Many physiological changes occur during exercise. Design a controlled experiment to test the hypothesis that an exercise session causes short-term increases in heart rat and breathing rate in humans. Explain how at least three organ systems are affected by this increased physical activity and discuss interactions among these systems.

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Many physiological changes occur during exercise. Design a controlled experiment to test the hypothesis that an exercise session causes short-term increases in heart rat and breathing rate in humans.  Explain how at least three organ systems are affected by this increased physical activity and discuss interactions among these systems.


A) Two groups made up of 100 people, all of about the same body size, and age. Each is monitored for heart rate, and respiration rate during the test. You have the test group run for 30 minutes, and have the control group simply stand for 30 minutes.
After the test is done, compare the test and the control group creating graphs of both.

B) Circulatory- The body increases blood flow to carry oxygen and nutrients to the working muscle cells, and to carry excess CO2 out of the body.

Respiratory- The body increases the rate of respiration to expel the extra CO2 gas that is being produced by the working muscle cells while they are preforming cellular respiration to create ATP.

Digestive- The body increases the rate of digestion in the body to break down the carbohydrates into glucose to put it through cellular respiration to continue the extra production of ATP in the body.

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