Notre Dame Hintergrundbild

Beet Juice increases endurance athletes

Chris Carver last year ran 224 kilometers (140 miles) ultramarathon in Scotland, a test in which participants have to cover as much distance as possible within 24 hours .

Determined to surpass that performance in the competition in 2010, Carver added extras to their preparation: beet juice (beet).

Carver won the test conducted in August and attributed the triumph to which he drank the dark purple liquid every day for a week before the race

"The only thing different I did this year was to make beet juice," said the professional racer. The athlete is 46 years old and live near Leeds in northern England.

Carver said that thanks to the beet juice, improved strength and this year achieved 12.8 kilometers (eight miles) would have increased further as their training. According

the athlete to achieve the greatest distance without taking beet juice would have needed to exercise all year round.

According to experts, adding beet juice to the diet (or other foods like cherry juice or milk), can increase physical performance to levels above those that would result if the training were increased blood , sweat and tears.

In two studies in the University of Exeter with 15 cyclists, Stephen Bailey and his colleagues found that those who drank a pint (half a quart) of beet juice several hours before the start of the test 20% traveled distance who had received placebo blackcurrant juice.

By analyzing with a scan of the energy expended when a muscle contracts, the researchers found that with beet juice (beet) cyclists consumed less oxygen when exercising. " beet juice was effective (for resistance) even without any extra training " said Bailey. " reduces the energy expenditure of the muscles and therefore more resistance."

The manufacturer of the beet juice provided free of charge and paid the University of Exeter research.

athletic benefits of beet juice due to its high content of nitrate , Bailey said.

Scientists do not know precisely how it works but speculate that an increase in the body _ a nitric oxide derivative of nitrato_, reduce oxygen consumption during exercise.

Bailey said the same effect would be possible if you increase the intake of nitrate-rich foods such as lettuce and spinach.

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milk might be better for athletes energy drinks

Scientists say they have growing evidence that some athletes say, that the milk could be as good or even better than some energy drinks to recover after exercise.

milk benefits for health are known for some time. The fluid contains carbohydrates, electrolytes, calcium and vitamin D, but also has the two most recommended protein to rebuild muscles: casein and whey.


muscles after suffering intense aerobic session, such as running, playing soccer or riding bikes and the casein and whey proteins are precisely what the body needs to regenerarar muscles quickly.


At the end of almost all physical training sessions, Matt Whitmore takes a pint of milk from the bottle. "I do quite religious" Whitmore said, a coach of 25 years who lives in London.


The coach started to take milk after exercise 10 years ago when I could not pay for supplements, protein drinks or more expensive. "Milk helps me recover faster and I feel great afterwards," he said. "Now, I like to go without taking it."


Glenys Jones, a nutritionist at the Medical Council of Britain, said the milk protein content makes it the ideal drink after a workout. "Milk provides the building blocks you need to build new muscles," he said.


The nutritionist reported that sports drinks simply replace carbohydrates and electrolytes lost, but usually do not have the nutrients needed to regenerate the muscles.


experts have not been able to agree to determine if the milk is better than energy drinks.


dairy producers have wanted to enter that market millionaire, in some cases funding studies on the benefits of milk for athletes, but some believe that the investigations are biased. The debate continues, as the milk continues to gain attention.


In a study published in June in the Journal of Applied Psychology Physiology, Nutrition and Metabolism, lols scientists found that people who consume milk after resistance exercise was longer in the next session of exercise than those taking other sports drinks or water.


"is the form of carbohydrates and nutrients of milk are more important," said Emma Cockburn, a professor in sports training at the University of Northumbria University in northeast England, and author of the study, which was funded part by the dairy industry

December 2010 Milena Velba

Doctors warn of danger to the eyes of women

A 15 year old boy was seriously damaged eye while playing with a laser pointer he bought on the internet, doctors said warn that dangerous high-power versions of these devices are available online.

An ophthalmologist described it as "a legitimate threat to public health."

The boy's case is published in Thursday's issue of the journal New England Journal of Medicine by doctors who treated him at the Cantonal Hospital of Lucerne, Switzerland.

The case follows two reports of similar accidents in June. British doctors say a teenager was injured eye with a high power laser pointer, and a British doctor reported vision problems for several months after he was hit by light emitted a pointer used by his 7 years.

Laser pointers are devices that resemble feathers and emit a narrow beam of laser light. They are used at conferences to highlight information during presentations, for example.

pointers sold in the U.S. are subject to a power limit set by the Food and Drug Administration (FDA, for its acronym in English) so as not to cause instant damage to the eyes, although it is possible there is damage if exposure is prolonged.

laser pointers that go beyond the limits of the FDA, however, are available online.

The Swiss child acquired the internet got a laser pointer 30 times more potent than the FDA limit. He bought it to blow up balloons and making holes in paper and sneakers from his sister, doctors said.

One day the child was playing with the pointer in front of a mirror to create a light show, but the green beam accidentally hit his eyes several times.

vision in his left eye was so affected that he could not count the fingers of another person to more than one meter (three feet) away. His other eye also had a severe loss of vision, so serious that it was difficult to read a newspaper, said in an e-mail Dr. Martin Schmid, one of the doctors who brought the case.

Tests showed that the child had a hemorrhage in the left eye and several small scars on the right.

"This is a legitimate threat to public health," said Williams, a spokesman for the American Academy of Ophthalmology. "Parents should be aware that lasers are inadequate and available through the Internet," he said.

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laser pointers are more attractive to men in red can


NEW YORK (Reuters) - Men who want to draw attention women should wear red, a color according to new research that makes them look more attractive to the opposite sex.


Women in the U.S., Britain, Germany and China stated that men dressed in red appeared in photographs or images that were framed in red, were more sexually attractive than other colors, according to the study published in Journal of Experimental Psychology.


Andrew Elliot, author of a study by the University of Rochester, said he thought the color red was the only sexy women.


"Our results suggest that the link between red and sex also applies to men, "said Elliot.


" For women, the color makes a big difference, "he added.


Despite cultural inequalities related to the color, the findings that women feel attracted to men dressed in red is found in different countries.


The study consisted of seven experiments, some divided into two parts, each with a group of 20 to 57 people, 19 to 22 years of age. women participated in all experiments, while men were included in only one as the control group.


Women also associate red with high status, Elliot as a trend that is similar to the primates.


"In chimpanzees, the most senior male becomes more red in a spectacular way during a competition for primacy," he said.


"is a clear indicator of status. The females perceive that, and strive to mate with the most senior male available," he added.


The researchers suggested that men who use the color could trigger a behavior change and that something as simple as wearing a red tie will make them more secure in a business presentation.