NCT00962962

Brief Summary

The purpose of the study is to evaluate the effects of different amounts and intensities of aerobic exercise training programs, with and without weight loss, in people who are at risk for diabetes. An additional purpose of the study is to evaluate the factors in the blood and in exercising muscles that contribute to the improvement in those risk factors. This information will be used to improve exercise training guidelines for improving cardiovascular and metabolic health in people with abnormal fasting glucose, also known as prediabetes.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
288

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jul 2009

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 1, 2009

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

August 19, 2009

Completed
1 day until next milestone

First Posted

Study publicly available on registry

August 20, 2009

Completed
4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2013

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 1, 2013

Completed
Last Updated

July 15, 2014

Status Verified

September 1, 2013

Enrollment Period

4.1 years

First QC Date

August 19, 2009

Last Update Submit

July 14, 2014

Conditions

Keywords

Abnormal fasting glucose

Outcome Measures

Primary Outcomes (1)

  • Fasting Plasma Glucose

    3 month control and 6 months intervention

Secondary Outcomes (1)

  • Measures of Glucose control

    3 month control and 6 month intervention

Study Arms (4)

Low-Amount/Moderate Intensity Exercise

OTHER

Aerobic exercise at 50% peak oxygen use/consumption expending approximately 1,000 calories per week equaling approximately 10 miles per week OR 2.5-3.5 hours per week

Behavioral: Aerobic Exercise

High-Amount/Moderate-Intensity Exercise

OTHER

Aerobic exercise at 50% peak oxygen use/consumption expending approximately 1,600 calories per week equaling approximately 16 miles per week OR 4-6 hours per week

Behavioral: Aerobic Exercise

High-Amount/Vigorous-Intensity Exercise

OTHER

Aerobic exercise at 75% peak oxygen use/consumption expending approximately 1,600 calories per week equaling approximately 16 miles per week OR 2-3 hours per week

Behavioral: Aerobic Exercise

Low-Amount/Moderate-Intensity Exercise + Diet

OTHER

* Exercise - 150 minutes per week (30 minutes / 5 days per week) of aerobic exercise at 50% peak oxygen use/consumption equaling approximately 10 miles per week * Diet - The CLI sessions will provide training on needed skills (e.g., calorie counting, portion size estimation) as well as motivation and support in a group counseling setting designed to achieve a weight loss goal of 5 to 7% of baseline body weight.

Behavioral: Exercise and Diet

Interventions

Aerobic exercise at 50% peak oxygen use/consumption expending approximately 1,000 calories per week equaling approximately 10 miles per week OR 2.5-3.5 hours per week

Low-Amount/Moderate Intensity Exercise

* Exercise - 150 minutes per week (30 minutes / 5 days per week) of aerobic exercise at 50% peak oxygen use/consumption equaling approximately 10 miles per week * Diet - The Clinical Lifestyle Intervention sessions will provide training on needed skills (e.g., calorie counting, portion size estimation) as well as motivation and support in a group counseling setting designed to achieve a weight loss goal of 5 to 7% of baseline body weight.

Low-Amount/Moderate-Intensity Exercise + Diet

Eligibility Criteria

Age45 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age: 45-75 years
  • Moderately Overweight determined by Body Mass Index: 25.0 - 35.4
  • Fasting plasma glucose: \> 95 - \< 126 mg/dL until 2/15/2012 when lower limit was adjusted to \> 100 mg/dL
  • o Readings from two separate days, both being \> 95 (\> 100 after 2/15/2012)and one of the two being \< 126
  • Low density (LDL) cholesterol: \< 190 mg/dL
  • Triglycerides: \< 600 mg/dL
  • Resting blood pressure: \< 160/90 mmHg
  • Inactive: Exercise \< one day/week; Peak oxygen consumption: \> 18.0 - \< 40.0 ml/kg/min until 2/15/2012 when lower limit was adjusted to 12.0 ml/kg/min
  • Medications: Stable use of all medications for \> three months

You may not qualify if:

