Published: May 8, 2014
Link: http://www.latimes.com/science/sciencenow/la-sci-sn-exercise-snack-20140508-story.html
Summary:
A little intense exercise could be a good plan to help people control their blood sugars. Researchers say that a brief intense exercise is more effective than daily 30 minute workout at reduced glucose concentrations for insulin resistant people.
This finding eventually made it to European Assn. for the Study of Diabetes. Researcher Monique Francois, of the University of Otago, Dunedin, New Zealand, said that lowering the amount of post meal spikes of hyperglycemia(high amount of glucose with little insulin in blood) can reduce the risk of developing type 2 diabetes and its side affects.
The scientists got 2 women and 7 men ages 18 to 55. They all were insulin resistant and were not taking diabetes or heart medication. The mean BMI was 36, which is obese. Type 2 diabetes was detected in 2 of the people.
More people are getting type 2 diabetes and insulin resistance worldwide. Exercise and control of diet are the cheapest and mose effective ways to combat them. Less than 10% of Americans and 20% of British adults are meeting the actively recommendations. Many of those people use lack of time as a reason.
The scientists made 3 plans. The 3 plans involved people exercising 30 minutes before their dinner. The first one was making a person quickly walking up an incline before dinner at 60% of maximum heart rate. The second one was making the same person walk intensely for 6 one minute bursts at 90% of heart rate. The third one was making the person walk intensely with 6 one minute exercises. The exercises was alternating resistance training and incline walking.
As a result, the second and third plans reduced blood sugar levels. These exercise plans reduced blood sugar by 17% in comparison to not exercising before breakfast. These exercise plans also reduced blood sugars by 13% in comparison to the regular exercise plans. The researchers said that the effects at lunch were unclear.
With these plans, people can both benefit from exercise as well as still preserving time for other activities.
Relevance:
Relevance:
The relevance of this article to the studies of biology class because this article discusses about how to help people with diabetes. In Chapter 32, the text book talks about diabetes. Diabetes is a condition that decreases amount of insulin produced in the blood. This insulin cannot then break down glucose and cannot give the cells the food that they need. Therefore, the cells cannot produce energy with sugars and have to use fats and proteins. There are 2 types of diabetes. Type 1 diabetes, white blood cells attack pancreas cells, which then cannot do its job. Type 2 diabetes, the cells fail to respond to insulin. Even though diabetes cannot be treated. It can be controlled by exercise like the article states. It an also be controlled by managing sugar intake.
How does the pre-meal exercise plan prevent diabetes in healthy individuals? More fundamentally, how can a healthy individual with no genetic or immune disposition, even get either diabetes types (if possible)?
ReplyDeleteSimilar to Mayank's question, but more specifically: How do obesity and high blood sugar spikes cause cells, specifically, to stop responding properly to insulin?
ReplyDeleteTo Sarah's question: Scientists have discovered that fat cells release a protein called pigment epithelium-derived factor (PEDF). They found the release of this protein is an important link among the dominoes that fall and lead to a person developing type 2 diabetes. when this novel protein is released into the bloodstream, it causes the liver and muscles to become desensitized to insulin. Insulin causes cells to take up glucose in the bloodstream, store it and convert it to energy for the body. When the cells resist insulin due to excess fat, more insulin is then produced by the pancreas to counteract the negative effects, thereby overworking the pancreas and eventually slowing and stopping insulin. The study went on to state that the greater the amount of excess fatty tissue in a person, the higher their level of insulin resistance is likely to be.
ReplyDelete