Silahkan coba... 


Web address:
First Brain Study Reveals Benefits Of Exercise On Quitting Smoking

ScienceDaily (Feb. 16, 2009) — Research from the University of Exeter reveals 
for the first time, that changes in brain activity, triggered by physical 
exercise, may help reduce cigarette cravings. Published in the journal 
Psychopharmacology, the study shows how exercise changes the way the brain 
processes information among smokers, thereby reducing their cravings for 
nicotine. For the first time, researchers used functional Magnetic Resonance 
Imaging (fMRI) to investigate how the brain processes images of cigarettes 
after exercise.

The study adds weight to a growing body of evidence that exercise can help 
manage addiction to nicotine and other substances. It backs up previous 
studies, which have shown that just one short burst of moderate exercise can 
significantly reduce smokers' nicotine cravings.

Ten regular smokers were asked to cycle at a moderate pace for ten minutes, 
after 15 hours of abstinence from nicotine. They were then given an fMRI scan 
while they viewed a series of 60 images. Some visuals featured cigarettes and 
would normally induce cravings in a smoker. On a second occasion, the same 
group was given an fMRI scan and shown the same series of images without having 
undertaken exercise. They were also asked to report on their cravings for 
nicotine during both phases of the study.

The brain images captured by the fMRI show a difference between the two 
conditions. After no exercise the smokers showed heightened activity in 
response to the images in areas of the brain associated with reward-processing 
and visual attention. After exercise the same areas of activation were not 
observed, which reflected a kind of 'default mode' in the brain. The smokers 
also reported lower cravings for cigarettes after exercise compared with when 
they had been inactive.

The researchers do not know exactly what caused the difference in brain 
activity following exercise. One suggestion is that completing exercise raises 
mood (possibly through increases in dopamine) which reduces the salience or 
importance of wanting a cigarette. Another possibility is that exercise causes 
a shift in blood flow to areas of the brain less involved in anticipation of 
reward and pleasure generated by smoking images.

Previous research by the University of Exeter has suggested that exercise can 
reduce nicotine cravings. Results from a series of studies show that smokers 
report reduced cigarette cravings after exercising. This study showed that 
exercise can reduce cravings when smokers are faced with images that have been 
previously shown to cause lapses in smokers trying to quit. This is the first 
time that anyone has investigated brain activity during this process.

Kate Janse Van Rensburg, a PhD student at the University of Exeter, lead author 
on the paper, said: "Our findings add to a growing body of evidence suggesting 
that exercise can help people give up smoking. This strengthens the argument 
that moderate exercise could be a viable alternative to many of the 
pharmaceutical products, such as nicotine patches, for people who want to give 
up smoking. A ten or fifteen minute walk, jog or cycle when times get tough 
could help a smoker kick the habit. There are of course many other benefits 
from a more active lifestyle including better fitness, weight loss and improved 

Kate Janse Van Rensburg carried out this study as part of her PhD with the 
University of Exeter's School of Sport and Health Sciences and School of 

Journal reference:

   1. Janse Van Rensburg et al. Acute exercise modulates cigarette cravings and 
brain activation in response to smoking-related images: an fMRI study. 
Psychopharmacology, 2008; DOI: 10.1007/s00213-008-1405-3

Adapted from materials provided by University of Exeter.
Email or share this story:  
Need to cite this story in your essay, paper, or report? Use one of the 
following formats:

University of Exeter (2009, February 16). First Brain Study Reveals Benefits Of 
Exercise On Quitting Smoking. ScienceDaily. Retrieved February 16, 2009, from­ /releases/2009/02/090210092738.htm

Jusfiq Hadjar gelar Sutan Maradjo Lelo

Allah yang disembah orang Islam tipikal dan yang digambarkan oleh al-Mushaf itu 
dungu, buas, kejam, keji, ganas, zalim lagi biadab hanyalah Allah fiktif.


Kirim email ke