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Figure 1

Introduction During exercise, your muscles need more energy. They produce this energy by burning glucose or fat, which produces heat. Yet, the core body temperature remains almost unchanged. The body balances the amount of heat by losing heat to the environment. More than 80% of this heat is lost through the skin’s surface. Blood vessels near the surface of the skin dissipate heat. Therefore, heat loss is effectively achieved by an increase in blood flow in the skin. In this experiment we measure the effect of exercise on body temperature and heart rate.

Equipment einstein™Tablet with MiLAB or Android /IOS Tablet with MiLAB and einstein™LabMate Temperature Surface Sensor (-40°C to 140°C) Heart Rate (Exercise) Sensor with transmitter belt Saline solution


| Effect of Exercise on Human Body: Temperature and Heart Rate |

Equipment Setup 1.

Launch MiLAB (

2.

Connect the Surface Temperature Sensor and the Heart Rate Sensor to ports of the einstein™ Tablet or einstein™ LabMate. In the Current Setup Summary window choose Full Setup and use the table below to set up the experiment. Make sure that only the Temperature Sensor and Heart Rate Sensor are selected under Measurements.

3.

).

Current Setup Summary Program the sensors to log data according to the following setup: Surface temperature (-40°C to 140°C) Rate:

25 samples per second

Duration:

200 sec

Heart Rate (0 – 240 bpm) Rate:

25 samples per second

Duration:

200 sec

Procedure 1. 2.

4.

Attach one plastic end of the elastic strap securely to the transmitter belt. Wet the two electrode strips with a zigzag pattern of 4 drops of saline solution on the back side of the belt. Place the transmitter belt over the base of the rib cage. The belt should be directly on your skin. Be sure the belt is in the right place by checking that the POLAR logo of the belt is centered. Pull the elastic strap to make sure it is fitted tightly (see Figure 1). Hold the Temperature Sensor under your left ear lobe (without pressing).

5.

Tap Run (

6. 7. 8.

Follow changes in temperature and heart rate until they stabilize (at about two minutes). Run in place for about two minutes. Follow changes in temperature and heart rate for an additional one to two minutes after completing the exercise.

9.

Save your data by tapping Save (

3.

) to begin recording data.

).

Questions 1.

2. 3.

What is the effect of the exercise you performed on: a. The temperature measured at your ear lobe? b. Your heart rate? What causes the changes in temperature and heart rate? After exercising, what changes in temperature and heart rate did you observe? Did both parameters

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| Effect of Exercise on Human Body: Temperature and Heart Rate |

4.

return to the level registered before the exercise? Explain your observations. What can you conclude from this experiment regarding: a. Changes in body temperature following muscular activity? b. Changes in heart rate following muscular activity? c. The connection between the two parameters?

Further Suggestions 1. 2. 3.

Compare temperature changes in both ear lobes at the same time. Perform different types of exercise and measure their effect on heart rate and temperature measured at your ear lobes. Compare your data with those of your classmates.

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| Effect of Exercise on Human Body: Temperature and Heart Rate |

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Profile for Fourier Education

Effect of Exercise on the Human Body  

Effect of Exercise on the Human Body  

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