Sport Project SWIMMING

Sport Project SWIMMING - Loose more heat in cold water...

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Loose more heat in cold water Swimming Claudine Tran, Jeremy Banas, Brandon Sunkel, Jennifer Chu Physiology Respiratory System (Hoffman 310, Costil 15-16) - Ventilation o As the intensity increases, the maximum ventilation increases o Air is breathed mainly through the mouth while swimming travels to the lungs diffused into the blood stream o Respiratory system is already challenged due to water pressure and the fact the your breath must be held When in water, the water pressure is acting on your body. To compensate, your body creates an internal pressure. o At rest About 2% of body’s energy is used for breathing o During high speed swimming More than 15% of body’s energy used by muscles of the chest wall, diaphragm, and abdomen This means 15% of energy is focused just on breathing, not even the muscles used when swimming such as muscles in the arms and legs. Cardiovascular System (Hoffman 308-309, Costil 14-15) - System composed of heart, blood vessels, and blood - Primary function is to transport oxygen to tissues o Once oxygen first diffused into the blood stream travels throughout body and delivers energy to muscle tissue blood leaves tissues carrying CO2 with it and other wastes goes back to lungs and is exhaled - At rest o Most blood goes to brain and internal organs, only 15% goes to skeletal muscles - Swimming at high intensities o About 2/3 of blood goes to skeletal muscle in use
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o Being in water lowers the heart rate 5-8 beats/min than it would normally be at Increase intensities of swimming increase in heart rate, stroke volume, cardiac output, oxygen uptake Studies show that swimming in lower volume at higher intensities is better than swimming much o A good way to monitor swimmers’ improving cardiovascular fitness is to take their heart rates after a - Oxygen uptake and heart rate are different based on the type of swimming stroke
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GRAPH: Shows how different strokes require different levels of energy, with the front crawl being the “easiest” and the breaststroke being the Effects of swimming training on heart rate during 400m front crawl -black dots= group training normally -white dots= group training twice daily during intensified period Temperature Regulation (Hoffman, 310-311) - As muscles contract during swimming, body heat is - As body temperature rises, skin blood vessels dilate begin to sweat to reduce heat
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In the cold water, the body’s heat loss increases dramatically since the water is a good heat conductor Outdoor pools or oceans tend to be a little colder, due to outside temperatures and wind. The cold temperatures make your body release a lot of its heat, and thus a lot of its energy. This can and will Indoor pools tend to be a little bit warmer, so that the body does not lose as much of its heat and energy.
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Sport Project SWIMMING - Loose more heat in cold water...

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