Tay Sze En
Lu Ruijie
Li Xiaoxin
Diana
Fadilah
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Weijie | prozac.puppets
Xiaoxin Operationalization: We measure the blood pressure using sphygmomanometer.(manual)
How was the date collection done?
The larger the value of R, the stronger the relationship between variables. In this case, R is less than 0.2 thus very weak relationship.
According to a literature, dynamic activities depend mainly on energy derived from consuming oxygen (aerobic). Thus they increase the body’s need for oxygen. Because blood delivers oxygen to the body, aerobic activity challenges the heart and circulatory system to meet tis increased need. In dynamic exercise, oxygen consumption and heart rate increase in relation to the intensity of the activity.Dynamic (aerobic) exercise involves large muscle groups engaged in rhythmic and repeated movements. Examples of aerobic activities: jogging, brisk walking, swimming, bicycling and jumping rope. As a result, systolic blood pressure rises progressively, while diastolic blood pressure stays the same or decreases slightly. Pulse rate rises, and blood flow to the muscles increases. Thus, aerobic exercise exerts primarily a volume load on the heart.
Research Question:
Is a person's blood pressure before exercise related to his blood pressure after exercise?
Group Members:
Define Variables:
1.Exercise: Independent variable.
2.Blood Pressure: Dependent variable. Scale data.
3.Extraneous Variable: Age, Gender.
It is important to identify variables so that we standardize the duration and amount of exercise (independent variable) for every samples, in order to observe exercise effect, wic is changes of blood pressure (dependent variable)
Conceptualization:
-Exercise:
A physical activity that is planned, structured, and repetitive for the purpose of conditioning any part of the body. It is utilized to improve health, maintain fitness and is important as a means of physical rehabilitation. Dynamic (aerobic) exercise involves large muscle groups engaged in rhythmic and repeated movements. Examples of aerobic activities: jogging, brisk walking, swimming, bicycling and jumping rope.
-Blood pressure:
the pressure of the blood against the inner walls of the blood vessels, varying in different parts of the body during different phases of contraction of the heart and under different conditions of health, exertion, etc. Abbreviation: BP
Hypothesis:
Null Hypothesis : There is no relationship between a person's blood pressure before exercise and after exercise.
Research Hypothesis : There is a relationship between a person's blood pressure before exercise and after exercise.
Weakness: (unsucessful 1st attempt)
- We did not standardize the duration of exercise. Eg. jog for 10 minutes.
- Blood pressure not taken on the spot.
- Position of "sample's hand" is not at the heart level for some.
- Faulty equipment.
Prep. stage:
9th June, Tuesday.
- Collect 30 samples. (classmates and lecture mates)
- Decide on which form of excercise, climbing up and down the stairs, 3 times. They will end up at level 7, to have their blood pressure taken.
- Divide tasks:
- 3 of the group members waited at the 7th level, taking blood pressure after excercise.
- 1 play the role of photography and recording data.
- 2 will take blood pressure.
- 2 of the group members at level 1, taking blood pressure before excercise.
9th June, Tuesday.
- BP (before exercise) takers, took the blood pressure of samples at level one.
- Record their age, gender and their readings.
- BP takers will make sure that samples climb up and down the stairs 3 times.
- BP takers will make sure that 2 samples climbed the stairs at a time. To prevent delay in taking blood pressure.
- BP (after exercise) takers, stand by at level 6, all equipments ready.
- BP takers ensured that they took sample's blood pressure the moment they reach level 6, for accuracy.
-Each "sample" took 5 minutes to climb up and down the stairs.
Raw Data:
SPSS Data:
scatterplot data, pre and post exercise systolic blood pressure:
There is a positive relationship between blood pressure(systolic) before exercise and after exercise.
R= 0.604
N= 30
From the table, there is a strong, positive, and significant association between blood pressure (systolic), taken before and after exercise. (R= 0.604, p<0.05, n=" 30">
Scatterplot data, pre and post exercise diastolic blood pressure:
There is a no relationship between blood pressure (diastolic) before exercise and after exercise.
R= 0.095
N= 30
From the table, there is a very weak relationship between blood pressure (diastolic), taken before and after exercise. (R= 0.095, p<0.05, n=" 30)
Discussion:
Factors that might affect the readings:
- If "sample" took food before the start exercising.
- Different type of BP set used.
- Insufficient samples.
Improvements:
- More samples for accurate results.
- Use the same brands of BP set.
- Set intervals for every sample so that there will be no crushing.
- More manpower to take BP, so there will be no delay.
- Avoid human mistakes. (by using auto BP set)
- No delay.( Blood pressure to be taken on the spot.)
Summary/Conclusions:
In summary, blood pressure (systolic) do change after exercising. The explaination to support this is that when we exercise, the heart and blood system go into overdrive as our muscles are working harder then they need more fuel in the form of oxygen. Oxygen is delivered via the blood system so your heart rate goes up. Because your heart beats faster this puts a greater strain on your blood system. Basically, your blood pressure goes up after exercise.
Reflections:
I find this module of statistic very useful because it plays a great part in a research that help us to measure, record and analyse the data so that we know the relationship or difference between our variables. While doing this project, actual exercise of what we were taught during lecture make me feel that statistic really help by numberizing the raw data and put it into a more readable and analizable form so that we can draw correspond conclusion and decide the direction of research. During the measuring, in order to make sure accuracy i find that we need to identify factors that may affect our data so that we can control and standardize to make sure that the dependent variable is only be affected by independent variable. I hope i can make well use of this skill of statistic in the days to come to find out more, to solve problem.
-Tay Sze En
What I have learned throughout this one challenging semester of studying statistics has proved me useful in conducting meaningful research. Really appreciate having to learn statistics as it will not only end here but will continue to be with me until my working years. Mrs Chia, you had bombarded us a whole lot of statistical infomation that has succssfully been drilled into my storage memory. Things like stating the null and research hypothesis,to reject or accept hypothesis are some of those. Last but not least, we enjoyed sitting throughout your lecture and believing that some day, statistics is indeed a useful skill to have in hand.
-Diana
Firstly, i find this project very interesting as we have to do it on a website and also I found out that this module is challenging but extremely useful. It really helped me to solve a research like this. Statistics has indeed supply, gave me the useful and easy way to calculate an answer through, e.g. graphs. It also give me new computer skills. This project also made me apply theories to what we conclude. Thanks for feeding us with this useful information. It will definitely help us nurses in future.(:
-Fadilah
After doing the project, I realised actually statistics is very interesting. I found the data collecting was important. And we also need to think a lot before our data collecting, especially the factors that will affect our result. We try our best to avoid the factors, such as we measured the BP immediately during our second attempt, but we failed to that during our first attempt. Lastly, successful work needs the cooperation of team members. I think we have done a good job.
- Ruijie
From the statistics in health science, we study the difference of the blood pressure before and after exercise. We used the SPSS to analyse data, find that the systolic pressure is keep almost same, and the diastolic is rise a little bit, but still in the normal range. We also find the reason from biology part. For our life, we need to monitor blood pressure after exercise, especially for the patient is hypertensive and have cardiovascular accident medical history. This is also our aim of our research.
- Xiaoxin
posted @ 1:39 AM |
