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To investigate the effects of exercise on pulse rate
Heart rate experiment hypothesis
Exercise heart rate investigation
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Recommended: To investigate the effects of exercise on pulse rate
Analysis As seen in the processed data table, as the intensity of the exercise increases, so does the participant’s heart rate. The graph also supports this by demonstrating that the two variables have a close positive and linear relationship. The data points are close to the trendline which has a positive gradient of 0.3839. The r2 value of 0.9791 is very close to 1, meaning that it has a strong positive relationship. The value also shows that the two variables have a positive correlation in which one variable increases as the other also increases, which supports the other data collected. Furthermore, the error bars on the graph displays the standard deviation of the data points. At an intensity of 140 metronome bpm, the standard deviation …show more content…
The hypothesis stated that as the intensity increases, then the heart rate will also increase. This is supported by the data collected. The graph shows that intensity and heart rate have a positive correlation which means that they will both increase at the same time in a linear fashion, validating the hypothesis. The r2 value of 0.9791 is also very close to 1 and the data points are near the trendline, meaning that the variables have a strong positive relationship. However, the error bars and standard deviation also demonstrates something that the hypothesis did not predict. The fact that the standard deviations of the lowest and highest intensity were lower compared to the other intensities in between suggest that there was less of a room for the heart rate to vary by increasing and decreasing. The lowest intensity did not result in a significant increase in heart rate, and as the heart rate after exercise cannot be lower than the resting heart rate, the spread of the data collected at the intensity of 100 metronome bpm is less. The standard deviation increases as the intensity increases due to the gap in exercise heart rate and resting heart rate. However, after the highest standard deviation (12.86) was reached at the intensity of 140 metronome bpm, the spread started to decrease. Eventually, at the …show more content…
The heart is a part of the circulatory system, which is responsible for pumping blood all around the body to facilitate gas exchange and transport oxygen and important nutrients to the body’s cells (QASMT, 2018). Every pump of the heart can be felt as a pulse in certain parts of the body. However many times the heart pumps in a minute results in the heart rate of an individual, measured in beats per minute (bpm). All cells need energy to function, and the way they produce energy is through cellular respiration. In this chemical reaction, glucose and oxygen are used as reactants to produce water, carbon dioxide, and most importantly, energy. This process is shown by the chemical equation of C6H12O6 (glucose) + O2 (oxygen) CO2 (carbon dioxide) + H2O (water) + C10H16N8O13P3 (energy) (Kids.Net.Au, 2018). Exercise uses up the body’s energy at a faster rate than normal, meaning that cellular respiration will have to occur at a higher rate to produce enough energy to maintain the body’s homeostasis (Khan Academy, 2018). Hence, oxygen is also used at a higher rate and more carbon dioxide is also produced as a waste product. Too little oxygen and too much carbon dioxide is poisonous to cells, therefore more oxygen must be brought in while carbon dioxide is taken out. This is where the heart comes in. In order for the blood to circulate oxygenated blood from the lungs to the cells and transport carbon dioxide
Blood flow to the muscles has been shown to increase with exercise (Lombardo, Rose, Taeschler, Tuluy, Bing, 1953). In this experiment, “blood flow” can be roughly measured as “Mean Arterial Pressure”. Mean Arterial Pressure is defined as the average blood pressure in the arteries throughout the entire cardiac cycle. This can be measured by multiplying “Cardiac Output” by “Total Peripheral Resistance”. Cardiac Output in essence is the volume of blood pumped by the heart in one minute, which can be written as the “Stroke volume (milliliters of blood per beat)” multiplied by “Heart rate (heart beats per minute). “Total Peripheral Resistance” can be defined
In addition, each of the test subjects had high resting heart rate. On average, resting heart rate should be approximately
Investigation: I will be measuring peak flow and breathing rate at rest and 30 seconds after exercise to see how my heart rate and breathing rate changes.
This experiment made use of a single male subject who was 20 years old, with a height of 190.5 cm and weight of 104 kg. The study consisted of obtaining heart rates after the following conditions 1) after one minute in the supine position, 2) immediately after moving to a sitting position, 3) one minute after moving into a sitting position, 4) immediately after moving to a standing position, 3) one m...
The two major things that will help an athlete while measuring the cardiovascular drift are progression and hydration levels. The heart rate of an athlete working hard during a workout should be no more than their maximum heart rate which is found by, if you’re a female take 226-age, if you’re a male take 220-age. If while doing a workout the maximum heart rate is exceeded by too much it may be necessary to take a break or slow down greatly. This may also help with traking the hydration of an athlete. If an athlete stays hydrated their core temperature will stay regulated which means they won’t sweat as much, which also means the heart won’t be under as much stress while transporting the oxygenated blood throughout the body to the
The heart rate will be lowest when the subject is relaxed because the heart will have enough blood to pump in less beats per minute. When the subject sits up, it will increase its heart rate. However, the heart rate will be at its highest after the subject had exercised due to the body trying to satisfy itself by sending more oxygenated blood to where it is needed most.
