Calculators | Texas Instruments - Science | The Effect of Exercise on Our Body

The Effect of Exercise on Our Body

By David Proctor,

Katanning SHS

If you use or quote from the following programs, please acknowledge the author above.

Your Task

To design an experiment to examine the effects of exercise on our body. You need to base your experiment on measurements that you can make. When you have completed your experiment you are to present your findings in poster format.

• Considerations
• Instructions For Using the CBL and TI-83
  • Heart Rate Monitor
  • Temperature Probe

Considerations

1. Measuring devices that we have available: stethoscope, stop watch, bathroom scales, heart rate monitor, clinical thermometer, CBL with temperature probe and heart rate monitor, rulers, tape measures.
   Which of these devices will you need? Will they give you useful measurements? Do you need help on how to correctly use any of these devices?
2. What measurements will you make? How can you make these measurements as accurate and reliable as possible? For how long after the exercise period will you make measurements?
3. Which variables are you going to:
   • Change?
   • Measure?
   • Keep the same?
4. What factors might lead to errors in your experiment? How can you try to reduce the effect of these factors?
5. How are you going to present your information?

Heart Rate Monitor

1. Connect the heart rate monitor to channel 1 on the CBL.
2. Use a link cable to connect the CBL to a TI-83 and turn both devices on.
3. Push   PRGM &nbp; and then select   CHEMBIO   on the calculator. The heart rate probe is on the second screen when the probe types are listed. Follow the on screen instructions for the measuring the heart rate. Select   1: Collect Data when ready.
4. The heart rate monitor requires some practise before using it to make experimental measurements. It needs to be connected to a body part that is thin and has blood flowing through it. The ear lobe is recommended. If this does not produce satisfactory results, try using it on the webbing between your thumb and index finger - the clamp needs to held firmly closed.
5. How will you use the results displayed on the calculator screen? The calculator can be linked to computer (using Graph Link) to print the calculator screen.

Temperature Probe

• Unlike the heart rate monitor the temperature probe and CBL can be used without connecting to the TI-83. Place the probe in Channel 1, turn the CBL on and push MODE to have it measure temperature.
• If you want to use the calculator to record the temperature over a period of time then connect the temperature probe as per the instructions for the heart rate monitor.
• When the data collection screen appears there are 4 choices - try using each one to learn what advantages there might be in using each selection. When you choose time graph you need to know how often you want the temperature taken and for how long. As the calculator will graph your results you will also need to instruct the calculator as to the temperature range it will be measuring so that it can use an appropriate scale on the Y axis.