Introduction
Hello wello! Let's get started by introducing the team!
Our group comprises of...
Kat
Mary
Sun
And last but not least, Syahira.
We would like to give a warm welcome to all who took the time to read this blog. The following pictures are small, but don't worry, just click on them and they'll revert back to their actual size. =)
Wednesday, July 15, 2009'♥
blogged @ 12:00 AM
Objectives!
Our objectives for this project are:
- To find if there is a relationship between the blood pressure before and after exercise
- To conceptualize the variables used in the experiments
- To choose the correct instruments to use in the experiments
- To choose the correct tests for realiability
- To analyse the data and prove the hypothesis
Tuesday, July 14, 2009'♥
blogged @ 12:00 PM
Variables
Independent variable: Exercise
Dependent variable: Blood pressure
Extraneous variables: Gender and age
Conceptualization
Exercise is defined as running 3 laps outside LTK 1 and 2.
Blood pressure is defined as the pressure of blood measured in mmHg.
Operationalization
Exercise is measured under supervision of the researchers.
Blood pressure is measured using manual blood pressure set in mmHg.
Monday, July 13, 2009'♥
blogged @ 12:00 AM
Research question
Research question: Is a person’s blood pressure before exercise related to his blood pressure after exercise?
Why we choose this topic: After reading the literature, we found that after exercise there is a significant increase in systolic but not diastolic pressure. So we want to find out if that is true.
Sunday, July 12, 2009'♥
blogged @ 12:00 AM
Hypothesis
Hypothesis: There is a relationship between the blood pressure before and after exercise
Null hypothesis: There is no relationship between the blood pressure before and after exercise
Saturday, July 11, 2009'♥
blogged @ 12:00 AM
Ethics & confidenciality
Informed consent: We identified ourselves, explained to the subjects of the purpose and procedure of the experiment. After that, we obtained their consents to conduct the experiment
Confidentiality: We ensured the participants that the data collected for the experiment would be kept amoung the researchers.
Friday, July 10, 2009'♥
blogged @ 12:00 AM
Literature
Relationship between blood pressure before and after exercising...-There is a relationship between diastolic blood pressure and exercise. While exercising,
diastolic blood pressure decreases, yet other times it increases.-Two types of blood pressure, systolic and diastolic.- Systolic blood pressure is the maximum blood pressure in the system as the heart contracts.
-Diastolic pressure is the minimum blood pressure while the heart rests and fills with blood, prior to the next heart contraction.-Change in blood pressure occurs with exercise. -Diastolic pressure should not vary by more than 5 to 10 mm of mercury because this represents pressure in the system when the heart is not contracting. -A significant elevation in diastolic blood pressure during exercise could be an indication of a serious health issue or malfunction within the cardiovascular system.
-The heart rate will, typically, increase during exercise, depending on intensity levels. -This is necessary for increased blood flow to the working muscles, thus allowing for increased respiration, which results in the muscles working efficiently. -During exercises such as running, cycling, and swimming, systolic blood pressure progressively elevates while diastolic blood pressure is only slightly elevated.- The more strenuous the exercise, the more elevated your heart rate will be. -It is important to understand that the effects of exercise on blood pressure will vary, depending on each person and his or her age, gender, exercise level, exercise intensity as well as other pertinent factors. Taken from: http://www.brighthub.com/health/fitness/articles/41153.aspx
Thursday, July 9, 2009'♥
blogged @ 11:46 PM
Sampling
We used the accidental sampling and collected 30 samples altogther. (11 males and 19 females)
Why did we use accidental sampling?
Because its convenient. Our experiment doesn't have any criteria except that the student has to be physically fit.
How did we obtain the samples?
We were situated outside LTK 1 and 2. We chose that place as it was a place where most people would pass by, either to get to north canteen, Blk F, or the opposite way to Macdonalds' and Koufu. Also, there would be people coming out from the lecture halls after lectures.
So first we picked a person, and explain the purpose and procedures to he/she. If we had the consent of the person, we proceeded with the experiment. Further explaination will be done later on.
Methodology
We did our experiment outside LTK 1 and 2.
For the first attempt:
Syahira took charge in recording down the data
Kat explained the procedures to the participants and supervised the exercise
Sun did the measuring of blood pressure
And I (Mary) was in charge of taking photos
For the second attempt:
Syahira and Kat stuck to the same roles
Syahira took over my role as photographer
While I took her role to take the participants' BP
For this experiment, we did 2 attempts. Participants are to take their BP, after that to run 3 laps outside the LTK and come back quickly to measure their BP again. After resting for about 10-15mins, we repeated the same procedure for the same person again. In order to decrease the errors of the results of the experiment, we standardize some factors that may affect the readings.
Factors to standadize the experiments:
- For every participant, we must make sure that the person is physically fit
- Sun must be the only one measuring the BP, in order to prevent any errors in the readings as different people may have different readings from each other
- Sun must make sure to take the reading of the BP at the same arm before and after every exercise for each participant
- Kat must supervise the participant running, make sure that he/she runs the distance required of them
- Syahira must confirm the reading with Sun before recording it down.
Wednesday, July 8, 2009'♥
blogged @ 12:00 AM
Instruments used for the test
1st attempt data
2nd attempt data
The camera used
The BP set that was used
Tuesday, July 7, 2009'♥
blogged @ 10:43 PM
Pictures! and video
Where we held the test at and the place where participants ran
Since the exercise looked fun, we thought we should just give it a little try too... =)
Realiabilty
We decided to use the test-retest method to test for the realiability.
Why did we use this test? This is to prevent any errors in the result of the experiment. If we obtained similar results for the 2nd attempt as the 1st, that means the instrument is realiable.
Overview of our data
(Overview)
Data View
19 Females, 11 Males
Legend:
1:Male
2: Female
Variable view
19 Females, 11 MalesLegend:
1:Male
2: Female
Gender of the participants
Norminal data = pie chart
Age of the participants
There is a skewness, we use median =19
General age of the participants
Age of the participants
in general
First attempt
before exercise
after exercise
Systolic
(before exercise versus after exercise)
Diastolic
(before exercise versus after exercise)
Scatter/ Dots- Simple scatter
Systolic
(before exercise versus after exercise)
Scatter/ Dots- Simple scatter
Diastolic
(before exercise versus after exercise)
Crosstab
We use: Pearson R (scale data)
Systolic
There is a positive, moderate and significant association between a person’s systolic blood pressure before exercise and his systolic blood pressure after exercise during the 1st attempt
Crosstab
We use: Pearson R (scale data)
Diastolic
There is a positive, moderate and significant association between a person’s diastolic blood pressure before exercise and his diastolic blood pressure after exercise during the 1st attempt
Mary
Sun
And last but not least, Syahira.
1st attempt data
2nd attempt data
The camera used
The BP set that was used
Kat
Sun
Mary
1st attempt
2nd attempt
Here's a video, whereby we show the distance the participants had to run. And our model is Syahira! =D 
