Physical and Cognitive Function - Look AHEAD Ancillary Study

NCT ID: NCT01410097

Last Updated: 2018-09-10

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

1089 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-09-30

Study Completion Date

2015-09-30

Brief Summary

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Obesity is associated with physical disability through both direct pathways (e.g., lower extremity pain, insufficient muscle strength) and indirect pathways (obesity-related comorbidities and inflammation). Furthermore, diabetes, a major obesity-related health condition, is associated with increased risk of disability and accelerated declines in physical and cognitive function. The investigators preliminary data suggest that intentional weight loss improves physical function, and there is strong circumstantial evidence that it would also benefit cognitive function.

To evaluate the role of intentional weight loss on physical and cognitive function, the investigators propose an ancillary study to the on-going Look AHEAD (Action for Health in Diabetes) trial. Look AHEAD is a multi-center, randomized clinical trial to examine the effects of a 4-year lifestyle intervention designed to achieve and maintain weight loss through decreased caloric intake and exercise in overweight or obese men and women aged 45-74 years with type 2 diabetes. The investigators propose to add validated and well-established measures of physical and cognitive performance to the year 8 follow-up visit - during the trial's weight maintenance phase - in \~1000 participants at 4 of the 16 Look AHEAD field sites (Colorado, Memphis, Pennington and Pittsburgh).

The specific aims of this ancillary study are: 1) To determine the long-term effects of a lifestyle intervention designed to achieve and maintain weight loss on physical function; and 2) To determine the long-term effects of a lifestyle intervention designed to achieve and maintain weight loss on cognitive function. In addition, the investigators hypothesize that in the intervention group, larger initial weight loss, better weight loss maintenance, and higher physical activity will be associated with better physical and cognitive function. The investigators also hypothesize that in the control group weight loss will be associated with worse physical and cognitive function than in those who are weight stable or who have gained weight.

The number of obese older adults is rising rapidly and there are few data to guide an evidence-based clinical response to their management. The results of this study will provide the first direct evidence of the role of long-term intentional weight loss on the maintenance of physical and cognitive function in older obese adults with diabetes. Since this study is being done as an ancillary study to an on-going trial it can be done in a timely and cost-efficient manner.

Detailed Description

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Conditions

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Diabetes Weight Loss Physical Function Cognitive Function

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Lifestyle intervention

Intensive Lifestyle Intervention that includes diet, physical activity, and behavior modification. The goal of the ILI intervention was for individuals to achieve and maintain a loss of at least 7% of initial body weight.

Group Type EXPERIMENTAL

Lifestyle intervention

Intervention Type BEHAVIORAL

Intensive Lifestyle Intervention that includes diet, physical activity, and behavior modification. The goal of the ILI intervention was for individuals to achieve and maintain a loss of at least 7% of initial body weight.

Diabetes Support and Education (DSE)

It offers an educational program to participants including developing support groups. Providing such benefits helps retain these participants in the trial.

Group Type PLACEBO_COMPARATOR

Diabetes Support Education

Intervention Type BEHAVIORAL

It offers an educational program to participants including developing support groups. Providing such benefits helps retain these participants in the trial.

Interventions

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Lifestyle intervention

Intensive Lifestyle Intervention that includes diet, physical activity, and behavior modification. The goal of the ILI intervention was for individuals to achieve and maintain a loss of at least 7% of initial body weight.

Intervention Type BEHAVIORAL

Diabetes Support Education

It offers an educational program to participants including developing support groups. Providing such benefits helps retain these participants in the trial.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* The only inclusion criterion is that the participant is considered "active" at his/her Year 8 or Year 9 visit in the main study.

Exclusion Criteria

* The only exclusion criterion is the person is not willing to participate in this ancillary study.
Minimum Eligible Age

45 Years

Maximum Eligible Age

74 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pennington Biomedical Research Center

OTHER

Sponsor Role collaborator

University of Colorado, Denver

OTHER

Sponsor Role collaborator

University of Tennessee

OTHER

Sponsor Role collaborator

University of Pittsburgh

OTHER

Sponsor Role collaborator

National Institute on Aging (NIA)

NIH

Sponsor Role collaborator

Wake Forest University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Stephen B Kritchevsky, PhD

Role: PRINCIPAL_INVESTIGATOR

Wake Forest University Health Sciences

Locations

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University of Colorado Health Sciences Center

Aurora, Colorado, United States

Site Status

Pennington Biomedical Research Center

Baton Rouge, Louisiana, United States

Site Status

University of Pittsburgh

Pittsburgh, Pennsylvania, United States

Site Status

The University of Tennessee-Memphis

Memphis, Tennessee, United States

Site Status

Countries

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United States

References

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Ip EH, Chen SH, Rejeski WJ, Bandeen-Roche K, Hayden KM, Hugenschmidt CE, Pierce J, Miller ME, Speiser JL, Kritchevsky SB, Houston DK, Newton RL, Rapp SR, Kitzman DW. Gradient and Acceleration of Decline in Physical and Cognitive Functions in Older Adults: A Disparity Analysis. J Gerontol A Biol Sci Med Sci. 2022 Aug 12;77(8):1603-1611. doi: 10.1093/gerona/glac109.

Reference Type DERIVED
PMID: 35562076 (View on PubMed)

Beavers KM, Leng I, Rapp SR, Miller ME, Houston DK, Marsh AP, Hire DG, Baker LD, Bray GA, Blackburn GL, Hergenroeder AL, Jakicic JM, Johnson KC, Korytkowski MT, Dorsten BV, Kritchevsky SB; Action for Health in Diabetes Movement and Memory Ancillary Study Research Group. Effects of Longitudinal Glucose Exposure on Cognitive and Physical Function: Results from the Action for Health in Diabetes Movement and Memory Study. J Am Geriatr Soc. 2017 Jan;65(1):137-145. doi: 10.1111/jgs.14478. Epub 2016 Sep 27.

Reference Type DERIVED
PMID: 27676466 (View on PubMed)

Other Identifiers

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R01AG033087

Identifier Type: NIH

Identifier Source: secondary_id

View Link

IRB00008777

Identifier Type: -

Identifier Source: org_study_id

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