  • Smoker: Tobacco use within the last 12 months
  • Dieting or intending to diet
  • Use of potential confounding medications, e.g. Niacin containing drugs
  • History of diabetes, heart disease or taking medication for those conditions
  • History of hypertension (high blood pressure) not controlled with medication
  • Pregnant or intending to become pregnant
  • Unwillingness to undergo a three month control/run-in period, be randomized to any one of four intervention groups, submit to thigh muscle biopsies and all other study testing or continuously participate in a randomly assigned exercise training or lifestyle intervention program for six months
  • Orthopedic limitations, musculoskeletal disease and/or injury
  • Allergic to xylocaine (anesthetic or numbing medicine)
  • Inability to give blood continuously through a catheter (please notify the study nurse of any difficulty you have experienced in the past when having your blood drawn; the study nurse will determine whether you are excluded for this reason)
  • Unwillingness to exercise at least twice per week at the Duke Center for Living Health and Fitness Center during research study staff supervised times

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Duke Center For Living

Durham, North Carolina, 27710, United States

Location

Related Publications (5)

  • Jiang R, Collins KA, Huffman KM, Hauser ER, Hubal MJ, Johnson JL, Williams RB, Siegler IC, Kraus WE. Genome-Wide Genetic Analysis of Dropout in a Controlled Exercise Intervention in Sedentary Adults With Overweight or Obesity and Cardiometabolic Disease. Ann Behav Med. 2024 Apr 11;58(5):363-374. doi: 10.1093/abm/kaae011.

  • Bennett WC, Collins KA, Johnson JL, Slentz CA, Willis LH, Bales CW, Huffman KM, Kraus WE. Effects of exercise amount and intensity versus a combined exercise and lifestyle intervention on metabolic syndrome in adults with prediabetes: a STRRIDE-PD randomized trial. Front Physiol. 2023 Jul 14;14:1199763. doi: 10.3389/fphys.2023.1199763. eCollection 2023.

  • Sarzynski MA, Ruiz-Ramie JJ, Barber JL, Slentz CA, Apolzan JW, McGarrah RW, Harris MN, Church TS, Borja MS, He Y, Oda MN, Martin CK, Kraus WE, Rohatgi A. Effects of Increasing Exercise Intensity and Dose on Multiple Measures of HDL (High-Density Lipoprotein) Function. Arterioscler Thromb Vasc Biol. 2018 Apr;38(4):943-952. doi: 10.1161/ATVBAHA.117.310307. Epub 2018 Feb 8.

  • Bartlett DB, Slentz CA, Connelly MA, Piner LW, Willis LH, Bateman LA, Granville EO, Bales CW, Huffman KM, Kraus WE. Association of the Composite Inflammatory Biomarker GlycA, with Exercise-Induced Changes in Body Habitus in Men and Women with Prediabetes. Oxid Med Cell Longev. 2017;2017:5608287. doi: 10.1155/2017/5608287. Epub 2017 May 31.

  • Slentz CA, Bateman LA, Willis LH, Granville EO, Piner LW, Samsa GP, Setji TL, Muehlbauer MJ, Huffman KM, Bales CW, Kraus WE. Effects of exercise training alone vs a combined exercise and nutritional lifestyle intervention on glucose homeostasis in prediabetic individuals: a randomised controlled trial. Diabetologia. 2016 Oct;59(10):2088-98. doi: 10.1007/s00125-016-4051-z. Epub 2016 Jul 15.

MeSH Terms

Conditions

Glucose Intolerance

Interventions

ExerciseDiet

Condition Hierarchy (Ancestors)

HyperglycemiaGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic Diseases

Intervention Hierarchy (Ancestors)

Motor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological PhenomenaNutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological Phenomena

Study Officials

  • William E Kraus, MD

    Duke University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 19, 2009

First Posted

August 20, 2009

Study Start

July 1, 2009

Primary Completion

August 1, 2013

Study Completion

August 1, 2013

Last Updated

July 15, 2014

Record last verified: 2013-09

Locations