Exercise causes numerous physiological changes in the body. Body temperature increases during exercise because heat is generated in proportion to our need to produce energy. Sweat is a by product of the body heat generated and is sent to the surface of the skin to evaporate and serves as a cooling mechanism. Aerobic exercise leads to the regeneration of ATP which causes an increased need for oxygen and an increased production of carbon dioxide. These two gases must be delivered and removed for the muscles to function properly. Oxygen is brought into the lungs of the body via inhalation and transferred from the pulmonary circuit to the heart via hemoglobin. The oxygenated blood passes through the heart and out into the body's organs. Some hemoglobin red blood cells deliver the oxygenated blood to skeletal muscle being contracted during exercise. The muscle uses the oxygen to regenerate ATP aerobically. This process also produces carbon dioxide as a waste product. The carbon dioxide diffuses into capillary blood and travels back up through the heart and into the pulmonary circuit where it is taken to the lungs and disposed of by exhalation.
[...] Regardless of the unnaturally high heart rates to begin, all three increased throughout the bout and experienced the highest rate at the end of the exercise, whether it was after nine or twelve minutes depending on the length of exercise for each subject. Once the subjects entered the recovery phase their heart rates began to drop and return to normal. These results strongly supported my hypothesis. Heart rate is the measure of beats per minute and is reflective of the amount of stress put on the system and thus a rise in heart rate is always observed while exercising and the more strenuous an exercise gets (i.e. [...]
[...] The exercise data points were collected while the subject's were in motion, forty-five seconds prior to the incline increase. Two of the subjects ran for twelve minutes and one ran for nine minutes. The subjects were allowed to stop exercising at any point during the experiment. An exercise heart rate for each subject was calculated prior to the experiment in order to maintain a controlled experiment. The calculated heart rate prevented the subjects from exceeding 80% of their maximum heart rate. [...]
[...] The values should have increased consistantly as the exercise became more strenuous. The only time an increase would no longer be noticed is when it plateued at the individuals VO2 max. The data collected was weak support of my hypothesis and next time to eliviate this error I would more closely monitor the subject as he or she is breathing into the tube to make sure they are doing it correctly and breathing normally. Temperature fluctuated between thirty-six and thirty-seven or thirty-eight degrees celcius for all three of the subjects. [...]
[...] Measurements were taken again directly following the exercise as well as three and six minutes into recovery. Figure 4. Body Temperature Point Body temperature was very consistent between the subjects and did not experience much variation. Temperature rose slightly throughout the exercise and either dropped during recovery or did not continue to rise in the case of subject three. Figure 5. Hemoglobin Saturation Point Hemoglobin saturation seems to drop during exercise but increase to its most efficient state during recovery. [...]
[...] Once exercise commenced the measurements were taken three, six, nine, and twelve minutes into the exercise bout. Measurements were again taken three and six minutes into recovery. Exercise ended for subjects one and two after twelve minutes. Subject three stopped exercising after nine minutes. Heart rate appears to be the lowest prior to exercise. Once exercise begins the heart rate increases significantly initially before tapering off and rising steadily over the course of the exercise bout. There seems to be a steep increase from the nine minute mark to the twelve minute mark for the two subjects who exercised for twelve minutes. [...]
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