Featured Research

from universities, journals, and other organizations

Chewing Tobacco Hampers Ability To Perform Complex Tasks

Date:
November 17, 1999
Source:
Center For The Advancement Of Health
Summary:
The nicotine in smokeless tobacco reduces an individual's ability to perform complex tasks that require hand and body movements to adjust to new visual feedback, according to new research.

The nicotine in smokeless tobacco reduces an individual's ability to perform complex tasks that require hand and body movements to adjust to new visual feedback, according to new research.

Related Articles


During a visuo-motor task, smokeless tobacco users exhibited slower learning and adjustment to new requirements, more jerks, slower and more irregular movements, and less accurate overall performance compared to non-smokers.

"Our results suggest that tobacco use on the job can reduce an individual's capability to learn new visuo-motor mapping and adapt his or her performance to new visual feedback," said lead author Jose Contreras-Vidal, Ph.D., University of Maryland Department of Kinesiology.

Participants were tested individually for approximately two hours on three separate tasks that required drawing the straightest possible path as quickly as possible from a central point on a computer screen to a target that lit up in one of four different positions on the edges of the screen. The results of the study conducted by researchers at the University of Maryland and Arizona State University appear in the November issue of Nicotine & Tobacco.

The first baseline task was performed by 10 tobacco users after at least eight hours of tobacco abstinence, and by 11 non-users. No differences in performance were found between the two groups on this trial.

Tobacco users then were given a pinch of smokeless tobacco immediately before the second test, in which the feedback screen was rotated by 45 degrees. Tobacco chewers performed this task significantly below the level of non-users on accuracy and smoothness of movements. Non-smokers greatly reduced the jerkiness of their movements between sessions one and two, while tobacco users did not.

The third test, a post-adaptation session, was identical with the first. It was intended to measure readaptation following the 45 degree rotation of targets in the second session. Non-users continued to improve the smoothness of their movements in this session, but tobacco chewers did not.

The research was supported by the Smokeless Tobacco Research Council.


Story Source:

The above story is based on materials provided by Center For The Advancement Of Health. Note: Materials may be edited for content and length.


Cite This Page:

Center For The Advancement Of Health. "Chewing Tobacco Hampers Ability To Perform Complex Tasks." ScienceDaily. ScienceDaily, 17 November 1999. <www.sciencedaily.com/releases/1999/11/991117050042.htm>.
Center For The Advancement Of Health. (1999, November 17). Chewing Tobacco Hampers Ability To Perform Complex Tasks. ScienceDaily. Retrieved February 26, 2015 from www.sciencedaily.com/releases/1999/11/991117050042.htm
Center For The Advancement Of Health. "Chewing Tobacco Hampers Ability To Perform Complex Tasks." ScienceDaily. www.sciencedaily.com/releases/1999/11/991117050042.htm (accessed February 26, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Thursday, February 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Sleeping Too Much Or Too Little Might Increase Stroke Risk

Sleeping Too Much Or Too Little Might Increase Stroke Risk

Newsy (Feb. 26, 2015) People who sleep more than eight hours per night are 45 percent more likely to have a stroke, according to a University of Cambridge study. Video provided by Newsy
Powered by NewsLook.com
Mayor Says District of Columbia to Go Ahead With Pot Legalization

Mayor Says District of Columbia to Go Ahead With Pot Legalization

Reuters - News Video Online (Feb. 25, 2015) Washington&apos;s mayor says the District of Columbia will move forward with marijuana legalization, despite pushback from Congress. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Marijuana Nowhere Near As Deadly As Alcohol: Study

Marijuana Nowhere Near As Deadly As Alcohol: Study

Newsy (Feb. 25, 2015) A new study says marijuana is about 114 times less deadly than alcohol. Video provided by Newsy
Powered by NewsLook.com
Researchers Replace Damaged Hands With Prostheses

Researchers Replace Damaged Hands With Prostheses

Newsy (Feb. 25, 2015) Scientists in Austria have been able to fit patients who&apos;ve lost the use of a hand with bionic prostheses the patients control with their minds. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins