Introduction: The heart plays a crucial role in the human circulatory system. The large organ pumps the blood through arteries, veins, and capillaries to distribute oxygen and nutrients to the body. The circulatory system also plays a part in removing our waste products. Humans have double circulation, meaning the blood passes through the heart twice before completing one round; this allows for the blood to be “re-pressurized”. Once the right side of the heart receives blood from the body, it pumps it to the lungs. This is known as the pulmonary circuit. The left side of the heart is dedicated to taking the blood from the lungs and pumping it to the rest of the body. This is the systemic circuit. We are able to measure how fast the heart in contracting by taking arterial pulse. To do this you locate the radial artery running through the forearm. When you press down with the tips of your fingers you are able to feel the pressure passing through that
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By exhaling normally into a spirometer before and after exercise, we were able measured the tidal volume. This allows us to measure if working out changes the amount of air being taken in by the lungs. The dependent variable is the tidal volume, and the independent variable is the amount of jumping jacks being completed by the subject. There were three levels of treatment: 30, 40, and 50 jumping jacks. To start out each trial we measured the subject’s tidal volume. As soon as the jumping jacks were done, the tidal volume was measured with the spirometer. After each set of exercise there was one minute of rest to allow the tidal volume to return to normal. These steps were repeated three times for each level of treatment. Controls included: standing up while taking measurements, starting the spirometer at 2,000 ml, and using the same subject for all
By exhaling normally into a spirometer before and after exercise, we were able measured the tidal volume. This allows us to measure if working out changes the amount of air being taken in by the lungs. The dependent variable is the tidal volume, and the independent variable is the amount of jumping jacks being completed by the subject. There were three levels of treatment: 30, 40, and 50 jumping jacks. To start out each trial we measured the subject’s tidal volume. As soon as the jumping jacks were done, the tidal volume was measured with the spirometer. After each set of exercise there was one minute of rest to allow the tidal volume to return to normal. These steps were repeated three times for each level of treatment. Controls included: standing up while taking measurements, starting the spirometer at 2,000 ml, and using the same subject for all