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Ib Biology Respiration Lab Paper

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Design Lab: Respiration

The Effect of Heavy-Duty Exercise on the respiration of Homo Sapiens (Humans)

Research Question: What is the effect of heavy-duty exercise (cardiovascular and other activities) on the respiration of humans?

Background Information: In this experiment, trials will be conducted consisting of humans run up a set of stairs up and down 3 times as fast as they possibly can in order to put pressure on oxygen need to increase respiration needs. This will test the effect of a set exercise on the respiratory needs of a human.

After this, they will have to do a set of 10 push-ups and 15 jumping jacks. If 10 push-ups are not possible, a substitute of 15 curl-ups should be administered instead.

Hypothesis: When exercise is complete, the respiratory needs of one human should be significantly higher than it was previous to the exercise.

Independent Variable: Human fitness level, exercise set
Dependent Variable: How fast the human goes
Controlled Variable: Temperature, time for exercise, amount of oxygen in air

Materials: * Piece of paper for general observations as well as data recording * 4-6 humans * Timer (ipod, clock, something) * Water (if needed for human)
Procedure:
1. Use the stairs next to the Biology classroom, select one human to go first and rotate turns until all humans have gone or until necessary data is gathered 2. Record the rate of exhales of the human (normal breathing) for 30 seconds and any other general observations 3. Have the human do the following: a. 3 sets of running up and down the stairs (going down and up constitutes as 1 set for a total of 6 ups and downs) as fast as they possibly can b. 10 push-ups OR 15 curl-ups c. 15 jumping jacks 4. Afterwards, record the rate of exhale of the human (after exercise) for 30 seconds and any other general observations 5. Look over data to see any patterns or items that should be noted. Compare the increase (if any) in the rate of respiration (in exhale units) before and after exercise. 6. Repeat trial(s) if necessary

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