The data recorded supports the hypothesis, as during the trials the heart rate, breathing rate increases from resting body results as well as that the body temperature remained at an constant temperature. Many changes occurred in heart rate, breathing rate and body temperature. As seen in graph 1 the heart rate was very unstable throughout the trials. This is due to homeostasis. The heart rate rapidly increases in all the trials, but then slowly decreases after the 5-minute resting period. The heart rate increases while doing exercise, as the heart speeds up the oxygen to the muscles. As seen in graph 2 the breathing rate increase while doing exercise, but then later decreases to maintain a stable breathing rate. The breathing rate in this
But there were many unsure points and errors which could have thrown the results off. The average resting rate (BPM) from Group A was 85.4 and Group B’s was 73.6. The stair climbing rate was 126.8(A) and 111.6(B) However, some contestants had unusual results, such as Britney from Group A ,whose BPM seemed unusually higher than others (114,146) and Sydney, (A) started with a very low bpm (62) which was the lowest out of all group members. Two other outliers from Group B (Kate and Ryan) started with higher resting rates by at least 10 beats more than other members from B which made the results look less and less reassuring. These standout data points made us question how accurate our hypothesis had been. This data may have had it’s rising trends for other reasons as well. From background information we later learned after conducting the experiment ,that caffeine won’t take immediate effect until 15
This test was performed on a 22-year-old trained male. This subject will be referred to as subject two for the remainder of this report. Subject two’s height was measured using a stadiometer and his weight was measured using a tenita scale. His height was reported to be 188 cm and his weight was reported to be 105.7 kg. Subject two was then placed on the cycle ergometer and the seat height was adjusted. His knee flexion was measured using a goniometer and was 15° flexed. The subject’s resting heart rate was measured and found to be 76 bpm and his resting blood pressure was measured and found to be 115/70 mmHg. Subject two was instructed to begin a 4-minute warm-up, pedaling at approximately 50 rpm with no resistance. Following the warm-up, the exercise phase began. Based on the training level reported by subject two, resistance was set using the YMCA Test Guidelines for Setting Workloads on the Cycle Ergometer for the duration of the test. The first workload was set at 1 kilopond. A different technician, reported heart rate on subject two than who reported heart rate on subject one in the Astrand-Rhyming test. This technician was instructed to report heart rate during the last 30 seconds of the second and third minute by a separate technician. The heart rate was then multiplied by 2 to result in an overall heart rate of beats per minute. A different technician reported blood pressure on subject two than who
As noted in question two on page four, the air temperature made a relatively significant impact on the subject’s readings when comparing attempt one and two. The 1.5°C temperature increase during attempt two increased the subject’s initial skin temperature by 2.3°C and their core temperature by 1.5°C. This had a flow on effect, causing the subject to have an elevated heart rate during the first four minutes of exercise. This increase in bpm was most likely due to increased stress placed on the subject’s cardiovascular system to replace electrolytes lost to sweat via the bloodstream.
The female subject’s average power was 106 kg-m/sec. The average power output male were classified as good and female subjects were classified as average according to the Magaria- Kalamen classification chart. The mean power output for the male subjects was higher than the female subjects. Males have more Type II or fast twitch fibers, which are better for fast and powerful movements like the power test or any quick pace activity. Females tend to have more Type I or slow twitch fibers which are better for endurance exercises, such as running or biking. The first time running up the stairs was the slowest time for most of the subjects. This was probably because the subjects’ had to adapt to the task. The second trial was the fastest because the subjects’ were familiar with the task. The third trial for most of the subjects was slower than the second trial but faster than the first trial, most likely due to being tired. An error that could have occurred was the reaction time of the timer. The timer started timing when they saw the subject’s foot hit the first step. However, the time was not as accurate as possible because there is a delayed response before the timer hits the start button and the foot touching the step at a fast speed. Another error was that the stairs were not the standard set for the test. The vertical distance of the stairs is supposed to be 1.8 meters, but
2008). In other words, there is an interaction between caffeine intake and muscle mass that determines pulse rate and in this experiment, muscle mass was a variable that was not accounted for. Furthermore, the resting pulse rate response to caffeine consumption prior to exercise is considered one of the most variable parameters of those in the study. Because this experiment measured resting pulse rate less than one hour before exercise, it is not completely reliable as a study by Bailey (1989) similarly suggested the implications of pulse rate variability to be a factor of the fluctuating results across subjects despite
The physiological response of heart rate is further required because when resting only 20% of blood is received in each heartbeat. Once exercise starts 80% is received to the muscles being used, thus enhancing the exercise endurance (Rowell 1986). Heart rate is also concomitant with respiration and VO2 Max. This is because heart rate is important in meeting the needs of the volume of oxygen required (cdc.gov, N/A). They both are continually increasing till a maximum and plateau is reached. This will need to be enhanced during the training session because of the importance of oxygen in recovering the ATP-PC quickly in touch. If improved enough by the training session the heart will be able to continually increase up to maximal rates of work (Scruggs et al. 1991; Gledhill, Cox, Jamnik
The acute response of the heart to exercise increases at the beginning of exercises. This can be changed by chemicals named adrenaline and noradrenaline, what are known as neurotransmitters that are found in the brain and released during the exercises. They let an impulse from one nerve cell to pass to a different nerve cell; these chemicals prepare the heart for exercise, therefore, there is a growth in beats per minute as we can see from the figures showed below. Soon as the heart rate starts to increase our body starts to stock oxygen and nutrients for our working muscles.
One other main factor affecting resting heart rate is being in state of recovery. After exercise, particularly after a bike ride or a long run, multiple things happen in the body. Fuel sources are diminished, muscles are squandered, and temperatures are likely to increase. All of these factors must be addressed and fixed. The body tends to work harder, and this heightened work results in a higher heart rate. Although the person might feel okay at rest, the body is working harder to repair itself even when you’re not moving your body at all(MSU 1998). This will be very noticeable when you elevate your heart rate again. Monitoring your exercise heart rate and your rest heart rate will allow you to make appropriate modifications such as eating