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sleep effect

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Posted by: assassin

Any body here got any good studies or scientific researches on the effect of proper sleep on Metabolism , fat loss , physical improvements...

my sleeping hours are messed up usually as I go to bed late most of the times and wake up late at morning or even at noon , would that have a big effect on my diet ... I noticed that my progress Is slowing down so much so I thought that maybe my sleeping hours Is the main reason.

thanx for your reply


Posted by: Emma-Leigh

http://www.physorg.com/news67756058.html
http://www.health.com/health/article...223753,00.html
http://www.physorg.com/news72978010.html
http://www.medicalnewstoday.com/medi...p?newsid=43970
http://www.healthology.com/diet/video2957.htm


Posted by: John69

Lifestyle has alot of factor on growth hormones. ex: sunlight, stress, sleep, eating habbits, etc.


Posted by: assassin

thnx mod


Posted by: assassin

I read them all but they are all about sleep deprivation , nothing about 'sleeping at night vs sleeping at the morning' I'm trying to google it


Posted by: Witchblade

Quote:
Originally Posted by assassin View Post
I read them all but they are all about sleep deprivation , nothing about 'sleeping at night vs sleeping at the morning' I'm trying to google it
Trouble once made a lengthy post about the negative effects of disturbed sleeping patterns. Try searching it.


Posted by: John69

adequate sleep is vital to optimizing hormone levels. no amount of daytime sleep can substitute for a good night's sleep. growth hormone status is especially dependent on sleep, because a major growth hormone surge occours during the first episode of slow-wave sleep, approximately 30-70minutes after sleep on set. Disturbed or interrupted sleep can cause growth hormone output to be reduced or aborted. therefore, not merely sleep, but sound sleep, is essential to maximizing growth hormone release.


Posted by: Emma-Leigh

Quote:
Originally Posted by assassin View Post
I read them all but they are all about sleep deprivation , nothing about 'sleeping at night vs sleeping at the morning' I'm trying to google it
If you are a teenager then it is likely your sleep rhythm is shifted anyway (it is known that in the late teenage years your melatonin secretion 'shifts' so that you are, what can be termed, a 'night owl'....)... So it means you don't naturally FEEL like sleep until LATE in the evening and also that you don't wake up until mid-morning...

And this is completely natural and NOT going to be having an impact on weight...


Posted by: Tom_B

Hmmm...
Emma Most of those studies suggest that people that don't get enough sleep gain their weight because a lack of sleep will generally mean:
1/ Increased caloric intake
2/ Decreased NEAT metabolism.

However, What if you took a perfectly active individual who got 8 hours of sleep a night but then reduced that to 4 hours a night while maintaining their NEAT activity as well as calorie level, what kind of effect would that have? Would their be an increase in metabolism?
I thought I read in some sort of study that when they induced sleep deprivation in rats, the rats actually LOST weight even after they started feeding the rats more calories. Eventually the rats all died though..


Posted by: Witchblade

Well the longer you're active the more calories you burn of course.


Posted by: assassin

Quote:
Originally Posted by Emma-Leigh View Post
If you are a teenager then it is likely your sleep rhythm is shifted anyway (it is known that in the late teenage years your melatonin secretion 'shifts' so that you are, what can be termed, a 'night owl'....)... So it means you don't naturally FEEL like sleep until LATE in the evening and also that you don't wake up until mid-morning...

And this is completely natural and NOT going to be having an impact on weight...
I hope you are true , I always fail to sleep early ..... and I always hear that It's bad for your health....


Posted by: Emma-Leigh

Quote:
Originally Posted by assassin View Post
I hope you are true , I always fail to sleep early ..... and I always hear that It's bad for your health....
MORE READING STUFF HERE:
http://www.sleepdisordersguide.com/teen-sleep.html
http://www.medicinenet.com/script/ma...ticlekey=52143
http://www.ninds.nih.gov/disorders/b...p.htm#how_muchhttp://www.nationalreviewofmedicine....ture04_15.html
http://www.the-scientist.com/article/display/12236/
http://science.qj.net/Circadian-Rhyt...g/49/aid/64385
http://lahabra.seniorhigh.net/pages/...NeedSleep.html


Posted by: zl214

i found a few abstracts, they are pretty reliable.

http://www.ncbi.nlm.nih.gov/entrez/q...=pubmed_DocSum

http://www.ncbi.nlm.nih.gov/entrez/q...=pubmed_docsum

http://www.ncbi.nlm.nih.gov/entrez/q...=pubmed_DocSum

http://www.ncbi.nlm.nih.gov/entrez/q...=pubmed_DocSum


Posted by: mrmark

Quote:
Originally Posted by Emma-Leigh View Post
If you are a teenager then it is likely your sleep rhythm is shifted anyway (it is known that in the late teenage years your melatonin secretion 'shifts' so that you are, what can be termed, a 'night owl'....)... So it means you don't naturally FEEL like sleep until LATE in the evening and also that you don't wake up until mid-morning...

And this is completely natural and NOT going to be having an impact on weight...
wow I've never heard that before. That's pretty intersting and explains a lot.


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sleep effect


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