Observation: The cardiovascular system is responsible for getting the constant supply of oxygen the body needs to the tissues that need it. It also helps removes carbon dioxide, a waste product, from tissues and transports it to the lungs where it's removed when breathes out. Since the cardiovascular system’s roles are vital, people need to take good care of their hearts in order to maintain a healthy lifestyle. The purpose of this investigation is to determine whether teenagers can improve their health, specifically cardio health by means of exercising.
Hypothesis: Exercises improve cardiovascular health in teenagers. Active teenagers have a lower heart rate and blood pressure than those of inactive teenagers
Prediction:
Dependent variables: …show more content…
Males and females have different heart rates and blood pressures. We chose male subjects only to arrive at more accurate results.
4. The subjects groups should be divided, into an active group (subjects who exercise) and an inactive group (subjects who do not exercise).
5. We prepare any materials needed.
6. As there is natural variation within any person and background histories that could affect the result, we will research and investigate subjects’ family histories, calculating Body Mass Index (BMI), drug usage, smoking, alcohol and sugar consumption. These are uncontrolled variables..
7. We determine the time scale and frequency of sampling. We will measure subjects’ heart rates and blood pressures every Monday, Wednesday and Friday morning, exactly at 9:30 am. This measurement is carried out for 2 weeks.
8. Performing the experiment (testing the hypothesis) using any equipment, devices or resources needed.
9. We may repeat the experiment twice so the average change could be calculated. Any chance differences between individuals would then be unlikely to affect the result. 11. The raw data from the results should be gathered, and analysed, by statistical means. This allows us to establish if there is any relationship between the variables and accept, or reject, the …show more content…
After data analysis is completed, we will write a report. We will represent data by tables or graphs such as line graph, bar or column graphs. Then we will draw conclusions, which is summary of our findings and comments on the validity of the outcome of the investigation. A bibliography or references is included.
Materials
1. A stethoscope
2. A sphygmomanometer.
3. Manual inflation blood pressure monitor
4. A journal
5. A countdown timer
Procedures:
1. Measure participants’ blood pressure twice a day
2. Create tables in a journal
3. Write down the measurements(raw data) in the tables
4. Cross check if there are significant differences between measurements and repeat it if necessary
5. Repeat step 1 to 4 on the following measurements
Data analysis:
1. Evaluate the differences in the heart rates and blood pressures between inactive teenagers and active teenagers from the data collected.
2. The average heart rates and blood pressures of the inactive group and active group will be calculated.
3. A heart rate vs. time graph and a blood pressure vs. time graph will be graphed based on the average values obtained.
4. Finally, an average heart rate and average blood pressure will be calculated from the graphs for each group to represent a heart rate and blood pressure values of an inactive teenager and an active teenager.
Hypothesis: Exercises improve cardiovascular health in teenagers. Active teenagers have a lower heart rate and blood pressure than those of inactive teenagers
Prediction:
Dependent variables: …show more content…
Males and females have different heart rates and blood pressures. We chose male subjects only to arrive at more accurate results.
4. The subjects groups should be divided, into an active group (subjects who exercise) and an inactive group (subjects who do not exercise).
5. We prepare any materials needed.
6. As there is natural variation within any person and background histories that could affect the result, we will research and investigate subjects’ family histories, calculating Body Mass Index (BMI), drug usage, smoking, alcohol and sugar consumption. These are uncontrolled variables..
7. We determine the time scale and frequency of sampling. We will measure subjects’ heart rates and blood pressures every Monday, Wednesday and Friday morning, exactly at 9:30 am. This measurement is carried out for 2 weeks.
8. Performing the experiment (testing the hypothesis) using any equipment, devices or resources needed.
9. We may repeat the experiment twice so the average change could be calculated. Any chance differences between individuals would then be unlikely to affect the result. 11. The raw data from the results should be gathered, and analysed, by statistical means. This allows us to establish if there is any relationship between the variables and accept, or reject, the …show more content…
After data analysis is completed, we will write a report. We will represent data by tables or graphs such as line graph, bar or column graphs. Then we will draw conclusions, which is summary of our findings and comments on the validity of the outcome of the investigation. A bibliography or references is included.
Materials
1. A stethoscope
2. A sphygmomanometer.
3. Manual inflation blood pressure monitor
4. A journal
5. A countdown timer
Procedures:
1. Measure participants’ blood pressure twice a day
2. Create tables in a journal
3. Write down the measurements(raw data) in the tables
4. Cross check if there are significant differences between measurements and repeat it if necessary
5. Repeat step 1 to 4 on the following measurements
Data analysis:
1. Evaluate the differences in the heart rates and blood pressures between inactive teenagers and active teenagers from the data collected.
2. The average heart rates and blood pressures of the inactive group and active group will be calculated.
3. A heart rate vs. time graph and a blood pressure vs. time graph will be graphed based on the average values obtained.
4. Finally, an average heart rate and average blood pressure will be calculated from the graphs for each group to represent a heart rate and blood pressure values of an inactive teenager and an active teenager.