Napping a more effective countermeasure to sleepiness in younger people

Dec 01, 2007

Coffee is an effective countermeasure to sleepiness for both young and middle-aged people. However, napping is more efficient in young than in middle-aged people, according to a study published in the December 1 issue of the journal SLEEP.

Patricia Sagaspe, PhD, of the Clinique du Sommeil at CHU Pellegrin in Bordeau, France, studied 24 people, 12 young (between 20-25 years of age) and 12 middle-aged (between 40-50 years of age). Participants first drove 125 highway miles in the daylight, between 6:00 and 7:30 p.m. Then, in a test of the effects of coffee and napping on night-time driving, participants drove another 125 miles between 2:00 and 3:30 a.m. after having a cup of coffee with 200 mg of caffeine, a placebo (a cup of decaffeinated coffee with 15 mg of caffeine) or a 30-minute nap.

Inappropriate line crossings, self-perceived fatigue and sleepiness and polysomnographic recordings were analyzed in the study.

According to the results, compared to daytime, after a placebo, the number of inappropriate line crossings was significantly increased. Compared with a placebo, both coffee and napping reduced the risk of inappropriate line crossings in young and middle-aged participants. A significant interaction between age and condition showed that napping led to fewer inappropriate line crossings in younger than in middle-aged participants. During napping, young participants slept more and had more delta sleep than middle-aged participants.

Self-perceived sleepiness and fatigue did not differ between age groups, but coffee improved sleepiness, whereas napping did not.

"The potential effect of age on response to sleepiness countermeasures should be considered in populations exposed to extended wakefulness," said Dr. Sagaspe. "According to their age or individual physiology, subjects should implement their best countermeasures to sleepiness at the wheel."

On average, most adults need seven to eight hours of sleep each night to feel alert and well-rested.

The American Academy of Sleep Medicine (AASM) offers the following tips on how to get a good night's sleep:

-- Avoid foods or drinks that contain caffeine, as well as any medicine that has a stimulant, prior to bedtime.
-- Follow a consistent bedtime routine.
-- Establish a relaxing setting at bedtime.
-- Get a full night's sleep every night.
-- Do not go to bed hungry, but don't eat a big meal before bedtime either.
-- Avoid any rigorous exercise within six hours of your bedtime.
-- Make your bedroom quiet, dark and a little bit cool.
-- Get up at the same time every morning.

Those who believe they have a sleep disorder should consult with their primary care physician or a sleep specialist.

Source: American Academy of Sleep Medicine

Explore further: 'Ice Bucket Challenge' passes $100 mn mark

add to favorites email to friend print save as pdf

Related Stories

Sleepy connected Americans

Mar 07, 2011

The 2011 Sleep in America poll released today by the National Sleep Foundation (NSF) finds pervasive use of communications technology in the hour before bed. It also finds that a significant number of Americans aren't getting ...

Blood pressure management: Sleep on it

Feb 28, 2011

A daytime sleep could have cardiovascular benefits according to new research by Ryan Brindle and Sarah Conklin, PhD, from Allegheny College in Pennsylvania in the US. Their study, looking at the effect of a daytime nap on ...

The high price of sleep disorders

Dec 17, 2010

Danish sleep researchers at the University of Copenhagen and the Danish Institute for Health Services Research have examined the socio-economic consequences of the sleep disorder hypersomnia in one of the largest studies ...

Drowsy driving crashes preventable

Nov 11, 2010

Today kicks off Drowsy Driving Prevention Week, a National Sleep Foundation public awareness campaign to educate drivers about sleep safety. The AAA Foundation for Traffic Safety released a new study showing ...

Recommended for you

Cold cash just keeps washing in from ALS challenge

Aug 28, 2014

In the couple of hours it took an official from the ALS Association to return a reporter's call for comment, the group's ubiquitous "ice bucket challenge" had brought in a few million more dollars.

Medtronic spends $350M on another European deal

Aug 27, 2014

U.S. medical device maker Medtronic is building stronger ties to Europe, a couple months after announcing a $42.9 billion acquisition that involves moving its main executive offices across the Atlantic, where it can get a ...

Mind over matter for people with disabilities

Aug 26, 2014

People with serious physical disabilities are unable to do the everyday things that most of us take for granted despite having the will – and the brainpower – to do so. This is changing thanks to European ...

User comments : 0