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Другие новости и статьи › Обосновано и доказано: йога замедляет процесс старения

Карма 109
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18.01.2010
Традиционные асаны йоги, выполняемые регулярно в течение многих месяцев, могут помочь замедлить процесс старения. К такому, в общем-то, очевидному выводу пришли американские психиатры. Исследование, проведенное в Университете штата Огайо, показало, что у женщин, которые постоянно занимаются йогой, в крови содержится меньше цитокинов, активизирующих жизнедеятельность клеток.

Данное вещество считается маркером естественных процессов старения организма. Без цитокинов невозможно нормальное протекание воспалительной реакции, их концентрация в крови повышается также при различных заболеваниях сердечно-сосудистой, эндокринной и нервной систем. В частности, речь идет об ишемической болезни, инфаркте миокарда, инсульте и диабете.

Исследователи собрали 50 женщин, их средний возраст составил 41 год. Женщин разделили на две группы. В первую попали новички, которые начали занятия йогой сравнительно недавно и не успели еще провести более дюжины сеансов. Вторая группа состояла из «продвинутых» спортивных дам, практикующих асаны не реже двух раз в неделю на протяжении не менее двух лет. Всех участниц подвергли многоуровневым клиническим испытаниям, включавшим и стресс-тесты, в ходе которых их ноги держали в тазах с очень холодной водой или, к примеру, предлагали решать математические задачи без помощи ручки и бумаги, в уме. Результаты анализов крови в обеих группах продемонстрировали, что у новичков уровни цитокинов в целом выше, чем у продвинутых в практике йоги.

«Фактически мы увидели, что организмы женщин, которые давно занимаются йогой, гораздо слабее реагируют на стресс на биохимическом уровне», — говорит ведущий исследователь, профессор психиатрии и психологии, доктор Дженис Кикольт-Глейзер.

Таким образом, научно подтверждено еще одно чудесное свойство йоги как древнего и целительного искусства. «Известно, что воспаление играет существенную роль в физиологии многих заболеваний. Йогу, как сегодня представляется, следует признать наиболее простым и приятным способом уменьшить риск развития сердечно-сосудистых заболеваний, диабета и прочих возрастных заболеваний», - говорит соавтор работы, профессор иммунологии Рон Глейзер.

Уже известно, что собираются изучать в Университете Огайо в ближайшие месяцы. Следующим шагом группы ученых станет исследование влияния йоги на процессы, происходящие в организме больных раком. В частности, врачей интересует потенциальная роль йоги в восстановлении организма после операции на молочной железе. Исследователи уже ищут 200 женщин-добровольцев для данной работы, которая будет финансироваться Национальным институтом онкологии США.

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nick7 м
Карма 7
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18.01.2010
Нет ссылки на источник. А без нее теряется смысл утверждения, вынесенного в топик.
nick7 м
Карма 7
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18.01.2010
Уточню, ссылки на источник нет в оригинале на русском.
Карма 109
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18.01.2010
Это не утверждение, а название статьи на русском, на англ.немного по-другому, но содержание то же.

Can Yoga Prevent A Cytokine Storm?

Regularly practicing yoga exercises may lower a number of compounds in the blood and reduce the level of inflammation that normally rises because of both normal aging and stress, a new study has shown.

In the cases of respiratory infections, cytokines plays a part in a potentially fatal immune reaction called a "cytokine storm," in which the immune system of a healthy person goes haywire and "overreacts" to an infection. The cytokines command a patient's body to flood the lungs with fluids and mucous, which can eventually block off the airways and "drown" the patient.

In a study done by Ohio State University researchers and reported in the journal Psychosomatic Medicine, they showed that women who routinely practiced yoga had lower amounts of the cytokine interleukin-6 (IL-6) in their blood.

The women also showed smaller increases in IL-6 after stressful experiences than did women who were the same age and weight but who were not yoga practitioners.

IL-6 is an important part of the body's inflammatory response and has been implicated in heart disease, stroke, type-2 diabetes, arthritis and a host of other age-related debilitating diseases. Reducing inflammation may provide substantial short- and long-term health benefits, the researchers suggest.

"In addition to having lower levels of inflammation before they were stressed, we also saw lower inflammatory responses to stress among the expert yoga practitioners in the study," explained Janice Kiecolt-Glaser, professor of psychiatry and psychology and lead author of the study.

"Hopefully, this means that people can eventually learn to respond less strongly to stressors in their everyday lives by using yoga and other stress-reducing modalities."

For the study, the researchers assembled a group of 50 women, age 41 on average. They were divided into two groups -- "novices," who had either taken yoga classes or who practiced at home with yoga videos for no more than 6 to 12 sessions, and "experts," who had practiced yoga one of two times weekly for at least two years and at least twice weekly for the last year.

Each of the women was asked to attend three sessions in the university's Clinical Research Center at two-week intervals. Each session began with participants filling out questionnaires and completing several psychological tests to gauge mood and anxiety levels.

Each woman also was fitted with a catheter in one arm through which blood samples could be taken several times during the research tasks for later evaluation.

Participants then performed several tasks during each visit designed to increase their stress levels including immersing their foot into extremely cold water for a minute, after which they were asked to solve a series of successively more difficult mathematics problems without paper or pencil.

Following these "stressors," participants would either participate in a yoga session, walk on treadmill set at a slow pace (.5 miles per hour) designed to mirror the metabolic demands of the yoga session or watch neutral, rather boring videos. The treadmill and video tasks were designed as contrast conditions to the yoga session.

Once the blood samples were analyzed after the study, researchers saw that the women labeled as "novices" had levels of the pro-inflammatory cytokine IL-6 that were 41 percent higher than those in the study's "experts."

"In essence, the experts walked into the study with lower levels of inflammation than the novices, and the experts were also better able to limit their stress responses than were the novices," Kiecolt-Glaser explained.

The researchers did not find the differences they had expected between the novices and experts in their physiological responses to the yoga session.

Co-author Lisa Christian, an assistant professor of psychology, psychiatry and obstetrics and gynecology, suggested one possible reason:

"The yoga poses we used were chosen from those thought to be restorative or relaxing. We had to limit the movements to those novices could perform as well as experts.

"Part of the problem with sorting out exactly what makes yoga effective in reducing stress is that if you try to break it down into its components, like the movements or the breathing, it's hard to say what particular thing is causing the effect," said Christian, herself a yoga instructor. "That research simply hasn't been done yet."

Ron Glaser, a co-author and a professor of molecular virology, immunology and medical genetics, said that the study has some fairly clear implications for health.

"We know that inflammation plays a major role in many diseases. Yoga appears to be a simple and enjoyable way to add an intervention that might reduce risks for developing heart disease, diabetes and other age-related diseases" he said.

"This is an easy thing people can do to help reduce their risks of illness."

Bill Malarkey, an professor of internal medicine and co-author on the study, pointed to the inflexibility that routinely comes with aging.

"Muscles shorten and tighten over time, mainly because of inactivity," he said. "The stretching and exercise that comes with yoga actually increases a person's flexibility and that, in turn, allows relaxation which can lower stress."

Malarkey sees the people's adoption of yoga or other regular exercise as one of the key solutions to our current health care crisis. "People need to be educated about this. They need to be taking responsibility for their health and how they live. Doing yoga and similar activities can make a difference."

As a clinician, he says, "Much of my time is being spent simply trying to get people to slow down."

The researchers' next step is a clinical trial to see if yoga can improve the health and reduce inflammation that has been linked to debilitating fatigue among breast cancer survivors. They're seeking 200 women to volunteer for the study that's funded by the National Cancer Institute.

Researchers Heather Preston, Carrie Houts and Charles Emery were also part of the research team which was supported in part by a grant from the National Center for Complementary and Alternative Medicine, part of the National Institutes of Health.

http://preventdisease.com/news/10/011510_yoga_prevents_cytokine_storm. shtml
nick7 м
Карма 7
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18.01.2010
Спасибо, то что нужно!
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