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TRANSAERO №10 October 2013
E N G L I S H Health
In Search of Lost Time In both movies and reality there is a price to pay for enjoying superhuman powers. After crossing half the world by plane in just a few hours, we can expect to suffer some repercussions. Although it is hardly possible to completely avoid them, there are some things we can do to reduce their effects on us. NATALYA INSHAKOVA SHAMIL GAR AEV
AN ALASKAN BASEBALL TEAM THROUGHOUT THEIR TWENTYYEAR HISTORY HAD MANАGED TO WIN ONLY 28 MATCHES. The reason was not that players and coaches didn’t know the game. On the contrary, when they played at home their talent and skills had been repeatedly praised by commentators. In all their away games, however, when the team had to travel far and to do so frequently, their performance dramatically dropped. Dozens of American scientists followed the team for three years and came to the rather unusual conclusion that the team’s constant jetlag was to blame for their poor performance. Jetlag is an informal term commonly used to describe the effects of traveling across timezones. The name “twentiethcentury disease”, however trite, suits this malaise well. Until the 1950’s, before the arrival of passenger jet aircrafts, this health problem had not come into existence. traveling by carriage, ship or even train didn’t involve crossing ten different time-zones in a day. Passengers’ body clocks, thus, remained intact. Explaining Jetlag: Theory Life according to a timetable Our internal clock is an actual organ which goes by the complex name “suprachiasmatic nucleus”. This group of neurons is situated in the hypothalamus and is responsible for controlling our circadian rhythms; in other words, the biological rhythms we humans live by. It works as follows: visual receptors tell the brain the time of day, whether it is day or night, and the brain, in turn, gives the rest of our body appropriate orders. For instance, our large intestine is most active at dawn, our gallbladder and liver at night, whereas our reproductive system is so in the evening. More than 500 processes in a human body are directly related to the time of day, including our body temperature and mood. Even the single-hour
shift of daylight saving time can be quite detrimental to our well-being. According to the German research institute Forsa, more than half of Europeans experience a type of sleep disorder and the aggravation of chronic medical conditions after the clocks are adjusted a mere hour forward. Imagine the consequences of a flight from Moscow to Los-Angeles, two cities with a 12 hour difference! Time travel The term “time-zone change syndrome” speaks for itself: to experience jetlag you have to cross a number of time-zones. This is why it is much easier to recover after a ten-hour trip from Moscow to the Seychelles, two locations within the same time-zone, rather than after a four-hour flight from Moscow to London. Desynchronosis usually occurs after a change of three or more time-zones, although some travelers can experience discomfort after traveling across even one time-zone. Numerous studies have shown that adjustment to the new time-zone is easier for east-to-west travel than from west-to-east. Massachusetts
University scientists spent three years monitoring football players traveling across the country. It became evident that if an away team traveled westto-east, it was on the losing side in 70% of matches, whereas east-to-west flights had no effect on the game’s outcome. According to Prof. William Schwartz, who supervised the study, westward flights made the days longer, while flights to the east shortened them. A tourist arriving in Moscow from Beijing will have to go to bed and set the alarm four hours earlier than usual – and will probably fail to fall asleep, but will have to get up anyway . Swiss scientists claim that it takes 20% less time to recover from a trip to the west than to the east. Time disease The Australian Hawke Research Institute estimated that losses from jetlag total up to 70 billion dollars annually. Business people are late for their meetings, bankers scuttle the deals and students fail their exams. All this occurs because the complications of jetlag are far more serious than those of simple tiredness.
Jetlag is often confused with travel fatigue, but they actually have little in common. In 2007 the Research Institute for Sport and Exercise Science in Liverpool conducted an extensive research and interviewed thousands of travelers with the intention of specifying the main differences between jetlag and travel fatigue. The common signs of travel fatigue are tiredness, headache, dehydration, and muscular pain caused by preflight furore, lack of sleep, the long time spent in the aircraft’s cramped space and the dryness of airplane’s air. Fortunately, after a good night’s sleep and a healthy meal the effects of travel fatigue disappear. True jetlag, however, has different symptoms. First of all, it affects sleep in a number of ways: trouble falling asleep, sleep disruption, early awakening if traveling west and late, if traveling east. A second category of symptoms involve failing to concentrate, a hazy mind and the almost complete inability to perform mental tasks. Jetlag also brings about problems with digestion: diarrhea or constipation,