This has been covered before: Reverse the harm of sitting: 5 min walk
If you generally eat a heart-healthy diet, then you might have one fewer factor to worry about: the “glycemic index” of the carbs you eat, new research suggests.
In a new study, researchers looked at how people’s health is affected by the types of carbs they eat, using one measure of carbohydrates called the glycemic index. This index is a number, between 1 and 100, that reflects how much a given carb raises your blood sugar levels. For example, carbs such as apples and oatmeal have a low glycemic index, meaning they raise blood sugar less than carbs with a higher glycemic index, such as white bread and corn flakes.
The researchers at Johns Hopkins University School of Medicine and Harvard Medical School set out to examine whether healthy diets with a low glycemic index would provide more heart health benefits compared with similarly healthy diets that have a higher glycemic index.
Source: ‘Bad Carbs’ May Not Be That Bad
I wish the sample size were larger, but the results are interesting.
Medical researchers have been steadily building evidence that prolonged sitting is awful for your health. And that’s before getting to Deep Vein Thrombosis (DVT) and/or Pulmonary Embolism (PE) sufferers.
Sitting for long periods of time, like many people do daily at their jobs, is associated with risk factors such as higher cholesterol levels and greater waist circumference that can lead to cardiovascular and metabolic disease. When people sit, slack muscles do not contract to effectively pump blood to the heart. Blood can pool in the legs and affect the endothelial function of arteries, or the ability of blood vessels to expand from increased blood flow.
…The researchers were able to demonstrate that during a three-hour period, the flow-mediated dilation, or the expansion of the arteries as a result of increased blood flow, of the main artery in the legs was impaired by as much as 50 percent after just one hour. The study participants who walked for five minutes for each hour of sitting saw their arterial function stay the same — it did not drop throughout the three-hour period. Thosar says it is likely that the increase in muscle activity and blood flow accounts for this.
It’s so crazy, it might just work…
This also lends credence to why DVTs happen on long distance travel, discounting what I never believed: the air mixture in planes was responsible. Since my original diagnosis, I’ve been told to take breaks and walk when driving or flying long distances (basically over an hour) to prevent future problems…