Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Space Travel News .




SPACE TRAVEL
Simulated Mars mission shows good sleep is critical
by Staff Writers
Washington (AFP) Jan 9, 2013


Astronauts chosen for a manned mission to Mars could be in serious trouble if their sleep patterns are disrupted on the lengthy journey, a 520 day simulation has found.

"The success of human interplanetary spaceflight, which is anticipated to be in this century, will depend on the ability of astronauts to remain confined and isolated from Earth much longer than previous missions or simulations," said David Dinges of the University of Pennsylvania, who co-authored the sleep study.

"This is the first investigation to pinpoint the crucial role that sleep-wake cycles will play in extended space missions."

Six volunteers -- three Russians, two Europeans and one Chinese -- climbed down a hatch into a 550 cubic meter confinement facility in Russia on June 3, 2010 to study the psychological and medical impacts of a long-term deep space flight.

The mission was broken into three phases: 250 days for the trip to Mars, 30 days on the surface, and 240 days for the return to Earth.

More than 90 experiments were conducted, including monitoring the crew's sleep, their performance and psychological responses to the confinement to determine the impact of sleep loss, fatigue, stress, mood changes and personal conflicts.

The crew's body movements were monitored using a device on their wrist, which found that they became more sedentary as the mission progressed and they also answered weekly questionnaires.

The majority of the crew members also experienced disturbances of sleep quality, alertness deficits, or altered sleep-wake intervals and timing.

Researchers concluded that spacecraft and surface habitats will need to artificially mimic aspects of Earth's sleep-wake activity cycles, such as appropriately timed light exposure, food intake and exercise.

The findings also have implications for the increasing prevalence of sleep disorders in the general population.

The researchers noted that many people in industrial societies have sedentary lifestyles, prolonged exposure to artificial light and see their sleep patterns disrupted by school and work demands. Disrupted sleep has been linked to a number of health conditions, including obesity.

"A takeaway message from this line of research is the life-sustaining importance that healthy sleep duration and timing plays for everyone," Dinges said in a press release.

"As a global society, we need to reevaluate how we view sleep as it relates to our overall health and ability to lead productive lives. Whether it is an astronaut being challenged to reach another planet or a newborn baby just learning to walk, the human body's need for sleep is as essential as our need for food and water and integral to our ability to thrive."

The study was published in the January 7-11 edition of the Proceedings of the National Academy of Sciences.

.


Related Links
Space Tourism, Space Transport and Space Exploration News






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





SPACE TRAVEL
Captain's log: real space chat for Star Trek crew
Ottawa (AFP) Jan 7, 2013
Fact and fiction blurred this week when a real-life astronaut boldly went where no man has gone before and conversed from orbit via Twitter with the crew of television's "Star Trek: Enterprise." It started with a message from actor William Shatner, who starred as Captain Kirk in the cult sci-fi series, asking the commander of the International Space Station, Chris Hadfield: "Are you tweeting ... read more


SPACE TRAVEL
Arianespace to launch VNREDSat-1A built by Astrium for Vietnam

Arianespace says 2012 sales leapt by 30%

CSF Applauds Passage Of Risk-Sharing Regime Extension For Launch Industry

Rokot Launch Set for January 15

SPACE TRAVEL
Simulated mission to Mars reveals critical data about sleep needs for astronauts

NASA's Big Mars Rover Makes First Use Of Its Brush

Lockheed Martin Delivered Core Structure For First GOES-R Satellite

Opportunity Scores Another Dust Cleaning Event At Vermillion

SPACE TRAVEL
Mission would drag asteroid to the moon

Russia designs manned lunar spacecraft

GRAIL Lunar Impact Site Named for Astronaut Sally Ride

NASA probes crash into the moon

SPACE TRAVEL
Halfway Between Uranus and Neptune, New Horizons Cruises On

Dwarf planet Makemake lacks atmosphere

Keck Observations Bring Weather Of Uranus Into Sharp Focus

At Pluto, Moons and Debris May Be Hazardous to New Horizons Spacecraft During Flyby

SPACE TRAVEL
NASA's Hubble Reveals Rogue Planetary Orbit For Fomalhaut B

NASA, ESA Telescopes Find Evidence for Asteroid Belt Around Vega

Kepler Gets a Little Help From Its Friends

15 New Planets Hint At "Traffic Jam" Of Moons In Habitable Zone

SPACE TRAVEL
Russia develops new rocket fuel

Three key ISRO centres get new chiefs

Russia to Launch New Light Class Carrier Rocket in 2013

Russia Designs New Spaceship

SPACE TRAVEL
Mr Xi in Space

China plans manned space launch in 2013: state media

China to launch manned spacecraft

Tiangong 1 Parked And Waiting As Shenzhou 10 Mission Prep Continues

SPACE TRAVEL
Rogue asteroid a fifth bigger than thought: space agency

Herschel intercepts asteroid Apophis

Asteroid Impact Delivered Carbon To Giant Asteroid Vesta

Asteroid Impact Delivered Carbon To Giant Asteroid Vesta




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement