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Review Study Explores Causes of Physical Inactivity

Study results may lead to personalized prevention and treatment for chronic disease

Bethesda, Md. (October 4, 2017)—A new review of more than 500 studies examines the environmental and physiological causes of physical inactivity and the role it plays in the development of chronic disease. The article is published in Physiological Reviews.

“Physical inactivity is an actual cause of over 35 chronic diseases [and] conditions, with evidence from studies that physically inactive groups have increased prevalence,” wrote the research team that conducted the literature review. The researchers were from the University of Missouri, University of Kansas Medical Center and VA Greater Los Angeles Healthcare System. The World Health Organization reports that the combination of sedentary behavior and poor diet is the second leading cause of death in the U.S. Additionally, 86 percent of people in the U.S. fail to meet recommended guidelines for daily exercise—a phenomenon that has been on an upward curve since the advent of “power-driven machines and motorized transportation,” the researchers noted.

People who are not active may be up to 50 percent more likely to develop conditions that are considered major causes of death, such as heart disease, type 2 diabetes and Alzheimer’s disease. In addition, prolonged inactivity affects numerous bodily functions, such as:

  • cardiovascular fitness;
  • bone density;
  • nervous system function;
  • muscle strength; and
  • cognition.

Among other findings, the reviewed studies showed that inactivity and activity operate on different molecular pathways. Understanding these differences, the researchers explained, may help pave the way for better, more personalized prevention tools and treatment options—including individualized exercise prescriptions, medications and targeted gene therapy.

“It is important that the public understand that physical inactivity itself is underappreciated in the toll it takes on the health, quality of life and health care costs of U.S. citizens and individuals around the world,” the research team wrote. “By increasing physical activity levels in children and adults, we can ameliorate the physical, emotional and economic burden that occurs among inactive people in our society.”

Read the full article, “Role of inactivity in chronic diseases: evolutionary insight and pathophysiological mechanisms,” published in the October issue of Physiological Reviews.

NOTE TO JOURNALISTS: To schedule an interview with a member of the research team, please contact the APS Communications Office or 301-634-7209. Find more research highlights in the APS Press Room.

Physiology is the study of how molecules, cells, tissues and organs function in health and disease. Established in 1887, the American Physiological Society (APS) was the first U.S. society in the biomedical sciences field. The Society represents more than 10,500 members and publishes 15 peer-reviewed journals with a worldwide readership.

 


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