MANHATTAN, KAN. -- People who decrease sitting time and increase physical activity have a lower risk of chronic disease, according to Kansas State University research.
Even standing throughout the day -- instead of sitting for hours at a time -- can improve health and quality of life while reducing the risk for chronic diseases such as cardiovascular disease, diabetes, heart disease, stroke, breast cancer and colon cancer, among others.
The researchers -- Sara Rosenkranz and Richard Rosenkranz, both assistant professors of human nutrition -- studied a sample of 194,545 men and women ages 45 to 106. The data was from the 45 and Up Study, which is a large Australian study of health and aging.
"Not only do people need to be more physically active by walking or doing moderate-to-vigorous physical activity, but they should also be looking at ways to reduce their sitting time," Richard Rosenkranz said.
The twofold approach -- sitting less and moving more -- is key to improving health, the researchers said. People often spend the majority of the day being sedentary and might devote 30 to 60 minutes a day to exercise or physical activity, Sara Rosenkranz said. Taking breaks to stand up or move around can make a difference during long periods of sitting.
Sitting for prolonged periods of time -- with little muscular contraction occurring -- shuts off a molecule called lipoprotein lipase, or LPL, Sara Rosenkranz said. Lipoprotein lipase helps to take in fat or triglycerides and use it for energy.
"We're basically telling our bodies to shut down the processes that help to stimulate metabolism throughout the day and that is not good," Sara Rosenkranz said. "Just by breaking up your sedentary time, we can actually upregulate that process in the body."
In a previous study published in the International Journal of Behavioral Nutrition and Physical Activity, the researchers found that the more people sit, the greate
|Contact: Sara Rosenkranz|
Kansas State University