the presence of adenosine triphosphate (ATP) and KCI. The rate of the contraction is capable of increasing by the presence of MgCI2. [1] KCI consists of salt, which is capable of causing muscles to contract in considerable dosages. The dosage given to the rabbit muscle was a fairly adequate amount, resulting in the muscle contraction of muscle strand #2 (which received treatment B). The MgCI2, also known as magnesium chloride solution, is used frequently as a ready-to-go reaction mixture to increase the reaction of experiments and lab studies.

During rest or normal physical activity muscles use glucose and break it down to CO2 and H2O to give ATPs (energy) to the muscles to work. This reaction requires oxygen which comes from the blood. Therefore your heart constantly requires to pump oxygenated blood from the lungs to the body muscles and carry back the CO2. the independent variable would be exercise, leaving the heart rate as the dependent variable; thus it is the one that it affected. This lab was to fully understand how the heart is affected by exercise.During exercises, more ATPs are required and hence more glucose is broken down, therefore more oxygen is required. therefore the heart needs to pump oxygenated blood into the muscles faster and Therefore the heart rate increases.

Some of my scores did not surprise me but they were disappointing. During the cardiovascular endurance test my heart beat was 119 beats per minute. I was expecting this and was not surprised at all because I have always avoided doing cardio, the most I do is walk my dog, take the stairs, or use the elliptical. I cannot even remember the last time I ran. Actually, I thought I was going to do a lot worse. The flexibility test, I had a lot of confidence going into it and was not surprised to be in the good range with a score just above 18.75 inches. During the balance test, which was the hardest out off all of them, I had a disappointing score of 21

As with the previous two phases the athlete will undergo another series of assessments. This time however the assessments will be different. Whereas before we were looking at areas of explosive strength in sprinting and weighted exercises, this time the emphasis will be placed on cardiovascular endurance. The assessment we will be primarily focused on will be a 1.5 mile run for time and heart rate. The reason we are focused on heart rate is to find his optimal heart rate for prolonged distance. Using a heart monitor we will have him preform the test three time and average of the three heart rates will be the target number. He will of course be allowed a 10 beats per minute cushion to allow for factors that are beyond our control like atmospheric issues such as heat and humidity, and any delayed onset muscle soreness(fitnessschoolbook). Again once all the data has been analyzed we will begin the last phase of the training regime.

This lab has helped me to understand that when you change a factor such as the heart rate what will happen to the other variables. The part that I found challenging was in active 2 was when I had to change the heart rate after 5 seconds. To me to be hard because I tried to time it correctly. The part that I found inserting about this lab was in the begining where you could change the stoke factor. I never fully understood how stokes where caused.

TABLE 1: This table represents the lung capacity of people who do exercise constantly, their lung capacity was measured with the balloon who after that was introduce into the bucket and water was represented en ml in the table below.

Blood is one of the most vital components of the human body. The blood carries many functions such as to supply oxygen to the bodies tissues, remove metabolic waste products, regulate our core temperature as well as fighting infection and foreign bodies (Glover, 1997). The cardiovascular system is composed of the heart and its vessels. The heart is an involuntary muscle which receives blood to the atrias, which is then pumped via the ventricles. The vessels are composed of three main types. Arteries, veins and capillaries; all which transport blood throughout the entirety of the body. The constant action of both the vessels and heart ensure that the body receives a continuous supply of blood, keeping us within our homeostatic limits.

Now that the experiment has been tested, the results are in there comes the analysis part of the process. After I had determined my calculation I saw where my beats per minute were over a hundred; this consider me to be Tachycardia. Tachycardia refers to an abnormally fast resting heart rate. When examining what Tachycardia was and how it can be affected made me see that different scenarios will affect the beats per minute. Anxiety, caffeine, stress can all cause someone to have such a rapid heartbeat. I remember from when taking the echocardiogram that I was stressed

Carry out an experiment to measure the heart rate and ventilation rate before, during and after moderate exercise.

The heart rate is a measurement of how many times the heart beats in a minute. Physically fit people tend to have a lower heart rate and during intense exercise tend to have lower rates as well. A decrease of heart rate at both rest and at fixed intensity of sub-maximal exercise [7] occurs a few months after an exercise program is begun. One’s heart rate reflects the amount of work the heart must do to meet an increase of demands of the body when engaged in activity. Heart Rate tends to increase proportionally with intensity oxygen uptake [16].