Hypothesis – I predict that as the intensity increases during exercise the heart rate will also increase. I think this because your body needs oxygen in order to efficiently break down glucose and process it into your cells. As the exercise intensifies, you need more energy and therefore more oxygen. Your blood carries oxygen from the lungs to your muscles. To keep up with these increased oxygen needs, you have to have more blood going to your muscles. As a result, your heart pumps faster, sending more oxygenated blood to your muscles per second.
Aim- To determine if the intensity of an exercise affect the heart rate of a 15-year-old boy.
- 2 stopwatches
- 1 laptop (beep test)
- 1 fire glass long tape (min. 20 meters)
- Chalk to mark 20 meters (start to finish)
1) Get beep test ready on laptop from - http://www.youtube.com/watch?v=e0U_yQITBks -
2) Bring five male subjects ready at the starting line to run the beep test.
3) Mark 20 meters on the ground outside on the AstroTurf using a fire glass long tape. (Start to finish)
4) Only after the first beep goes and not before, must subjects start running.
5) When s...
... middle of paper ...
...executed was on the AstroTurf outside the school. This could have affected the subject’s performance and how the results were measured. To improve this, the experiment should have been carried out in a science lab on a treadmill so that the environment is constant and so that the heart rates are easier to measure. Thirdly, the temperature of when the experiment took place was about 10°C which may have affected the subject’s performance. If this experiment were recurrent then 5 subjects would do it inside (room temp. 21°C) using the treadmills and wearing the right clothing, and another 5 would do it outside to see if this factor did in fact affect the results and cause them not to be as accurate as it could be. Then we would be able to compare the two temperatures. Overall this experiment ran smoothly with some problems, which can be improved as I explained above.
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- Introduction: Caffeine is produced by plants as an insecticide. It is a drug that acts as a stimulant in humans and causes a raised heart rate, and is used to give more energy in drinks such as tea and coffee, add flavour to drinks such as coke, and in weight-loss foods. A raised heart rate increases the risk of cardiovascular disease as it makes the heart work faster which can wear it out. High levels of caffeine have been linked to increased stress and insomnia, which is also linked to heart disease as it raises blood pressure.... [tags: biology]
779 words (2.2 pages)
- The experiment is a psychological study designed to help people improve their memory. However, the experimenter wants study a new method that will improve learning and memory by forcing people to learn. Researchers should know that positive reinforcement for correct responses is a way to develop animal and human memory. However, they want to figure out if pushing someone for incorrect responses will show similar effects. The teacher will give the student a set of pairing words to memorize within a certain time period.... [tags: learn, reinforcement, responses, voltage]
582 words (1.7 pages)
- Synoptic Biology Synoptic biology is the ability to select and apply general principles to unfamiliar situations/data. Modules 5 and 8 will have questions that test your understanding of modules 1,2,3 and 4. This is called the synoptic assessment. The synoptic element of modules 5 and 8 is worth more marks that the actual module content. This means you have to get to grips with the synoptic element in order to do well. This booklet is designed to help you to do so. How much of module 5 and 8 is synoptic.... [tags: Papers]
1704 words (4.9 pages)
- THE RECOVERY RATE OF THE MALE IS SIGNIFICANTLY FASTER THAN THAT OF THE FEMALE. Abstract: 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. Introduction: The male human has always had certain physical advantages over the female human such as increased muscle mass, larger bones, and superb aggressiveness in times where deemed necessary.... [tags: essays research papers]
614 words (1.8 pages)
- Throughout this investigation, I will be conducting a number of experiments to help solve whether or not heart rate is affected by exercise. My aim is to identify the difference of every volunteer’s heart rate and take down how old they are so I can evaluate whether or not the age of a person make a difference in their bpm (beats per minute). Many people know when you exercise for long periods of time; your breathing becomes more shallow and quick. The main human organ system used when exercising is the respiratory system.... [tags: health, fitness, wellness, exercise physiology]
1074 words (3.1 pages)
- What is aging. Everyone can give an answer to this question, which is a process when the body begins to change as time goes by. However, the proximal cause of aging remains one of the unsolved problems in biology. Researchers have found that genetics has a role in aging, which it determined the life span (Larsen, 2001). Aging can occur in many fundamental ways, which can be determined by a program driven by genes or by random, accidental events, or by diseases or stress (Aging Genes, 2008). Firstly, DNA and genes are made of proteins.... [tags: biology, dna, body change]
993 words (2.8 pages)
- Introduction The ancient Greeks believed that the human heart pumped an endless supply of “pneuma”, or life energy. Galen, a Greek physician, believed that the “pneuma” and blood flowed from the heart like a fountain. He believed that there was an endless supply of this precious life source. It was not until 1616 that William Harvey determined that Galen was not entirely correct. Due to the practice of bloodletting during Harvey’s time, his belief that blood is in fact finite was not warmly welcomed.... [tags: Physical Activity, Pulse Rate, Blood Pressure]
1419 words (4.1 pages)
- Cancer is a disease that will most likely affect each and every one of us throughout our lives. There are approximately 560,000 people that die from cancer each year. To put it in perspective, between 1/4 and 1/3 of all Americans will die from this deadly disease. These statistics could be greatly reduced if people would stop smoking. Approximately 35% of all cancer cases are direct results of tobacco use. Many people do not fully understand what cancer really is. Cancer is simply a mutation in the cells which causes them to replicate continuously without bond.... [tags: Biology ]
1565 words (4.5 pages)
- Biology Experiment Hypothesis I predict that the potatoes in the solution with high sugar concentration will increase in mass the most, the potatoes in the water with no sugar will lose the most mass. Osmosis is the movement of water from a high concentration to a low concentration across a particularly permeable membrane. The water can move between the potato and the solution but the sugar can’t because the molecules are too big to pass through the membrane. The water will move between the solution and the potato.... [tags: Papers]
1475 words (4.2 pages)
- Biology Experiment Prediction The temperature I thought the experiment would work best at is 37 c. I think this because your body temperature is 37oC and it is same as cows. Rennin is from a cow and that is what we used. Rennin is an enzyme and it is affected by temperature. Theory The lock and key theoryis simply a way of describing how specific an enzyme is for its substrate. Just like a lock requires a specifically shaped key for it to work so does an enzyme. Each enzyme is a protein which is a polypeptide chain folded into a complex 3 dimensional structure.... [tags: Papers]
954 words (2.7 pages)