AIM:
To investigate the influence of exercise on the heart rate of a person.
HOW IT WORKS:
Time Allocation: 45 Min
As test subjects experienced an increase of activity, the test subject requires increased oxygen for their muscles. To compensate for this increase of oxygen required, the blood pressure as well as the heart rate will increase. As the person exercises their skeletal muscles increase in activity and those require more blood carrying oxygen to the muscles and more blood taking away unhealthy metabolites to the lungs and kidneys.
The Heart responds to lowered pH and other stimulus and the rate at which it pumps begins to increase the rate at which it pumps blood to compensate for the muscles needs.
APPARATUS:
- Stethoscope
- Stopwatch
METHOD:
- Working in pairs, measure both persons’ heart rates and record it in the table at rest position.
- The first person (Person A) runs on the same place for 30 seconds, lift knees up high when running.
- When finished running, person B takes person A’s pulse and record it in the table.
- Person B runs on the same place for 30 seconds.
- When finished running, Person A takes person B’s pulse and record it in the table.
- Person A runs on the same place for 60s and person B measure and records his/her pulse rate after he/she finished running.
- Repeat step 6 but with person B doing the running and person A doing the measuring and recording.
- Person A runs 90s on the same spot and person B measures his/her pulse and record it.
- Repeat step 9 but with person B doing the running and person A doing the measuring and recording
PRECAUTIONS
Participants are advised to not engage in the exercise if they suffer from any heart related issue or respiratory problems that are not controlled.
Tip: How to measure a person’s pulse rate:
Place your index and middle finger on the inside of the wrist. Count the number of beats you feel for a minute.
This is the pulse rate, measured in beats per minute.
You should record your observations in a similar table:
