Insulin-Sensitivity Response to a Single Bout of Resistive Exercise in Type 1 Diabetes Mellitus

in Journal of Sport Rehabilitation

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Carolyn Jimenez
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Mayra Santiago
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Michael Sitler
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Guenther Boden
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Carol Homko
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Context:

Little is known about the acute effects of resistance exercise on insulin sensitivity in people with type 1 diabetes.

Design:

Repeated-measures design with 2 independent variables: group (exercise and nonexercise control) and time (preexercise and 12 and 36 h postexercise).

Setting:

General Clinical Research Center, Temple University Hospital, Philadelphia, PA.

Patients:

14 physically active subjects (11 men and 3 women) with type 1 diabetes.

Intervention:

The exercise group completed 5 sets of 6 repetitions of strenuous (80% 1-RM) quadriceps and hamstring exercises while the control group performed only activities of daily Living.

Main Outcome Measures:

Insulin sensitivity was assessed with the euglycemic-hyperinsulinemic-clamp technique preexercise and 12 and 36 h postexercise.

Results:

Insulin-sensitivity values were not significantly different between the exercise and control groups (P = .92) or over time (P = .67).

Conclusions:

A single bout of strenuous resistance exercise does not alter insulin sensitivity in people with type 1 diabetes.

Jimenez is with the Dept of Sports Medicine, West Chester University, West Chester, PA. Santiago and Sitler are with the Dept of Kinesiology, Temple University, Philadelphia, PA. Boden and Homko are with the General Clinical Research Center, Temple University Hospital, Philadelphia, PA.

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