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Completed

NCT Number: NCT04705779

The HARMONY Study: A Intervention to Reduce Cardiometabolic Risk in African American Women

This study will test whether a culturally-tailored nutrition and exercise intervention designed for African-American women will lead to sustained improvements in exercise and healthy eating through improvements in self-management mediators: mindfulness, stress management, positive reappraisal, self-regulation, and self-efficacy.

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Key information

About this study

Among all groups of women in the US, African American women (AAW) have the highest rates of death and disability from chronic cardiometabolic (CM) illnesses. Furthermore, AAW have inadequate engagement in exercise and are least successful at achieving and sustaining CM risk-reduction goals compared to all men and women of other racial/ethnic groups, despite participating in comprehensive lifestyle interventions. These alarming disparities are due in part to disproportionately high rates of psychological stress. A shortcoming of interventions with AAW is an inadequate focus on stress exposure, including gender and racialized stress, stress physiology, and stress-related barriers to healthy eating and exercise to reduce CM risk. In response, the HARMONY study is a randomized controlled trial to test a culturally-tailored nutrition and exercise intervention to manage stress, designed to help AAW build on their strengths to promote self-management and to reduce stress-related CM risk. Certain information about the interventions is not disclosed to protect the scientific integrity of the trial.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Self-reported African American or Black woman
  • BMI= 25-39 kg/m^2 (confirmed at baseline assessment)
  • At least one cardiometabolic risk factor:
  • < 150 minutes of self-reported moderate to vigorous exercise
  • History of gestational diabetes
  • Parent or sibling with prediabetes or diabetes
  • Personal or family history of hypertension (=130/80)
  • Prediabetes or impaired glucose metabolism (HgbA1c 5.7-6.5)
  • Personal or family history of abnormal cholesterol levels
  • At least 18 years of age
  • Able to read/speak English
  • Willing to attend scheduled classes, complete internet surveys and biomarker assessments
  • Able/willing to engage in moderate to vigorous exercise
  • Ambulatory
  • Superwoman Schema Questionnaire score indicating at least moderate endorsement of one or more subscales (strength: 7; motional suppression: 7; resistance of vulnerability: 8; motivation to succeed: 7; or helping others: 10) or a total score of 20 or greater
  • A Perceived Stress Scale-14 score of >5 or self-report at least "some" general stress.

Exclusion criteria

  • Pregnant/anticipated pregnancy
  • Substance use, mental health or medical condition that will prevent the ability to participate in the intervention
  • Use of weight loss medication
  • Current or recent (<6 months prior to enrollment) engagement in another weight loss or meditation program
  • Impaired cognition (inability to follow and respond appropriately during screening).
  • Diabetes diagnosis
  • Has a confirmed BMI lower than 25 or higher than 39
  • Does not have access to a smartphone or computer with internet access
  • Lives in the same household as someone who is currently in the study or was previously in the study.

Treatment and study plan

HARMONY

Behavioral

The HARMONY intervention will be delivered over 8 every-other-week sessions and 6 monthly booster sessions. Each session will have three components; an exercise sampler, cool down and tailored education on cardiometabolic prevention and risk reductions.

Nutrition and Exercise Education (NEEW)

Behavioral

The Nutrition and Exercise Workgroup (NEEW) group will be delivered over 8 every-other-week sessions and 6 monthly booster sessions. Each session will have three components; an exercise sampler, cool down and tailored education on cardiometabolic prevention and risk reductions.

Primary outcomes

  1. Change in Amount of Moderate to Vigorous Physical Activity

    Time frame: Baseline, 48 weeks after first group session

    The participant's moderate to vigorous physical activity will be measured by triaxial accelerometry. Participants are instructed to wear the accelerometer for seven full days; the average number of minutes of MVPA per 24-hour period is computed. Results will be reported in minutes per day.

  2. Change in the Dietary Risk Assessment Score

    Time frame: Baseline, 48 weeks after first group session

    The participant's dietary intake will be assessed using the dietary risk assessment, which includes 54 items. The dietary risk assessment measures the healthiness of a participant's eating habits. Score ranges from 0 to 108, with higher scores associated with less healthy dietary intake.

  3. Change in Veggie Meter Score

    Time frame: Baseline, 48 weeks after first group session

    The participant's nutrition will be assessed using the veggie meter, which uses light reflectance spectroscopy to provide an estimated skin carotenoid composite score. Score ranges from 0 to 800, with higher scores associated with greater fruit and vegetable intake.

Secondary outcomes

  1. Change in BMI

    Time frame: Baseline, 48 weeks after first group session

    The participant's BMI is calculated as weight (kg) divided by the square of height (m^2).

  2. Change in Weight

    Time frame: Baseline, 48 weeks after first group session

    The participants weight will be measured using a digital scale.

  3. Change in Waist-to-Hip Ratio

    Time frame: Baseline, 48 weeks after first group session

    The participant's waist to hip ratio is calculated by using the mean of two waist circumference measurements divided by mean of two hip circumference measurements. Waist circumference will be measured at the midpoint between the upper iliac crest and lower costal margin in the midaxillary line. Hip circumference will be measured at the maximum width of the buttocks or gluteo-femoral fold.

  4. Change in Percent Body Fat

    Time frame: Baseline, 48 weeks after first group session

    The participant's percent body fat is measured using lange skinfold calipers. The final measurement will be the mean of three measurements on the right side of the body.

  5. Change in Blood Pressure (Systolic)

    Time frame: Baseline, 48 weeks after first group session

    The participant's blood pressure is measured using an electronic sphygmomanometer. The final measurement will be the mean of three measurements.

  6. Change in Blood Pressure (Diastolic)

    Time frame: Baseline, 48 weeks after first group session

    The participant's blood pressure is measured using an electronic sphygmomanometer. The final measurement will be the mean of three measurements.

  7. Change in High Sensitivity C-Reactive Protein Amount

    Time frame: Baseline, 48 weeks after first group session

    The participant's high sensitivity C-reactive protein levels will be obtained via phlebotomy. C-Reactive Protein is an inflammatory biomarker, and indicative of cardiovascular risk. Data will be log-transformed, and the units will be log-(ng/mL).

  8. Change in IL-6

    Time frame: Baseline, 48 weeks after first group session

    The participant's IL-6 levels will be obtained via phlebotomy. IL-6 is an inflammatory biomarker, and indicative of cardiovascular risk. Data will be log-transformed, and the units will be log-(pg/mL).

  9. Change in Glycosylated Hemoglobin (HbA1c)

    Time frame: Baseline, 48 weeks after first group session

    Participant's glycosylated hemoglobin levels will be obtained via phlebotomy. Glycosylated hemoglobin amount is indicative of cardiovascular risk.

Sponsors and collaborators

Lead sponsor

University of North Carolina, Chapel Hill

Other

Collaborators

  • National Institute on Minority Health and Health Disparities (NIMHD)

Registry information

Official study title

The HARMONY Study: A Culturally-relevant, Randomized-controlled, Stress Management Intervention to Reduce Cardiometabolic Risk in African American Women

Important dates

Study start
2021
Primary completion
2025
Study completion
2025
First posted
Jan 12, 2021
Registry last updated
Jan 29, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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