Sedentary life 'speeds up ageing'

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Leading a sedentary lifestyle may make us genetically old before our time, a study suggests.

A study of twins found those who were physically active during their leisure time appeared biologically younger than their sedentary peers.

The researchers found key pieces of DNA called telomeres shortened more quickly in inactive people. It is thought that could signify faster cellular ageing.
The King's College London study appears in Archives of Internal Medicine.

An active lifestyle has been linked to lower rates of cardiovascular disease, type 2 diabetes and cancer.

However, the latest research suggests that inactivity not only makes people more vulnerable to disease, but may actually speed up the ageing process itself.

The King's team studied 2,401 white twins, asking them to fill out questionnaires on their level of physical activity, and taking a blood sample from which DNA was extracted.

They particularly focused on telomeres, the repeat sequences of DNA that sit on the ends of chromosomes, protecting them from damage.

As people age, their telomeres become shorter, leaving cells more susceptible to damage and death.

Examining white blood cells from the immune system in particular, the researchers found that, on average, telomeres lost 21 component parts - called nucleotides - every year.
But men and women who were less physically active in their leisure time had shorter leukocyte telomeres compared to those who were more active.

The average telomere length in those who took the least amount of exercise - 16 minutes of physical activity a week - was 200 nucleotides shorter than those who took the most exercise - 199 minutes of physical activity a week, such as running, tennis or aerobics.

The most active people had telomeres of a length comparable to those found in inactive people who were up to 10 years' younger, on average.

Direct comparison of twins who had different levels of physical activity produced similar results.

Impact of stress

The researchers suggest that physically inactive people may be more vulnerable to the damage caused to cells by exposure to oxygen, and to inflammation.

Stress is also thought to have an impact on telomere length, and the researchers suggest people who exercise regularly may help to reduce their stress levels.

Writing in the journal, the researchers said: "Our results show that adults who partake in regular physical activity are biologically younger than sedentary individuals.

"This conclusion provides a powerful message that could be used by clinicians to promote the potential anti-ageing effect of regular exercise."

In an accompanying editorial, Dr Jack Guralnik, of the US National Institute on Aging, said more work was needed to show a direct relationship between ageing and physical activity.

He said: "Persons who exercise are different from sedentary persons in many ways, and although certain variables were adjusted for in this analysis, many additional factors could be responsible for the biological differences between active and sedentary persons.
"Nevertheless, this article serves as one of many pieces of evidence that telomere length might be targeted in studying ageing outcomes."

Is sex active enough?
What you trying to say"sex is best"?
It depends on the type of sex Praxius. It can be great cardio and toning work if done vigorously enough and with enough variety.
The problem with sex exercise is that it requires two to do it!!
So, I guess, I'll go out and move snow!!!
No I was wondering if when they refer to being active, rather then being lazy and not moving, is a good 60 mins or more of sex active enough?
Of all my relations I like sex best
60 MINS??? wow.... I know the wrong guys...lmao
Sex, is it active enough? Yea Id say its pretty good work out..... but...I dont think anyone should just rely on sex for their activity.....

Run and work on cardio, work out...and then your sex will be better and least mine is....But maybe its natural...I mean Iam pretty much a god...
So Nova Scotia hey? Perhaps I'll take a trip out there this summer...
I think iam going to start a work out program....
lol.... my mind jumped forward to men hiring themselves out to housewives as 'trainers'... setting up a rigorous workout program for them... lol. Oh boy.
hahah thats a great idea...thanks :P.......
I hope the pay will be good.
Quote: Originally Posted by jennView Post

60 MINS??? wow.... I know the wrong guys...lmao

Well that's also including foreplay and just rounded up/down to 60 mins.

It could be more or less.
Quote: Originally Posted by karrieView Post

lol.... my mind jumped forward to men hiring themselves out to housewives as 'trainers'... setting up a rigorous workout program for them... lol. Oh boy.

Yeah sorry, I'm not currently accepting any new clients at the moment.
Praxius, I hate people who brag (not accepting anymore..)

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