MY BLOG.

Introduction

We are from Nanyang Polytechnic School of Health Science Nursing, Group 0708, Subgroup1 presenting to you our Statistics project.
Introducing our group members:

Jamie
Huimei
Felicia
Maithillzy

Mohd Kailani
Norlela
Kailani
Khadijah

Our selected question: Is a person’s blood pressure before exercise related to his/her blood pressure after exercise?

Independent: Exercise
Dependent: Blood Pressure

Extranous variables are:
Height
Weight
BMI

*The reason we added height and weight to calculate the body mass index because we feel that the BMI of a person affects the amount of energy exerted to complete the exercise therefore affecting the blood pressure.

Definition of variables:
Exercise- Is any bodily activity that enhances or maintains physical fitness and overall health.
It includes strengthening muscles and the cardiovascular system, honing athletic skills or weight loss.

Blood pressure- refers to the force exerted by circulating blood on the walls of blood vessles, and constitutes one of the principal vital signs.

Research Hypothesis: There is a significant relationship between a person's blood pressure before and after exercise.

Null Hypothesis: There is no significant relationship between a person's blood pressure before and after exersise.

11:28 PM

METHODOLOGY

Our group members decided to use the help of our school mates to help assist us in this research. So we assigned jobs to all individuals so all the work can be equally shared among us.

- 1 person to be in charge of the camera
- 3 to be helping out in the measuring of subjects
- The rest to be helping out in the data collection

How we chose our subjects:

By using convinence sampling

So we gathered 30 sample subjects by going around and asking people. First of all we ask of their approval before explaining what our research is about. Followed by, measuring their height, weight, BMI, blood pressure as a baseline before the subjects were to start their exercise.

We measured all the measurements with the same measuring equipments so as to have consistent readings throughout.

The types of instruments we use to measure are:

- an electonic Blood pressure machine to measure the before and after Blood pressure.

-a weighing scale to measure weight

- a measuring tape on a flat wall to measure the height of the subjects

So we start of by measuring the Weight because BMI is one of the extraneous variable.

When measuring the subjects' weight, we ensure that all the subjects have their hands on their side and that they look straight ahead while we read out their weight on the weighing scale, in order to obtain an accurate measurement. Not forgetting, taking their footwears off before they stand on the scale.

Followed by their Blood Pressure. We ensure that they have been resting (sitting down quietly) for 5 mins before we take their bp measurement, to ensure that they have not been exerting any force or eliminate any form of anxiety, so as to obtain a baseline measurement.

We also include that we only measure their Blood pressure at the left arm so to have consistent readings.

Followed by their Height

Subsequently, our 30 subjects sample were to run up the stairs from level 2 to 6, a total of 8 flight of stairs and we make sure they complete it in 3 mins or less to ensure that they put in the same amount of effort in completing the exercise. We will then record the subjects Blood Pressure immediately so to make the readings more accurate.

We measured the Blood pressure only on the left arm, sitting on the chair and level to the heart so as to have accurate readings for all the 30 subjects. This is to also to maintain consistency in the date we collected.

After all the sample collection, we thanked the people that helped us in this research.

With that, we recorded everything in the SPSS file and used....

We measured everything only once and we did not have any rejections or missing values.

8:26 PM

Literature review

Our literature Review: Different kinds of activity affect blood pressure differently.Although blood pressure goes up during any kind of exercise, the changes brought on by exercise vary according to whether the exercise is static or dynamic.

Dynamic (aerobic) exercise involves large muscle groups engaged in rhythmic, repeated movements. Examples of aerobic activities include jogging, brisk walking, swimming, bicycling and jumping rope. Static (isometric) exercise is defined as a sustained contraction of a muscle group and is typified by weight lifting.

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 this increased need. In dynamic exercise, oxygen consumption and heart rate increase in relation to the intensity of the activity.

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. Click this website to read more: http://www.americanheart.org/print_presenter.jhtml;jsessionid=RXJRUC30WQP0ECQFCXQCDSQ?identifier=3034814

Second literature Review:

http://www.colorado.edu/eeb/courses/1230jbasey/abstracts%202007/34.htm