Monday, October 25, 2010
Patron Big Bottle Patron For The Party! ?
Taking into account the energy needed to run a marathon, energy storage capacity of the body and power broker, the researchers calculated precisely how much carbohydrate, high energy, needs to eat a runner before race day and what speed limit is necessary to complete the 42 miles. 'is very important to this measurement for a competitive athlete,' I can go at a pace of six minutes per mile and a half or too fast? Or is it better to go to six minutes and 10 seconds for 1.5 km.? " The study of Investigator Benjamin Rapoport, a doctoral student in the Department of Health Sciences and Technology Harvard-MIT, commented, 'this knowledge can make the difference between'
touching the wall 'or victory. "
Benjamin Rapoport detailed their findings in the journal PLoS Computational Biology
of 21 October.
The Runner's World
Rapoport knows what he is touching the wall. Has been running marathons for years, and has experienced exhaustion and pain of running out of fuel in the Marathon 2005 in New York.
'You feel a little as if carried out one of those crash diets, "said Rapoport. 'Only when you wear the diet occurs in the course of a few days while it undergoes a runner after a few minutes. " Rapoport
originally began studying the physiology of long distance races in 2005, then wanted to miss class to compete in the Boston Marathon. His professor of medical school gave him permission, but with one condition, that again prepared to give a speech class on the physiology of the marathon.
"Obviously, there was no way to say no," said Rapoport. The success of his talk after the race was such that the professor was invited to return next year and the next too. Finally he realized that his calculations on how the body uses energy in a long-term exercise went beyond what was available in scientific literature, which in turn led to an assignment in a research project.
carbohydrate foods
The ability to run long distances depends mainly on three factors explained Rapoport. The most important, which separates the casual runners athletes, aerobic capacity is also known as
VO 2 max . The VO 2 max is like the output of an engine, the maximum amount of oxygen your muscles can absorb to continue working.
The next factor is the energy cost of the race, which is the equivalent in miles per gallon
a car. The last factor is the gas tank body, ie the storage space available for carbohydrates, especially carbohydrate called glycogen stored in the liver and muscles, and that is the main fuel during exercise.
By combining these factors, Rapoport has created a mathematical model of how long and how fast can racers go any size without touching the wall
. The model also helps to calculate the amount of 'carbohydrate loading', consumption of carbohydrates, that the corridor should be completed in the days before the race.
This model also reveals the physiological basis of one of the greatest challenges of the Boston Marathon. Men 19 to 34 years who want to run this marathon should have a qualifying time of three hours and 10 minutes or less. The women of the same age must have a qualifying time of three hours and 40 minutes or less. These numbers are no longer based on science, Rapoport said, but rather to establish a screen to reach about 10 percent of the runners.
As it turns out that there is no science behind the qualifying times, times for both men and women, will challenge the fuel reserves of even the best runners. 'Times have evolved to the point of having a physiological sense, "said Rapoport.
Preparing marathon
The calculator, available on the PLoS web site, can help athletes to wear the race pace and eat well before the race, said Mark Cucuzzella, professor of family medicine in the West Virginia University and coach and captain of the Air Force Reserves Marathon Team.
'Here, take some basic principles of science and its application holds for a recreational runner and the most advanced competitive runner, "said Cucuzzella. Rapoport
plans to meet with the model runs the New York Marathon on 7 November. "What I can say from personal experience, I know this has helped me improve my own race, "he said.
Note: For those who do not defend well in English, the data requested by the calculator are:
| Age (in Years) Resting Heart Rate (in Beats per Minute) Target Marathon Finishing Time [Hours] . . . - [Minutes]. . . - [Seconds] | weight. . . -Pounds. . . -Kilograms Age (years) Frequency resting heart (beats per minute) Proposed time of completion of the Marathon [in hours] . . . - [Minutes]. . . - [Seconds] |
- - Reference: LiveScience.com, October 21, 2010, by Stephanie Pappas
- - Source: PLoS Computational Biology 21 October.
- - Related article in LiveScience: Why carbohydrates improve the performance of marathon runners? .
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