Dementia and Diabetes Prevention Program

Description

This is a multicenter, randomized 2-arm clinical trial of two lifestyle interventions varying in intensity and format, in 400 older African American and non-Hispanic whites at increased risk of cognitive decline and dementia in the East San Francisco Bay Area. The trial will include two lifestyle interventions that differ in intensity and format: 1. Aerobic Exercise (AEx) Intervention that involves aerobic activities with in-class walking workouts and tutorials and carried out at the East Oakland Sports Center (EOSC) and Tice Creek Fitness Center (TICE). 2. Dietary counseling to support adherence to the Mediterranean-Diet Approaches to Stop Hypertension (DASH) Intervention for Neurodegenerative Delay (MIND) diet to encourage increased consumption of berries, green leafy and other vegetables, whole grains, nuts, fish, poultry, beans and olive oil, and to reduce consumption of fried/fast foods, red meat, whole fat cheese, sweets, butter and trans-fat margarines.

Conditions

Diabetes, Dementia

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Study Overview

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Study Details

Study overview

This is a multicenter, randomized 2-arm clinical trial of two lifestyle interventions varying in intensity and format, in 400 older African American and non-Hispanic whites at increased risk of cognitive decline and dementia in the East San Francisco Bay Area. The trial will include two lifestyle interventions that differ in intensity and format: 1. Aerobic Exercise (AEx) Intervention that involves aerobic activities with in-class walking workouts and tutorials and carried out at the East Oakland Sports Center (EOSC) and Tice Creek Fitness Center (TICE). 2. Dietary counseling to support adherence to the Mediterranean-Diet Approaches to Stop Hypertension (DASH) Intervention for Neurodegenerative Delay (MIND) diet to encourage increased consumption of berries, green leafy and other vegetables, whole grains, nuts, fish, poultry, beans and olive oil, and to reduce consumption of fried/fast foods, red meat, whole fat cheese, sweets, butter and trans-fat margarines.

Dementia and Diabetes Prevention Program (DDPP)

Dementia and Diabetes Prevention Program

Condition
Diabetes
Intervention / Treatment

-

Contacts and Locations

Walnut Creek

University of California, Davis Alzheimer's Disease Center, Walnut Creek, California, United States, 94598

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.

For general information about clinical research, read Learn About Studies.

Eligibility Criteria

  • * Sedentary (as per the Telephone Assessment of Physical Activity)
  • * Poor diet (as per the MIND Diet Screener)
  • * Cognitive function: absence of significant cognitive impairment as per the modified Telephone Interview for Cognitive Status (TICSm; age-, education-, and race-adjusted TICSm \>32)
  • * Lives in a region where the DDPP interventions will be delivered
  • * Does not plan to travel outside of the home geographic area for more than 3 months over the course of the study
  • * Free of physical disabilities that preclude participation in the study
  • * Willing to complete all study-related activities for 32 weeks
  • * Willing to be randomized to either lifestyle intervention group
  • * Age \<60
  • * Body Mass Index (BMI) \>40
  • * Any significant neurologic disease, including any form of dementia, Parkinson's disease, Huntington's disease, normal pressure hydrocephalus, brain tumor, progressive supranuclear palsy, seizure disorder, subdural hematoma, multiple sclerosis, or history of significant head trauma with persistent neurologic sequelae or known structural brain abnormalities
  • * History of major depression within the last 12 months
  • * History of bipolar disorder or schizophrenia as per Diagnostic and Statistical Manual of Mental Disorders (DSM) V criteria
  • * History of alcohol or substance abuse or dependence within the past 2 years, as per DSM V criteria
  • * Use of psychoactive medications within the last 3 months including tricyclic antidepressants, antipsychotics, mood-stabilizing psychotropic agents (e.g., lithium salts), psychostimulants, opiate analgesics, antiparkinsonian medications, anticonvulsant medications (except gabapentin and pregabalin for non-seizure indications), systemic corticosteroids, or medications with significant central anticholinergic activity; in the absence of major depression, stable dose use of selective serotonin reuptake inhibitors or serotonin and norepinephrine reuptake inhibitors are allowed
  • * Health profiles that would jeopardize their safety to participate: (Screen failures will be referred immediately to a physician for medical examination): (1) Myocardial infarction or symptoms of unstable coronary artery disease (e.g., angina) in the last six months, (2) Uncontrolled hypertension within the past 6 months, (3) Morbid obesity (BMI\<40), (4) History of clinically-evident stroke, (5) Clinically-significant infection within the past 30 days, (6) Significant pain or musculoskeletal disorder limiting the ability to participate safely, or (7) Clinically significant
  • * Past or current use of insulin to treat type 2 diabetes
  • * Serious diabetic event within 6 months of enrollment
  • * Lung disease requiring either regular use of corticosteroids or the use of supplemental oxygen (inhaled steroids for asthma is permissible)
  • * Renal disease
  • * Clinically significant abnormalities in laboratory blood tests as per judgment of the Study Physician
  • * History within the last 2 years of treatment for primary or recurrent malignant disease, excluding non-melanoma skin cancers, resected cutaneous squamous cell carcinoma in situ, basal cell carcinoma, cervical carcinoma in situ, or in situ prostate cancer with normal prostate-specific antigen post-treatment
  • * History of hip fracture, joint replacement, or spinal surgery in the last 6 months
  • * Currently receiving physical therapy or cardiopulmonary rehabilitation
  • * History of a malabsorptive bariatric procedure (gastric bypass, biliopancreatic diversion); other bariatric procedures involving restriction (i.e., sleeve, band) are not exclusionary
  • * For women: currently pregnant, pregnant within the past 6 months, or planning to become pregnant within the next 6 months
  • * Currently incarcerated
  • * Receiving hospice care
  • * Adults unable to provide consent for participation
  • * PI/Study Physician discretion regarding appropriateness of participation or concern about intervention adherence

Ages Eligible for Study

60 Years to

Sexes Eligible for Study

ALL

Accepts Healthy Volunteers

No

Collaborators and Investigators

University of California, Davis,

David K Johnson, PhD, PRINCIPAL_INVESTIGATOR, University of California, Davis

Study Record Dates

2025-06-27