December 3, 2012 - THE health studies that conclude that people should sit less, and get up and move around more, have always struck me as fitting into the â€śwell, duhâ€ť category.
But a closer look at the accumulating research on sitting reveals something more intriguing, and disturbing: the health hazards of sitting for long stretches are significant even for people who are quite active when theyâ€™re not sitting down. That point was reiterated recently in two studies, published in The British Journal of Sports Medicine
and in Diabetologia, a journal of the European Association for the Study of Diabetes.
Suppose you stick to a five-times-a-week gym regimen, as I do, and have put in a lifetime of hard cardio exercise, and have a resting heart rate thatâ€™s a significant fraction below the norm. That doesnâ€™t inoculate you, apparently, from the perils of sitting.
The research comes more from observing the health results of peopleâ€™s behavior than from discovering the biological and genetic triggers that may be associated with extended sitting. Still, scientists have determined that after an hour or more of sitting, the production of enzymes that burn fat in the body declines by as much as 90 percent. Extended sitting, they add, slows the bodyâ€™s metabolism of glucose and lowers the levels of good (HDL) cholesterol in the blood. Those are risk factors toward developing heart disease and Type 2 diabetes.
â€śThe science is still evolving, but we believe that sitting is harmful in itself,â€ť says Dr. Toni Yancey, a professor of health services at the University of California, Los Angeles.
Yet many of us still spend long hours each day sitting in front of a computer.
The good news is that when creative capitalism is working as it should, problems open the door to opportunity. New knowledge spreads, attitudes shift, consumer demand emerges and companies and entrepreneurs develop new products. That process is under way, addressing what might be called the sitting crisis. The results have been workstations that allow modern information workers to stand, even walk, while toiling at a keyboard.
Dr. Yancey goes further. She has a treadmill
desk in the office and works on her recumbent bike at home.
If there is a movement toward ergonomic diversity and upright work in the information age, it will also be a return to the past. Today, the diligent worker tends to be defined as a person who puts in long hours crouched in front of a screen. But in the 19th and early 20th centuries, office workers, like clerks, accountants and managers, mostly stood. Sitting
was slacking. And if you stand at work today, you join a distinguished lineage â€” Leonardo da Vinci, Ben Franklin, Winston Churchill, Vladimir Nabokov
and, according to a recent profile in The New York Times, Philip Roth.
DR. JAMES A. LEVINE of the Mayo Clinic is a leading researcher in the field of inactivity studies. When he began his research 15 years ago, he says, it was seen as a novelty.
â€śBut itâ€™s totally mainstream now,â€ť he says. â€śThereâ€™s been an explosion of research in this area, because the health care cost implications are so enormous.