Featured Research

from universities, journals, and other organizations

Caffeine Intake Prevents Risk Taking After Extreme Sleep Deprivation

Date:
June 11, 2009
Source:
American Academy of Sleep Medicine
Summary:
Caffeine use prevents increased risk taking that occurs after several nights of total sleep deprivation, according to new research.

Caffeine use prevents increased risk taking that occurs after several nights of total sleep deprivation, according to a research abstract that will be presented on Wednesday, June 10, at SLEEP 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies.

Related Articles


Results indicate that despite extreme sleep deprivation, participants who had consumed caffeine did not exhibit increased risky behavior on the Balloon Analog Risk Task (BART), a computerized measure of impulsive risk-taking. Participants who received the placebo were unchanged from baseline on the cost/benefit ratio of the BART at 51 hours of sleep deprivation, but showed a significant increase in risk-taking by 75 hours. The caffeine group remained unchanged from baseline at either 51 or 75 hours of wakefulness and was significantly less risky than the placebo group at 75 hours.

According to principal investigator Maj. William D. "Scott" Killgore, PhD, research psychologist at the Harvard Medical School and Walter Reed Army Institute of Research, sleep deprivation may not have a simple linear effect on risk taking; however, there may be a 'breaking point' during which a person may show a drastic release in their ability to control or inhibit behavior. In this study, caffeine seemed to protect against that breaking point.

"People who were awake for three days straight became more impulsive and acted with less regard for consequences," said Killgore. "However, if they had consumed caffeine each night (about the equivalent of 1-2 cups of coffee every two hours from just after midnight until dawn), they showed no increase in risky behavior."

The study involved 25 healthy volunteers (21 men, 4 women) between the ages of 20 and 35 years, who were deprived of sleep for three nights. In a double-blind administration, subjects received 200 mg caffeine gum or identical placebo gum bihourly each morning from 1 a.m. to 7 a.m. during the period of sleep deprivation.

At mid-morning, subjects participated in a behavioral task of risky behavior that requires expenditure effort (BART), during which participants were asked to inflate virtual balloons on a computer and try to 'cash in' their value before they popped. The bigger the balloon, the more money it was worth.

According to Killgore, findings of this study look at the most extreme range of sleep deprivation, so most people will not experience such effects under normal circumstances. However, findings from a previous study show that people who were chronically restricted to three hours of sleep per night for a week showed a progressive increase in risk-taking behavior during the same task. Thus, it is possible that a similar 'breaking point' occurs with longer periods of chronic sleep deprivation, though further research is still necessary.


Story Source:

The above story is based on materials provided by American Academy of Sleep Medicine. Note: Materials may be edited for content and length.


Cite This Page:

American Academy of Sleep Medicine. "Caffeine Intake Prevents Risk Taking After Extreme Sleep Deprivation." ScienceDaily. ScienceDaily, 11 June 2009. <www.sciencedaily.com/releases/2009/06/090610091234.htm>.
American Academy of Sleep Medicine. (2009, June 11). Caffeine Intake Prevents Risk Taking After Extreme Sleep Deprivation. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2009/06/090610091234.htm
American Academy of Sleep Medicine. "Caffeine Intake Prevents Risk Taking After Extreme Sleep Deprivation." ScienceDaily. www.sciencedaily.com/releases/2009/06/090610091234.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
The Best Protein-Filled Foods to Energize You for the New Year

The Best Protein-Filled Foods to Energize You for the New Year

Buzz60 (Dec. 19, 2014) The new year is coming and nothing will energize you more for 2015 than protein-filled foods. Fitness and nutrition expert John Basedow (@JohnBasedow) gives his favorite high protein foods that will help you build muscle, lose fat and have endless energy. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins