News / Science & Technology

Study: Astronauts Sleep Deprived, Use Sleeping Pills

Astronaut Mike Hopkins, Expedition 38 Flight Engineer, is shown in this handout photo provided by NASA as he participates in the second of two spacewalks which took place on December 24, 2013, released on December 27, 2013.
Astronaut Mike Hopkins, Expedition 38 Flight Engineer, is shown in this handout photo provided by NASA as he participates in the second of two spacewalks which took place on December 24, 2013, released on December 27, 2013.

Related Articles

Rosetta Probe Meets Comet After Decade-Long Chase

Rosetta spacecraft will escort Comet 67P for the next year and observe it as it heads towards the sun

Video NASA Probing Secrets of Van Allen Radiation Belt

Scientists say better understanding of Van Allen belt will help us prepare for potential surprises from our own sun
VOA News

Despite the allure of floating in a weightless environment, outer space may not be the best place to take a snooze, according to new research.

Over the course of a 10-year study of astronauts’ sleeping patterns, researchers at the Brigham and Women’s Hospital (BWH) Division of Sleep and Circadian Disorders, Harvard Medical School, and the University of Colorado found the astronauts “suffer considerable sleep deficiency in the weeks leading up to and during space flight.”

“Sleep deficiency is pervasive among crew members,” stated Laura K. Barger, PhD, associate physiologist in the BWH Division of Sleep and Circadian Disorders, and lead study author in a statement. “It’s clear that more effective measures are needed to promote adequate sleep in crew members, both during training and space flight, as sleep deficiency has been associated with performance decrements in numerous laboratory and field-based studies.”

Researchers tallied the sleeping patterns of 85 astronauts over more than 4,000 nights on Earth and more than 4,200 nights in space during 80 space shuttle missions and missions to the International Space Station.

The conclusion of the research was that “more effective countermeasures to promote sleep during space flight are needed in order to optimize human performance.”

While the U.S. space agency NASA allocates 8.5 hours of sleep per night during missions, the study revealed astronauts were only sleeping an average of less than 6 hours on shuttle missions and just over 6 hours in ISS missions.

Very few space sleep sessions lasted over 7 hours, researchers found.

But it wasn’t just in space where the astronauts slept poorly. Sleep deficiency began as much as three months before launch, with astronauts sleeping just 6.5 hours a night during pre-mission training.

The study revealed that astronauts were aware of being sleep deprived and turned to sleeping pills for help.

Three out of four ISS crew members reported using medication at some point during the mission, while roughly the same amount of shuttle crew members reported using medication more than half the nights they were in space.

Barger called the high rate of sleeping pill use concerning.

“The ability for a crew member to optimally perform if awakened from sleep by an emergency alarm may be jeopardized by the use of sleep-promoting pharmaceuticals,” said Barger, adding that most sleeping pills come with warnings about engaging in hazardous occupations while under the influence.

“This consideration is especially important because all crew members on a given mission may be under the influence of a sleep promoting medication at the same time,” she said.

You May Like

Turkey: No Ransom Paid for Release of Hostages Held by IS Militants

President Erdogan hails release of hostages as diplomatic success but declines to be drawn on whether their release freed Ankara's hand to take more active stance against insurgents More

Audio Sierra Leone Ends Ebola Lockdown

Health ministry says it has reached 75 percent of its target of visiting 1.5 million homes to locate infected, educate population about virus More

US Pivot to Asia Demands Delicate Balancing Act

As the tumult in the Middle East distracts Obama, shifting American focus eastward appears threatened More

This forum has been closed.
Comment Sorting
Comments
     
by: yataro from: Japan
August 10, 2014 10:01 AM
Sleeping is really sensitive behavior.
When we change the sleeping place, for example traveling, it is a little hard to sleep.
By the way,I wander if the sleep promoting pills work well, because most of the astronauts can't sleep well with sleep promoting pills in this article.
so I would say that they don't have to care for jeopardizing.

