fuyumi

CHRONIC sleep deprivation can do more than leave you short-tempered, it can also stress your heart and raise your risk of cardiovascular disease and death, according to a study released on Wednesday.

The neurological and behavioural effects of long-term sleep loss have been well-documented, ranging from lowered concentration and hand-eye coordination to poor mood.

But the study by researchers at the University of Pennsylvania School of Medicine adds to a growing body of evidence that there is also a physiological price to be paid for insufficient time under the sheets.

The study found that a sleep deficit built up over just five nights can significantly impair heart function.

The researchers tested the cardiac function of their 39 volunteers twice - once at the beginning of the study, after a night of 10 hours' sleep, and again after five nights when they got a mere five hours of shut-eye each night.

The electrocardiograms revealed that all of the volunteers had a much faster heart beat and significantly less heart rate variability following the nights of sleep deprivation.

Heart rate variability describes the naturally occurring beat-to-beat changes in heart rate which reflect the body's adjustment to a host of stresses and stimuli.

Reduced variability can be a marker for cardiac problems and other diseases and has been linked to high blood pressure.

'If our finding is sustained by a larger group and further analysis, it may suggest why short sleep duration is associated with a heightened risk of cardiovascular disease and mortality,' said Dr Siobhan Banks, a lead author on the study.

The findings are consistent with previous research showing that shift workers are at higher risk for cardiovascular disease due to the fact that they get less sleep because of the disruption in their circadian or sleep-wake rhythms.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

xiaopillow-

wah. this news shld be shot at those who game 24hrs+ de..

anti-soccerplayerswhoinvadethebballcourt D:

novan

(,") ----- A S|mp|e 'Thanks' Mot|vates Us To Share More ----- (",)

d('-')b ----- My Favour|te On|ine Prof|tab|e Freeb|es ----- d('-')b
$$$
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
$$$

(,") ------ Visit My Property Website @
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
------ (",)

(,") ------ Visit My Personal Website @
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
------ (",)


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Fool

actually its quite common sense right insufficient sleep isnt healthy in the first place.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Posting Rules
You may not use more than 50 lines.
You may not use font sizes larger than 2.
You may not use more than 20 images.
· 700w x 700h pixels, 488.3 KB (combined).
You may not use the following vB codes: [php], [code], [html].

vB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

seacsub

According to those who practice mediation, 4-5hrs is more than enough for a nights amount of rest as the rest of the sleeping time involves REM (rapid eye movement) and is therefore useless for an effective night.

Lol, besides, I don't remember getting more than 5hrs when i was in NS during my BMT. :devil2:

I do agree that sleep deprivation does make you short-tempered as I've experienced it before. Not so sure about the rest though. Just my 2 cents.

wenchong1985

like japan la, work til death

The Secret of our Esplanade:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




A site for all Final Fantasy series lovers

New updates: Singapore Cosplay Festival Photo Gallery

in
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

shingshing

Yalo, I agree too. Like wake up everyday like zombie shiok meh. Stressful lifestyle here so all e more must take care of health ar.

ken-nerves

ya.. if i get less than 6-7 hrs of sleep, i will get sore eyes..

ashfire

how is enough is indeed hard to measure... some require more than others.. i guess the lesson from the report is that one ought to get sufficient sleep, rest when its time to rest, and not push your body over the limits...

genzo2106

well guess is high time to remind everyone arnd us to have sufficient sleep..

Life is full of ups and downs. But one has to learn how to stand up on his own and continue his path to attaining enlightment...:mellow3: :mellow3:

My articles at HELIUM:mellow3:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

id_peace

I only sleep 6 hours a day.. I am going to die le... :cry3: heaven here i come

vivi

but sleep more...then become more sleepy ler....