Cardiovascular System: Case Study

Homeostasis can be defined as the balance maintained by the body through negative-feedback to regulate internal conditions within a normal range promoting sustained good health (Seeley, 2006). Exercising initiates a process that propels the body out of its normal parameters, therefore triggering negative-feedback loops with the aim of bringing the internal balance back into homeostasis. Increased energy intensities created through exercise influence heart rate (bpm), respiration and perspiration levels. Each system strives to assist in generating sufficient energy to continue exercising and sustain homeostasis (Sherwood, 2015). Concluding that the body has to work harder in order to maintain the correct internal environment during exercising, it is reasonable to suggest that an increase in heart and respiration rates, as well as

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.

One of the most important systems in the body, keeping it alive, is the cardiovascular system. As a part of the circulatory system, the cardiovascular system pumps blood throughout the body through a network of many arteries and veins, providing it with nutrients and oxygen. Also, the cardiovascular fights infections and disease in the body and creates blood cells. Never the less, blood acts as a filtration system for the body and removes waste, cell debris, or bacteria from the bloodstream.

This experiment was carried out as noted about in Procedure 1. The resting heart rate was established and used as a baseline value from which to compare all future deviations. While data could

The cardiovascular system, which consists of the heart and blood vessels, is the circulatory systems in our body. The major function of the system is transportation; the heart is the system pump and the blood vessels are the delivery routes. The heart transport respiratory gases, nutrients, wastes, and other substances vital to the body’s homeostasis to and from the cells by using the blood as a medium.

Once I started to exercise it caused my heart rate to increase and my breathing rate slowed down slightly. When I did the anaerobic exercises my heart rate went up higher than when I did the aerobic exercises.

The main function of the cardiovascular system in relation to energy is to transport the oxygen and glucose to the cells, and to transport the waste products such as carbon dioxide and urea (waste product from protein digestion) away from the cells and to the lungs or kidneys.

Another test that was taken was the clients blood pressure which was taken using an electronic sphygmomanometer which provided us with both the systolic (refers to the pressure within our arteries when our heart is pumping) and diastolic (refers to the pressure within our arteries when our heart is resting between beats). A third test that was taken was the clients peak flow which had to be done immediately after 5 minutes of exercising in order to get a valid and fair result. Peak flow is measured using a peak flow meter which measures how quickly the air comes out of our lungs that the client exhaled forcefully after fully inhaling. Another test that was taken was the clients RPE which was taken during the period of which the athlete was exercising. It is measured using a scale which the client had to rate themselves on (one being the least tired and 10 being the most tired).

Name(s) : Josh Feagin, Eduardo Campos, and Joel McLaughlin What is the Effect of Exercise on Heart Rate? Objectives Develop a hypothesis about the effects of exercise on heart rate Compare heart rates of individuals at different activity levels Determine the heart's recovery time Safety considerations: If you have any medical conditions that may prohibit you from physical activity, abstain from the activity and gather data from your group. Experimental Questions: How does exercise affect heart rate?

Ensuring that the patient was relaxed and comfortable I began to take her pulse, using my three middle finger tips to locate the pulse. I did so for 15 second and timed by fore for the next 15 seconds I measured her respiration rate and timed by 4. I did not explain to my patient that I was taking her respirations as looking at her chest may have made her feel uncomfortable and increase her respirations. Her pulse rate ending up being 85 beats per minute and respirations were 15 breaths per minute. These results were within normal range, as her pulse rate was between 80 and 120 bpm and respirations were between 12 and 20 (Tollefson, 2010). The change in pulse and respiration rate can increase during excercise. If a pulse is recorded below 50 bpm the patient can be at risk of a heart attach. A fast pulse exceeding 100 bpm can be a sign of infection or dehydration. This can be detected quickly and appropriate action taken to prevent negative affects on the patient’s well being.

During exercise, the sympathetic nerve stimulates the veins to constrict to return blood to the heart. The blood

The cardiovascular systems function is to pass blood through ones body keeping their muscles oxygenated, to keep nutrients that are needed in the body and to help get rid of metabolic waste. The cardiovascular system is made up of three components, these are; the heart, the blood and the blood vessels.

Analysis, Discussion, and Conclusion: The purpose of this experiment was to determine whether athletes or non-athletes would experience a high percent change in heart rate after having experienced a raised heart rate, caused by running one lap around the high school track. The agreed upon hypothesis was that the five subjects in the “athletes” category would recover faster, in comparison to the “non-athlete” category, due to the fact that the athletes’ hearts are more frequently exposed to elevated heart rates. After examining the collected data, it was determined that the hypothesis was refuted, given that the average percent change of the athletes was +16.94%, which is 5.22% greater than the average percent change of non-athletes, as shown in CHART #3 -

Method and results - The study was compiled of seven female students from the University of Huddersfield. For the exercise a step was used, a polar heart rate monitor was used for each participant with an independent assessor timing the participants, and recording the readings. Results of the study showed there was an increase in heart rate when performing mild exercise.

Lab 3.2 evaluated by cardiorespiratory endurance. I was able to determine my maximum heart rate and what training within 65 & 90% intensity looks like in terms of where my heart rate should be. I found this lab extremely helpful because now I can determine my heart rate and at what intensity I am working at, and if I need to adjust to push harder or slow down. I currently have a fit bit and I am able to see my heart rate constantly throughout a workout, but should I not have it, it is good to know how to determine where I am based on my pulse. In this lab I was able to determine that when I work out I am often at 90% of my maximum heart rate when I am doing cardio, my recovery is very good after a finish and I usually feel pretty good after