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Young Adults with Type 1 Diabetes Have Poor Muscle Health

by Hannah Joy on April 18, 2018 at 9:06 PM
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Highlights

Poor muscle health could be one of the complications of Type 1 diabetes, even among active young adults. The reason behind this was found to be dysfunctional mitochondria that cause the muscles not to use glucose and in the process, damages the muscle cells.


Young adults with and without Type 1 diabetes were analyzed by the research team, where muscle biopsies were done, especially in those who have exceeded their Diabetes Canada's recommended weekly levels for physical activity.

‘Aerobic exercise can increase the number of mitochondria in the muscle and helps muscle cells use more glucose making them more efficient.’

Link between Diabetes and Muscle Complications

A muscle biopsy is a procedure, which is used to diagnose diseases involving muscle tissue. The new study was conducted by scientists from McMaster and York universities.

The results showed that there were changes in the mitochondrial structure and function of those with diabetes. The mitochondria were less capable of producing energy for the muscle, and also high amounts of toxic reactive oxygen species that cause cell damage were being released.

These changes can lead to reduced metabolism and difficulty in controlling blood glucose levels. If left unchecked can lead to an accelerated rate of disability.

In this study, poor muscle health was also added to the list of Type 1 diabetes complications, apart from nerve damage, kidney disorders and heart disease.

Thomas Hawke, the corresponding author of the study and a professor of pathology and molecular medicine at McMaster, said, "Now we know that even active people with diabetes have changes in their muscles that could impair their ability to manage blood sugar. Knowing in the long term that this could contribute to faster development of disability, we can start to address it early on."

Importance of Muscle Health

Skeletal muscle, the largest metabolic organ helps in clearing blood sugar after having a meal. Therefore, it is necessary to keep this muscle healthy, said Christopher Perry, study co-senior author and an associate professor of kinesiology and health sciences and the Muscle Health Research Centre at York University.

Regular exercise, mainly aerobic can increase the number of mitochondria in the muscle and helps muscle cells use more glucose making them more efficient.

Perry suggested that the current guidelines available for Type 1 diabetics need to be revised.

"We believe these dysfunctional mitochondria are what's causing the muscle not to use glucose properly and also to damage muscle cells in the process. We were surprised to see the muscles were this unhealthy in young adults with Type 1 diabetes who were regularly active," said Perry.

The research team said that there is a need for further study and to revise evidence-based exercise guidelines for Type 1 diabetes. These are essential to keep people with Type 1 diabetes in good health.

Aerobic Exercise

Aerobic refers to the use of oxygen during exercise that helps break down glucose and fat for energy. Aerobic exercise is a form of physical activity that uses the muscles in the arms, legs, and hips to maintain the overall health of the body. Few examples of aerobic exercise include running, bicycling, swimming, rowing, etc.

Benefits of Aerobic Exercise:

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