Ayuh ikut jogging..
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How running jogs your memory by creating new brain cells
By Tamara Cohen
UPDATED: 08:15 GMT, 19 January 2010
jog
A regular jog leads to the growth of new cells in the area of the brain which
boosts your memory
We all know running is good for your body.
But it can also do wonders for the mind, according to Cambridge University
scientists
A regular jog leads to the growth of new cells in the area of the brain which
boosts your memory, a study has found.
It is not clear why aerobic exercise triggers the growth of grey matter (known
as neurogenesis) but it may be linked to increased blood flow or higher levels
of hormones that are released while exercising.
Timothy Bussey a behavioural neuroscientist at Cambridge and a senior author on
the study said the team studied two groups of mice, one which had umlimited
access to a running wheel while the other did not.
After a few days left alone, they put both groups of mice through a series of
memory tests on a computer screen. It displayed two identical squares side by
side, and if they nudged the one on the left with their nose they received a
sugar pellet reward, while the one on the right yielded nothing.
The mice who had been running were almost twice as successful as those in the
control group at picking the correct square.
At the start of the test, the squares were 30cm apart, but got closer and
closer together until they were almost touching.
This part of the experiment was designed to test how good the mice were at
separating two very similar memories. The human equivalent could be remembering
what a person had for dinner yesterday and the day before, or where they parked
on different trips to the supermarket.
The greatest improvement was seen in the later stages of the experiment, when
the two squares were so close they nearly touched, according to a report in the
Proceedings of the National Academy of Sciences.
The sedentary mice got steadily worse at the test because their memories became
too similar to separate.
M Bussey told the Guardian: 'At this stage of the experiment, the two memories
the mice are forming of the squares are very similar. It is when they have to
distinguish between the two that these new brain cells really make a
difference.'
He added: 'We know exercise can be good for healthy brain function, but this
work provides us with a mechanism for the effect.'
The scientists also tried to wrongfoot the mice by switching the square that
produced a food reward but the running mice were quicker to catch on when
scientists changed them around.
Wolfgang Ketterle
Nobel Prize winning physicist Wolfgang Ketterle has said running gives him time
to think through problems
The running mice clocked up an average of 15 miles (24km) a day.
Brain tissue taken from the rodents showed that the running mice had grown
fresh grey matter during the experiment.
Tissue samples from the dentate gyrus part of the brain, one of the few regions
of the adult brain which can grow new cells, revealed on average 6,000 new
brain cells had been created.
Previous studies on people with depression have found their symptoms can
improve if they exercise regularly. Some antidepressant drugs work by
encouraging the growth of new brain cells.
It is also thought exercise might also reduce stress, which inhibits new brain
cells through a hormone called cortisol.
The Cambridge researchers joined forces with colleagues at the US National
Institute on Ageing in Maryland to investigate the effect of running.A few days
of running led to the growth of hundreds of thousands of new brain cells that
improved the ability to recall memories without confusing them, a skill that is
crucial for learning and other cognitive tasks, researchers said.
Many great minds have said they enjoy a jog. Nobel Prize winning Physicist
Wolfgang Ketterle has said: 'When I run, I think about everything: physics,
family problems, plans for the weekend. I haven't made any big discoveries on a
run, but it does give me time to think through problems. Some solutions are
obvious, but they are only obvious when you are relaxed enough to find them.'
Newsnight presenter Emily Maitliss is often spotted jogging near her London
home.
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Comments (23)
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"Firstly, she is not jogging. I am in my fifties and I lift my knees far higher
than she is doing." C'mon then expert, what is she doing then? because it would
be rather difficult to have both feet off the ground if she wasn't running in
some way. I run and I barely lift my knees at all.
- Paul, Oxford, 22/1/2010 07:21
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Too risky for me. I've forget where I'm going and what for just going to the
top of the stairs - I daren't go for a run!!
- Keith, Ipswich, UK, 22/1/2010 00:09
Click to rate Rating 6
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The female featured (pictured) in the story does not enhance the report at all.
She has been included to further the goals of social engineering. Firstly, she
is not jogging. I am in my fifties and I lift my knees far higher than she is
doing. Secondly, she is not British. The last time I checked the Daily Mail was
an English newspaper. The girls facial features are close to what you might see
in Central America. The photo is likely taken from Internet Stock, and was
probably photographed in California. Thirdly, can the British press tell us why
females aged between 20 and 35 are featured in almost every scientific and/or
health related report? And lastly: in a normal society that does not constantly
tout a 'hidden agenda', a report such as this (by Tamara Cohen) would have been
supported by a photograph showing a mixed-sex group of people jogging. England
is where young women have become deities: the objects of worship. The evidence
is all around you. Open your eyes.
- Viking, Kuala Lumpur, 21/1/2010 07:14
Click to rate Rating 12
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I've run and raced competitively for the last forty-five years. I still run
about 100 km a week, almost all of it barefoot on the beach after dark, much of
it with my two nine-year old labs. Never had an injury caused by running, but
plenty from rugby in my younger days. Nor have I ever had any problem with my
joints, nor my back, caused by running, except that it's true that in my late
teens to early twenties I would develop lower back pain in a road race or
X-country competition if I started off too fast. I overcame that problem by
learning to stretch a lot more, AFTER a strenuous training session - not
before. Last time it was tested, my IQ was in the low 140s - thus unchanged
over the last thirty years. So, I've always been a fair bit brighter than
average, but I'd say my successes continue due to hard work and perseverance
rather than to sheer brain power. Smarter humans may run simply because it
thrills us. We feel more alive.
- TheTrampolinist, Cairns, Australia, 20/1/2010 12:53
Click to rate Rating 9
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It was the hunger generated by all that running that made the 'runners' more
successful at eliciting the sugar. Nothing to do with improved memory!!!
- sue, london uk, 20/1/2010 12:41
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So this is why my boyfriend tells me I have a memory like an elephant and
should be a lawyer.. because I´m a runner :)
- Kat, Marbella, 19/1/2010 20:41
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and that lass in the photo, no way is she jogging. power-walking at best. -
Bringidon, Newcastle, Both feet off the ground so she must be jogging. (You
can't achieve this with the muscles you use for walking.) - Julie, Lytham, UK,
19/1/2010 17:13 nope, soz like, but she's walking. granted that if she were in
a walking race she would be disqualified. i've seen it happen.
- Bringidon, Newcastle, England, 19/1/2010 17:24
Click to rate Rating 12
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and that lass in the photo, no way is she jogging. power-walking at best. -
Bringidon, Newcastle, Both feet off the ground so she must be jogging. (You
can't achieve this with the muscles you use for walking.)
- Julie, Lytham, UK, 19/1/2010 17:13
Click to rate Rating 7
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and that lass in the photo, no way is she jogging. power-walking at best.
- Bringidon, Newcastle, England, 19/1/2010 15:50
Click to rate Rating 11
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It could also be that, in addition to excercise, the mice which had the wheels
had parts of their brain stimulated by the process of thinking as well as by
physical excercise, as the run might have made them think about speed, the
thrill, etc, and also simply make them happier. To find out if this is an
effect, they need to divide the running mice further into two groups, ones that
ran on a 'more interesting' wheel than the others, eg it clicked or showed them
pictures of cheese while they ran . They might perform even better than the
ones who had less mental stimulation.
- Billy H, Manchester, 19/1/2010 14:24
Click to rate Rating 6
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