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Natural Gas Export Plan Divides Maryland Towni
X
Deborah Block
September 21, 2014 2:12 PM
A U.S. power company that has been importing natural gas now wants to export it. If approved, its plant in Lusby, Maryland, would likely be the first terminal on the United States East Coast to export liquefied natural gas from American pipelines. While some residents welcome the move because it will create jobs, others oppose it, saying the expansion could be a safety and environmental hazard. VOA’s Deborah Block examines the controversy.
Video

Video Natural Gas Export Plan Divides Maryland Town

A U.S. power company that has been importing natural gas now wants to export it. If approved, its plant in Lusby, Maryland, would likely be the first terminal on the United States East Coast to export liquefied natural gas from American pipelines. While some residents welcome the move because it will create jobs, others oppose it, saying the expansion could be a safety and environmental hazard. VOA’s Deborah Block examines the controversy.
Video

Video Fears Ebola Outbreak ‘Beyond Our Capability to Contain’

Each day brings with it new warnings about the deadly Ebola outbreak already blamed for killing more than 2,600 people across West Africa. And while countries and international organizations like the United Nations are starting to come through on promises of help for those most affected, the unprecedented speed with which the virus has spread is raising questions about the international response. VOA's Jeff Seldin has more from Washington.
Video

Video Difficult Tactical Battle Ahead Against IS Militants in Syria

The U.S. president has ordered the military to intensify its fight against the Islamic State, including in Syria. But how does the military conduct air strikes in a country that is not a U.S. ally? VOA correspondent Carla Babb reports from the Pentagon.
Video

Video Iran, World Powers Seek Progress in Nuclear Talks

Iran and the five permanent members of the U.N. Security Council plus Germany, known as the P5 + 1, have started a new round of talks on Iran's nuclear program. VOA State Department correspondent Pam Dockins reports that as the negotiations take place in New York, a U.S. envoy is questioning Iran's commitment to peaceful nuclear activity.
Video

Video Alibaba Shares Soar in First Day of Trading

China's biggest online retailer hit the market Friday -- with its share price soaring on the New York Stock Exchange. The shares were priced at $68, but trading stalled at the opening, as sellers held onto their shares, waiting for buyers to bid up the price. More on the world's biggest initial public offering from VOA’s Bernard Shusman in New York.
Video

Video Obama Goes to UN With Islamic State, Ebola on Agenda

President Obama goes to the United Nations General Assembly to rally nations to support a coalition against Islamic State militants in Iraq and Syria. He also will look for nations to back his plan to fight the Ebola virus in West Africa. As VOA White House correspondent Luis Ramirez reports, Obama’s efforts reflect new moves by the U.S. administration to take a leading role in addressing world crises.
Video

Video Migrants Caught in No-Man's Land Called Calais

The deaths of hundreds of migrants in the Mediterranean this week has only recast the spotlight on the perils of reaching Europe. And for those forunate enough to reach a place like Calais, France, only find that their problems aren't over. Lisa Bryant has the story.
Video

Video Westgate Siege Anniversary Brings Back Painful Memories

One year after it happened, the survivors of the terror attack on Nairobi's Westgate Shopping Mall still cannot shake the images of that tragic incident. For VOA, Mohammed Yusuf tells the story of victims still waiting for the answer to the question 'how could this happen?'
Video

Video Militant Assault in Syria Displaces Thousands of Kurds

A major assault by Islamic State militants on Kurds in Syria has sent a wave of new refugees to the Turkish border, where they were stopped by Turkish border security. Turkey is already hosting about 700,000 Syrian refugees who fled the civil war between the government and the opposition. But the government in Ankara has a history of strained relations with Turkey's Kurdish minority. Zlatica Hoke reports Turkey is asking for international help.
Video

Video Whaling Summit Votes to Uphold Ban on Japan Whale Hunt

The International Whaling Commission, meeting in Slovenia, has voted to uphold a court ruling banning Japan from hunting whales in the Antarctic Ocean. Conservationists hailed the ruling as a victory, but Tokyo says it will submit revised plans for a whale hunt in 2015. Henry Ridgwell reports from London.
Video

Video A Dinosaur Fit for Land and Water

Residents and tourists in Washington D.C. can now examine a life-size replica of an unusual dinosaur that lived almost a hundred million years ago in northern Africa. Scientists say studying the behemoth named Spinosaurus helps them better understand how some prehistoric animals adapted to life on land and in water. The Spinosaurus replica is on display at the National Geographic museum. VOA’s George Putic has more.
Video

Video Iraqi Kurdistan Church Helps Christian Children Cope find shelter in churches in the Kurdish capital, Irbil

In the past six weeks, tens of thousands of Iraqi Christians have been forced to flee their homes by Islamic State militants and find shelter in churches in the Kurdish capital, Irbil. Despite U.S. airstrikes in the region, the prospect of people returning home is still very low and concerns are starting to grow over the impact this is having on the displaced youth. Sebastian Meyer reports from Irbil on how one church is coping.


Carnage and mayhem are part of daily life in northern Nigeria, the result of a terror campaign by the Islamist group Boko Haram. Fears are growing that Nigeria’s government may not know how to counter it, and may be making things worse. More

AppleAndroid