K
kfiore
Guest
Project Summary: It is a necessity for athletes to re-hydrate their bodies during and after exercise. Proper hydration and nutrients increase endurance, lower sub-maximal exercise heart rate, and reduce fluid loss (Duvillard, etal., 2004). During exercise, the heat produced by working muscles exceeds the heat released by the body causing overall body temperature to rise. This increase in temperature causes an increase in sweating and blood flow to the skin. As a result, heat is removed by the evaporation of sweat from the skin, radiated from the body to the cooler surroundings, and is lost by convection to moving air. A heavy sweater can potentially lose more than 3 quarts of sweat during each hour of exercise. That means dehydration can develop very quickly. Sport drinks contain carbohydrates and electrolytes that should re-hydrate the body more effectively than water. Sports drinks such as Gatorade also contain sodium, which helps promote responsive muscle contraction and the necessary water retention (Smith, 1992). Gatorade has ingredients to quench thirst and replenish lost electrolytes, providing muscle glycogen, which aids in athletic endurance and fluid retention.
In Scheett’s study scientists found that if athletes had a protein heavy sport drink before a marathon, subjects would drive themselves harder and run about three minutes longer on the final run than when they drank a plain carb sports drink (Scheett, 2008). Gatorade does not have a large protein content, therefore, endurance levels are not expected to show a significant difference when comparing Gatorade to water based on protein content. However, consumption of a carbohydrate and electrolyte heavy drink was seen to be more effective than water in minimizing fluid shortage and mean core temperature responses during training and athletics in the heat of a day (Bergerson, etal., 2006). Due to the high electrolyte and carbohydrate content, the overall results of athletic endurance are expected to be significantly higher for Gatorade compared to water.
Project Description: 10 male athletes, aged 17-20 years old, with a similar athletic build and stamina will be involved in this test. They will each have 20 minutes to drink 32 ounces of one of the two sport drinks, stretch, and ready themselves to bike for 20 minutes. The biking period will be done on a standard 27 speed bicycle with no incline and all athletes using the same speed. During the last 5 minutes of the 20 minute preparation time, their respiratory rate will be measured with a respirometer to record a full 25 minutes of respiratory activity. This test will be repeated 2 times for each drink on each athlete to compare their rates, not only to each other, but also to themselves. In total each athlete will be tested 4 times, which will give us 40 data collections collectively.
References:
Von Duvillard, S. Braun, W. Markofski, M. Beneke, R. and Leithauser, R. (2004) Fluids and Hydration in Prolonged Endurance Performance. Nutrition. Vol 20, #7-8. Pg651-656.
Scheett, T. (2008). “PRO FUEL.” Joe Weider's Muscle & Fitness. ProQuest Health and Medical Complete, ProQuest. Web. Accessed 1 Sep. 2009.
Smith, J. (1992). A Look at the Components and Effectiveness of Sports Drinks.
Journal of Athletic Training, Vol 27. #2. Pg173-176.
Bergeron, M. Waller, J. and Marinik, E. (2006) “Voluntary fluid intake and core temperature responses in adolescent tennis players: sports beverage versus water.” British Journal of Sports Medicine. ProQuest Health and Medical Complete, ProQuest. Web. Accessed 13 Sep. 2009.
Budget: An average of $250.00 will be used in this experiment for drinks and machinery.
In Scheett’s study scientists found that if athletes had a protein heavy sport drink before a marathon, subjects would drive themselves harder and run about three minutes longer on the final run than when they drank a plain carb sports drink (Scheett, 2008). Gatorade does not have a large protein content, therefore, endurance levels are not expected to show a significant difference when comparing Gatorade to water based on protein content. However, consumption of a carbohydrate and electrolyte heavy drink was seen to be more effective than water in minimizing fluid shortage and mean core temperature responses during training and athletics in the heat of a day (Bergerson, etal., 2006). Due to the high electrolyte and carbohydrate content, the overall results of athletic endurance are expected to be significantly higher for Gatorade compared to water.
Project Description: 10 male athletes, aged 17-20 years old, with a similar athletic build and stamina will be involved in this test. They will each have 20 minutes to drink 32 ounces of one of the two sport drinks, stretch, and ready themselves to bike for 20 minutes. The biking period will be done on a standard 27 speed bicycle with no incline and all athletes using the same speed. During the last 5 minutes of the 20 minute preparation time, their respiratory rate will be measured with a respirometer to record a full 25 minutes of respiratory activity. This test will be repeated 2 times for each drink on each athlete to compare their rates, not only to each other, but also to themselves. In total each athlete will be tested 4 times, which will give us 40 data collections collectively.
References:
Von Duvillard, S. Braun, W. Markofski, M. Beneke, R. and Leithauser, R. (2004) Fluids and Hydration in Prolonged Endurance Performance. Nutrition. Vol 20, #7-8. Pg651-656.
Scheett, T. (2008). “PRO FUEL.” Joe Weider's Muscle & Fitness. ProQuest Health and Medical Complete, ProQuest. Web. Accessed 1 Sep. 2009.
Smith, J. (1992). A Look at the Components and Effectiveness of Sports Drinks.
Journal of Athletic Training, Vol 27. #2. Pg173-176.
Bergeron, M. Waller, J. and Marinik, E. (2006) “Voluntary fluid intake and core temperature responses in adolescent tennis players: sports beverage versus water.” British Journal of Sports Medicine. ProQuest Health and Medical Complete, ProQuest. Web. Accessed 13 Sep. 2009.
Budget: An average of $250.00 will be used in this experiment for drinks and machinery.