Exercise Training and Type 2 Diabetes

December 2, 2014 updated by: Thomas Solomon, Rigshospitalet, Denmark
The purpose of this study is to assess whether 4-months of interval-walking exercise training improves glycemic control in individuals with type 2 diabetes mellitus. The effects of interval-walking training will be compared to continuous-walking exercise in a randomised, controlled trial design. Changes in glycemic control will be examined using oral glucose tolerance tests (OGTT) with stable isotope methodology. In addition, insulin sensitivity and secretion will be examined using glucose clamps combined with glucagon-like peptide 1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

32

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Denmark
      • Copenhagen, Denmark, 2100
        • Rigshospitalet

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • age 18 to 80
  • normal glucose tolerance, impaired glucose tolerance, or type 2 diabetes (as evidenced by use of oral hypoglycemic medication or 2-hour OGTT glucose > 11.1 mmol/l)

Exclusion Criteria:

  • Insulin treatment or type 1 diabetes
  • BMI <19 or >40
  • Physically active
  • Undergoing weight-loss/gain
  • Pregnancy
  • Contraindication to exercise (ECG/CPX)
  • Significant cardiovascular disease
  • History of renal/hepatic/gastrointestinal/pulmonary disease
  • Clotting or bleeding disorders

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Control
Experimental: Exercise - Continuous Walking
Behavioral: Exercise - Continuous Walking
Duration: 4 months. Exercise training sessions will be performed 3-5 days/week and will consist of walking for up to 60 minutes/day at 55% VO2max.
Experimental: Exercise - Interval Walking
Behavioral: Exercise Training - Interval Walking
Duration: 4 months. Exercise training sessions will be performed 3-5 days/week. Sessions will consist of walking for 3 minutes at 70% VO2max followed by 3 minutes at 40% VO2max for up to 60 minutes/day.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Glycemic Control
Time Frame: 0 and 4 months
Fasting glucose, two-hour glucose during OGTT, and hemoglobin A1c will be measured.
0 and 4 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Beta-cell Function
Time Frame: 0 and 4 months
Glucose tolerance tests and hyperglycemic clamps combined with GLP-1 / GIP will be conducted. Glucose tracer kinetics and C-peptide deconvolution will be used to assess pancreatic function.
0 and 4 months
Body Composition
Time Frame: 0 and 4 months
DXA and MRI will be used to assess changes in whole body and regional adiposity.
0 and 4 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Rigshospitalet, Denmark

Investigators

  • Principal Investigator: Kristian Karstoft, M.D., Rigshospitalet, Denmark

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

August 1, 2010

Primary Completion (Actual)

November 1, 2012

Study Completion (Actual)

November 1, 2014

Study Registration Dates

First Submitted

November 1, 2010

First Submitted That Met QC Criteria

November 3, 2010

First Posted (Estimate)

November 4, 2010

Study Record Updates

Last Update Posted (Estimate)

December 3, 2014

Last Update Submitted That Met QC Criteria

December 2, 2014

Last Verified

December 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-1-2010-027

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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