Take the Diabetes Health Pump Survey
See What's Inside
Read this FREE issue now
For healthcare professionals only
  • 12 Tips for Traveling With Diabetes
See the entire table of contents here!

You can view the current or previous issues of Diabetes Health online, in their entirety, anytime you want.
Click Here To View

See if you qualify for our free healthcare professional magazines. Click here to start your application for Pre-Diabetes Health, Diabetes Health Pharmacist and Diabetes Health Professional.

Learn More About the Professional Subscription

Free Diabetes Health e-Newsletter
Latest
Popular
Top Rated
Diabetes Health Reference Charts
Insulin Archives
Print | Email | Share | Comments (0)

What Is the Impact of Exercise on Diabetes?


Aug 1, 2005

Caution: Be sure to consult your diabetes care team before starting any new exercise program or increasing the intensity of your current routine.

The body’s response

Each time you exercise, you are placing a stress on your body for which an appropriate response is necessary. This article discusses the body’s response to exercise for the diabetic who is on insulin therapy or insulin secretagogues such as glyburide, glipizide, Glucotrol XL, Amaryl, Prandin or Starlix. It also addresses steps to prevent diabetes-related complications, hypoglycemia in particular, during exercise. Maintaining safe blood glucose levels during and after exercise is accomplished through a correct balance of medications, diet and exercise.

Exercise Yields Consistent BGs

For nondiabetics, blood glucose levels during exercise remain remarkably consistent. This is because the healthy pancreas secretes less insulin in response to exercise, which allows blood glucose to be mobilized from the liver and subsequently taken up by working muscle to be used as fuel.

The current emphasis on tight blood glucose control to prevent complications associated with diabetes increases the potential for hypoglycemia or a fall in blood glucose during exercise. In the case of a diabetic who is treated with insulin therapy or insulin secretagogues, the failure of blood insulin levels to decrease with exercise can result in relatively high levels of insulin and possible hypoglycemia. For this reason, reducing the dose of insulin with exercise may help prevent hypoglycemia. Consult with your diabetes care team for strategies in adjusting insulin dosages to accommodate your exercise needs.

An Insulin-Like Effect

Another potential contributor to exercise-induced hypoglycemia is the fact that exercise has an insulin-like effect. Muscle contractions associated with exercise promote movement of glucose from the blood into the muscle, an action similar to that of the impact of insulin. In fact, exercise alone can result in glucose uptake into muscle, independent of insulin. Thus if too much insulin is present prior to exercise, hypoglycemia may result. On the other hand, too little insulin present and high blood glucose or hyperglycemia may be the result.

The American Diabetes Association has published a position statement on the topic of exercise and diabetes. This helpful resource offers detailed information on the response to exercise for both type 1 and 2 diabetics as well as the impact of complications such as neuropathy and peripheral artery disease on exercise. The statement, “Physical Activity/Exercise and Diabetes,” is available from the American Diabetes Association.


Preventing exercise-associated emergencies:

1. Avoid physical activity if fasting glucose is greater than 250 mg/dl and ketosis is present, and use caution if glucose levels are greater than 300 mg/dl even if no ketosis is present.

2. Ingest additional carbohydrate if glucose levels are less than 100 mg/dl. Consume extra carbohydrate as needed to avoid hypoglycemia. Carbohydrate foods should be readily available during and after physical activity.

3. Inject insulin away from exercising muscles to prevent rapid absorption.

4. Monitor blood glucose before, during and after strenuous exercise, especially when you are just beginning an exercise program. Exercise can result in hypoglycemia as much as four hours after completion.

—Source: ADA


Categories: Blood Glucose, Diabetes, Diabetes, Exercise, Food, Insulin, Low Blood Sugar



You May Also Be Interested In...


Comments


Add your comments about this article below. You can add comments as a registered user or anonymously. If you choose to post anonymously your comments will be sent to our moderator for approval before they appear on this page. If you choose to post as a registered user your comments will appear instantly.

When voicing your views via the comment feature, please respect the Diabetes Health community by refraining from comments that could be considered offensive to other people. Diabetes Health reserves the right to remove comments when necessary to maintain the cordial voice of the diabetes community.

For your privacy and protection, we ask that you do not include personal details such as address or telephone number in any comments posted.

Don't have your Diabetes Health Username? Register now and add your comments to all our content.

Have Your Say...


Username: Password:
Comment:
©1991-2014 Diabetes Health | Home | Privacy | Press | Advertising | Help | Contact Us | Donate | Sitemap

Diabetes Health Medical Disclaimer

The information on this site is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. All content, including text, graphics, images, and information, contained on or available through this website is for general information purposes only. Opinions expressed here are the opinions of writers, contributors, and commentators, and are not necessarily those of Diabetes Health. Never disregard professional medical advice or delay seeking medical treatment because of something you have read on or accessed through this website.