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Why Do Olympians Wear That Colorful Tape?

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You may have first noticed the markings on the synchronized swimmers' backs. Or cascading down a beach volleyball player's chiseled abs. Birthmarks? Accessories? A bizarre form of intimidation? No, no, and no. The answer is Kinesio tape. And, yes, it's all the rage in the sports world.

So, what is this tricked-out injury treatment?

It's a heavily adhesive, hypoallergenic, stretchy tape that comes, as we have seen, in an array of colors and patterns. It is designed to approximate the weight and thickness of skin and can be stretched over any part of the body. Made of cotton fiber, the tape has an acrylic, heat-activated backing and can stay attached for up to five days. When adhered, the tape lifts the upper layers of the skin away from the muscle, relieving pressure and pain in the affected area.

While the tape was developed by Dr. Kenzo Kase in the mid-1970s, it first started cropping up on a body part here or there during the Beijing Olympics in 2008. But that was enough to spark an interest and, following the summer games, sales of the tape jumped a reported 300 percent. Now, clearly, it has taken the athletic world by storm.

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But if you, lay-athletic person, were hoping to jump on the Kinesio bandwagon, you may have to sit tight, because not just anyone can slap on the tape. To do it properly, you need to use a particular technique that requires training.

DOES IT WORK?

The research is slim, and some scientists are dubious. According to Reuters, a 2012 report in the journal Sports Medicine found "little quality evidence to support the use of Kinesio tape over other types of elastic taping in the management or prevention of sports injuries." But Kevin Anderson, director of Kinesio UK, says the research just needs time to catch up to the sports phenomenon.

"There's nothing magical in the tape," Anderson told Reuters, "it certainly can't improve your performance or make you Superman," but he says it does help relieve pain and swelling for the athletes.

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German beach volleyball player Sara Goller, who wore hot pink tape throughout the 2012 London Games, says the color is nice, but its purpose is what matters. "It can release or put tension on a muscle, it depends on what you want," she told Reuters.

Lindon, Utah-based brand KT Tape is the official Kinesiology tape licensee of the U.S. Olympic team and counts Kerri Walsh Jennings, James Harden, and Kerri Strug among its fans.

Even if the tape doesn't actually do anything beneficial, physically, it can give athletes a boost of confidence, simply because they think it is working wonders on their battered bodies. And in such high-stakes, high-pressure situations like the Olympic Games, the slightest form of encouragement is sometimes all you need.

This post originally appeared in 2012.

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Big Questions
What Do Morticians Do With the Blood They Take Out of Dead Bodies?
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Zoe-Anne Barcellos:

The blood goes down the sink drain, into the sewer system.

I am not a mortician, but I work for a medical examiner/coroner. During an autopsy, most blood is drained from the decedent. This is not on purpose, but a result of gravity. Later a mortician may or may not embalm, depending on the wishes of the family.

Autopsies are done on a table that has a drain at one end; this drain is placed over a sink—a regular sink, with a garbage disposal in it. The blood and bodily fluids just drain down the table, into the sink, and down the drain. This goes into the sewer, like every other sink and toilet, and (usually) goes to a water treatment plant.

You may be thinking that this is biohazardous waste and needs to be treated differently. [If] we can’t put oil, or chemicals (like formalin) down the drains due to regulations, why is blood not treated similarly? I would assume because it is effectively handled by the water treatment plants. If it wasn’t, I am sure the regulations would be changed.

Now any items that are soiled with blood—those cannot be thrown away in the regular trash. Most clothing worn by the decedent is either retained for evidence or released with the decedent to the funeral home—even if they were bloody.

But any gauze, medical tubing, papers, etc. that have blood or bodily fluids on them must be thrown away into a biohazardous trash. These are lined with bright red trash liners, and these are placed in a specially marked box and taped closed. These boxes are stacked up in the garage until they are picked up by a specialty garbage company. I am not sure, but I am pretty sure they are incinerated.

Additionally anything sharp or pointy—like needles, scalpels, etc.—must go into a rigid “sharps” container. When they are 2/3 full we just toss these into one of the biotrash containers.

The biotrash is treated differently, as, if it went to a landfill, then the blood (and therefore the bloodborne pathogens like Hepatitis and HIV) could be exposed to people or animals. Rain could wash it into untreated water systems.

This post originally appeared on Quora. Click here to view.

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Why Does Asparagus Make Your Pee Smell Funny?
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The asparagus has a long and storied history. It was mentioned in the myths and the scholarly writings of ancient Greece, and its cultivation was the subject of a detailed lesson in Cato the Elder's treatise, On Agriculture. But it wasn't until the turn of the 18th century that discussion of the link between asparagus and odorous urine emerged. In 1731, John Arbuthnot, physician to Queen Anne, noted in a book about food that asparagus "affects the urine with a foetid smell ... and therefore have been suspected by some physicians as not friendly to the kidneys." Benjamin Franklin also noticed that eating asparagus "shall give our urine a disagreeable odor."

Since then, there has been debate over what is responsible for the stinky pee phenomenon. Polish chemist and doctor Marceli Nencki identified a compound called methanethiol as the cause in 1891, after a study that involved four men eating about three and a half pounds of asparagus apiece. In 1975, Robert H. White, a chemist at the University of California at San Diego, used gas chromatography to pin down several compounds known as S-methyl thioesters as the culprits. Other researchers have blamed various "sulfur-containing compounds" and, simply, "metabolites."

More recently, a study demonstrated that asparagusic acid taken orally by subjects known to produce stinky asparagus pee produced odorous urine, which contained the same volatile compounds found in their asparagus-induced odorous urine. Other subjects, who normally didn't experience asparagus-induced odorous urine, likewise were spared stinky pee after taking asparagusic acid.

The researchers concluded that asparagusic acid and its derivatives are the precursors of urinary odor (compared, in different scientific papers, to the smell of "rotten cabbage," "boiling cabbage" and "vegetable soup"). The various compounds that contribute to the distinct smell—and were sometimes blamed as the sole cause in the past—are metabolized from asparagusic acid.

Exactly how these compounds are produced as we digest asparagus remains unclear, so let's turn to an equally compelling, but more answerable question:

WHY DOESN'T ASPARAGUS MAKE YOUR PEE SMELL FUNNY?

Remember when I said that some people don't produce stinky asparagus pee? Several studies have shown that only some of us experience stinky pee (ranging from 20 to 40 percent of the subjects taking part in the study, depending on which paper you read), while the majority have never had the pleasure.

For a while, the world was divided into those whose pee stank after eating asparagus and those whose didn't. Then in 1980, a study complicated matters: Subjects whose pee stank sniffed the urine of subjects whose pee didn't. Guess what? The pee stank. It turns out we're not only divided by the ability to produce odorous asparagus pee, but the ability to smell it.

An anosmia—an inability to perceive a smell—keeps certain people from smelling the compounds that make up even the most offensive asparagus pee, and like the stinky pee non-producers, they're in the majority.

Producing and perceiving asparagus pee don't go hand-in-hand, either. The 1980 study found that some people who don't produce stinky pee could detect the rotten cabbage smell in another person's urine. On the flip side, some stink producers aren't able to pick up the scent in their own urine or the urine of others.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

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