Navigation Links
MU study finds that sitting may increase risk of disease
Date:11/19/2007

COLUMBIA, Mo. Most people spend most of their day sitting with relatively idle muscles. Health professionals advise that at least 30 minutes of activity at least 5 days a week will counteract health concerns, such as cardiovascular disease, diabetes and obesity that may result from inactivity. Now, researchers at the University of Missouri-Columbia say a new model regarding physical activity recommendations is emerging. New research shows that what people do in the other 15 and a half hours of their waking day is just as important, or more so, than the time they spend actively exercising.

Many activities like talking on the phone or watching a childs ballgame can be done just as enjoyably upright, and you burn double the number of calories while youre doing it, said Marc Hamilton, an associate professor of biomedical sciences whose work was recently published in Diabetes. Were pretty stationary when were talking on the phone or sitting in a chair at a ballgame, but if you stand, youre probably going to pace or move around.

In a series of studies that will be presented at the Second International Congress on Physical Activity and Public Health in Amsterdam, Hamilton, Theodore Zderic, a post-doctoral researcher, and their research team studied the impact of inactivity among rats, pigs and humans. In humans, they studied the effects of sitting in office chairs, using computers, reading, talking on the phone and watching TV. They found evidence that sitting had negative effects on fat and cholesterol metabolism. The researchers also found that physical inactivity throughout the day stimulated disease-promoting processes, and that exercising, even for an hour a day, was not sufficient to reverse the effect.

There is a misconception that actively exercising is the only way to make a healthy difference in an otherwise sedentary lifestyle. However, Hamiltons studies found that standing and other non-exercise activities burn many calories in most adults even if they do not exercise at all.

The enzymes in blood vessels of muscles responsible for fat burning are shut off within hours of not standing, Hamilton said. Standing and moving lightly will re-engage the enzymes, but since people are awake 16 hours a day, it stands to reason that when people sit much of that time they are losing the opportunity for optimal metabolism throughout the day.

Hamilton hopes that creative strategies in homes, communities and workplaces can help solve the problem of inactivity. Some common non-exercise physical activities that people can do instead of sitting include performing household chores, shopping, typing while standing and even fidgeting while standing. Given the work of muscles necessary to hold the bodys weight upright, standing can double the metabolic rate. Hamilton believes that scientists and the public have underestimated common activities because they are intermittent and do not take as much effort as a heavy workout.

To hold a body that weighs 170 pounds upright takes a fair amount of energy from muscles, Hamilton said. You can appreciate that our legs are big and strong because they must be used all the time. There is a large amount of energy associated with standing every day that cant be easily compensated for by 30 to 60 minutes at the gym.

Only 28 percent of Americans are getting the minimal amount of recommended exercise. Hamilton predicts that eventually there will be health campaigns with doctors advocating limiting sitting time, just like they ask people to limit sun and second hand smoke exposure.

The purpose of medical research is to offer effective new strategies for people whom the existing therapies are not working, Hamilton said. Because our research reveals that too little exercise and excessive sitting do not change health by the same genes and biological mechanisms, it offers hope for people who either are not seeing results from exercise or can not exercise regularly. The lifestyle change we are studying is also unlike exercise because it does not require that people squeeze an extra hour into their days and/or get sweaty at the gym, but instead improving the quality of what they already are doing. One misrepresentation is that people tend to say 'I sit all the time, so your studies suggest that I can't even work,' but Ben Franklin and Thomas Jefferson showed us that you can be very productive and still do great work in an office with a 'standing' desk."


'/>"/>

Contact: Christian Basi
BasiC@missouri.edu
573-882-4430
University of Missouri-Columbia
Source:Eurekalert

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. A study by the MUHC and McGill University opens a new door to understanding cancer
3. Study begins to reveal clues to the cause and progression of sepsis
4. Clones on task serve greater good, evolutionary study shows
5. New study warns limited carbon market puts 20 percent of tropical forest at risk
6. New study examines how rearing environment can alter navigation
7. Study links cat disease to flame retardants in furniture and to pet food
8. New continent and species discovered in Atlantic study
9. Study shows link between alcohol consumption and hiv disease progression
10. Feeling hot, hot, hot: New study suggests ways to control fever-induced seizures
11. Study finds environmental tests help predict hospital-acquired Legionnaires disease risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2017)... The Controller General of Immigration from Maldives Mr. Mohamed ... received the prestigious international IAIR Award for the most innovative high security ... ... Maldives Immigration Controller General, ... picture on the right) have received the IAIR award for the "Most ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based and ... 2022", published by MarketsandMarkets, the market is expected to be worth USD 18.98 ... Continue Reading ... ...      ...
(Date:3/22/2017)...   Neurotechnology , a provider of high-precision ... the release of the SentiVeillance 6.0 ... recognition using up to 10 surveillance, security and ... new version uses deep neural-network-based facial detection and ... a Graphing Processing Unit (GPU) for enhanced speed. ...
Breaking Biology News(10 mins):
(Date:7/26/2017)... ... July 26, 2017 , ... ... towards leveraging the years of diagnostic excellence by Mayo Clinic and the experience ... product suite will be distributed through the Microsoft Azure platform and will focus ...
(Date:7/25/2017)... ... July 25, 2017 , ... ... Heinz as Executive Director of Strategic Planning. His extensive background in consulting, ... Chuck’s professional experience encompasses marketing and differentiation consulting, business strategy development, new ...
(Date:7/24/2017)... FL (PRWEB) , ... July ... ... Strategic Analyst, Kenny Soulstring, today announced that the stock market news outlet ... in risk assessment diagnostic testing that screens and identifies exposure, progression and ...
(Date:7/20/2017)... ... July 20, 2017 , ... VIC Technology Venture Development™ (VIC™), is ... directors. This addition continues to strengthen and diversify VIC’s board. , "We are ... “He is a highly accomplished business executive with a broad range of experience directly ...
Breaking Biology Technology: