ClinicalTrials.gg
CompletedNCT02911753Updated Oct 25, 2019Results posted

Feasibility and Acceptability of a Beverage Intervention for Hispanic Adults

An interventional study of Mediterranean Lemonade and Green Tea in Obesity, Hypercholesterolemia and Hyperglycemia, sponsored by University of Arizona. Completed at 1 site in United States. Open to participants aged 18 Years to 64 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-10-25.

Sponsored by University of Arizona · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 3 months after the study started (first participant enrolled Jun 2016, registered Sep 2016).
Phase
Not applicable
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years to 64 Years
Sex
All
01

Study summary

This study aims to 1) assess the feasibility and acceptability of a prescribed beverage intervention in 50 obese Hispanic adults ages 18-64 years over 6 weeks; and 2) assess preliminary effects of the beverage intervention on cholesterol and triglyceride levels as well as other markers of health such as blood pressure, glucose and markers of inflammation. This project, if successful, will provide early evidence that targeting dietary behavior around beverage intake could be a novel and easily adopted approach to reduce the burden or delay the onset of metabolic abnormalities in obese Hispanic adults. The expected outcome of the proposed project is the identification of feasible and appropriate beverage intervention strategies to improve engagement and adherence to dietary modification approaches for control of metabolic health indicators in this vulnerable ethnic group.

Read the detailed description

In the U.S., Hispanics have the highest rates of overweight and obesity when compared to other racial/ethnic groups placing them at a greater risk for obesity-related disease. Yet, current literature is limited to information on best practices to engage Hispanics in health-promoting lifestyle interventions. Without this information the health consequences associated with obesity, including high blood pressure, elevated blood glucose and high cholesterol, will continue. Evidence exists to support diet-specific behavioral interventions in reducing obesity-related health risks. Among the more adoptable interventions to date are efforts targeting beverage intake. Yet, there are limited data to suggest these approaches are effective for Hispanics despite this being the fastest growing and highest burdened group for obesity-related disease within the U.S. population.

This study aims to 1) assess the feasibility and acceptability of a prescribed beverage intervention in 50 obese Hispanic adults ages 18-64 years over 6 weeks; 2) assess preliminary effects of the beverage intervention on cholesterol and triglyceride levels as well as other markers of health such as blood pressure, glucose and markers of inflammation. This project, if successful, will provide early evidence that targeting dietary behavior around beverage intake could be a novel and easily adopted approach to reduce the burden or delay the onset of metabolic abnormalities in obese Hispanic adults. The expected outcome of the proposed project is the identification of feasible and appropriate beverage intervention strategies to improve engagement and adherence to dietary modification approaches for control of metabolic health indicators in this vulnerable ethnic group.

02

Conditions studied

  • Obesity
  • Hypercholesterolemia
  • Hyperglycemia
  • Hypertriglyceridemia
03

In context

Obesity

6,570 studies on the registry are indexed under Obesity; 1,718 are open to participants now.

This study's enrollment of 50 is below the median of 77 across 5,084 interventional studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

University of Arizona is the lead sponsor of 475 studies on the registry; 87 are open to participants now.

Of its 51 completed or terminated interventional studies of FDA-regulated products, 30 (59%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 64 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Self-identify as Hispanic
  • 18-64 years of age
  • BMI between 30 to 50.0 kg/m²
  • Ability to participate in and provide informed consent.
  • Speak, read, and write either English and/or Spanish

Exclusion criteria

Exclusion Criteria:

  • Diagnosis of diabetes mellitus
  • History of liver disease
  • Current medication for glucose control, cholesterol control; uncontrolled BP
  • Current eating disorders such as anorexia nervosa, bulimia, etc. (likely to make adherence to prescribed beverage intake difficult)
  • Current alcohol or substance abuse
  • Currently treated for psychological issues (i.e. depression, bipolar disorder, etc.), taking psychotropic medications with the previous 12 months, or hospitalized for depression within the previous 5 years
  • Report exercise on ≥3 days per week for ≥ 20 minutes per day over the past 3 months
  • Report weight loss of ≥5% or participating in a weight reduction diet program in the past 3 months
  • Report plans to relocate to a location that limits their access to the study site or having employment, personal, or travel commitments that prohibit attendance to all of the scheduled assessments
  • Report consumption of ≥ 1 cup of green tea daily and not willing to complete 2 week run-in period
  • Report consumption of ≥ 1 cup of citrus fruit daily and not willing to complete 2 week run-in period
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
50 participants (actual)

Study arms

  • Experimental
    Mediterranean Lemonade Consumption

    All participants will be asked to consume 32 ounces daily of Mediterranean Lemonade. The beverage will be previously prepared and packaged by study personnel. Participants will receive their beverage supply on a weekly basis for a total of six weeks.

    Other: Mediterranean Lemonade

  • Experimental
    Green Tea Consumption

    All participants will be asked to consume 32 ounces daily of Green Tea. The beverage will be previously prepared and packaged by study personnel. Participants will receive their beverage supply on a weekly basis for a total of six weeks.

    Other: Green Tea

  • Placebo comparator
    Flavored Water Consumption

    All participants will be asked to consume 32 ounces daily of Flavored Water. The beverage will be previously prepared and packaged by study personnel. Participants will receive their beverage supply on a weekly basis for a total of six weeks.

    Other: Flavored Water

Interventions

  • OtherMediterranean Lemonade

    All participants will be advised to consume all of the beverage assigned (mediterranean lemonade) on a daily basis (rather than save up and consume large amounts on fewer days). The beverages will be prepared in advance by study personnel, refrigerated, and distributed to study participants on a weekly basis. Participants will be provided a daily 32-ounce beverage container for beverage consumption and instructed to clean the container nightly. Participants will also be asked to keep a log of completion of beverage on a daily basis and instructions regarding intake of other beverages will be provided.

    Also known as: Beverage Consumption Intervention

  • OtherGreen Tea

    All participants will be advised to consume all of the beverage assigned (green tea) on a daily basis (rather than save up and consume large amounts on fewer days). The beverages will be prepared in advance by study personnel, refrigerated, and distributed to study participants on a weekly basis. Participants will be provided a daily 32-ounce beverage container for beverage consumption and instructed to clean the container nightly. Participants will also be asked to keep a log of completion of beverage on a daily basis and instructions regarding intake of other beverages will be provided.

    Also known as: Beverage Consumption Intervention

  • OtherFlavored Water

    All participants will be advised to consume all of the beverage assigned (flavored water) on a daily basis (rather than save up and consume large amounts on fewer days). The beverages will be prepared in advance by study personnel, refrigerated, and distributed to study participants on a weekly basis. Participants will be provided a daily 32-ounce beverage container for beverage consumption and instructed to clean the container nightly. Participants will also be asked to keep a log of completion of beverage on a daily basis and instructions regarding intake of other beverages will be provided.

    Also known as: Beverage Consumption Intervention

06

What researchers measure

Primary outcomes

  1. Study Recruitment: Interest in Participation

    The number of Hispanic adults who contact the researchers and express interest in participation.

    Time frame: Baseline

  2. Study Recruitment: Screened for Eligibility

    The number of Hispanic adults screened for eligibility

    Time frame: Baseline

  3. Study Recruitment: Eligibility

    The number of Hispanic adults eligible for study inclusion.

    Time frame: Baseline

  4. Study Recruitment: Ineligibility

    The number of Hispanic adults ineligible for study inclusion.

    Time frame: Baseline

  5. Enrollment

    The number of Hispanic adults enrolled in the study.

    Time frame: Baseline

  6. Retention

    Retention will be measured as the number of participants who remain in the study at 6 weeks.

    Time frame: Week 6

  7. Treatment Satisfaction

    Participants will be asked to rate their overall satisfaction (1- low; 4-high) with the intervention for changing dietary patterns at Week 6 and if they would recommend the program to others.

    Time frame: Week 6

Secondary outcomes

  1. Change in Total Cholesterol (Baseline and Week 6)

    Fasting blood samples (venipuncture) will be collected for the purpose of examining changes in total cholesterol.

    Time frame: Baseline and Week 6

  2. Change in Fasting Glucose (Baseline and Week 6)

    Fasting blood samples (venipuncture) will be collected for the purpose of examining changes in glucose.

    Time frame: Baseline and Week 6

  3. Change in Hemoglobin A1C (Baseline and Week 6)

    Fasting blood samples (venipuncture) were collected for the purpose of examining changes in hemoglobin A1C.

    Time frame: Baseline and Week 6

  4. Change in Body Weight (Baseline and Week 6)

    Body weight was measured on a digital scale to assess change in body weight over the intervention period.

    Time frame: Baseline and Week 6

07

Results

Posted Oct 25, 2019
Limitations and caveats
The study was short in duration. It is possible that this was not an adequate amount of time to observe changes in our primary outcomes. In addition, the small sample size may have reduced effect size, thus hindering our capacity to detect changes.

Participant flow

Participant flow — Overall Study
MilestoneMediterranean Lemonade ConsumptionGreen Tea ConsumptionFlavored Water Consumption
Started211910
Completed181610
Not completed330

Outcome measures

PrimaryStudy Recruitment: Interest in Participation

The number of Hispanic adults who contact the researchers and express interest in participation.

Time frame:
Baseline
Reported as:
Count of participants · Participants
Study Recruitment: Interest in Participation
ParticipantsInterest in Participation.
Study Recruitment: Interest in Participation279
PrimaryStudy Recruitment: Screened for Eligibility

The number of Hispanic adults screened for eligibility

Time frame:
Baseline
Reported as:
Count of participants · Participants
Study Recruitment: Screened for Eligibility
ParticipantsStudy Recruitment: Screened for Eligibility
Study Recruitment: Screened for Eligibility236
PrimaryStudy Recruitment: Eligibility

The number of Hispanic adults eligible for study inclusion.

Time frame:
Baseline
Reported as:
Count of participants · Participants
Study Recruitment: Eligibility
ParticipantsStudy Recruitment: Eligibility
Study Recruitment: Eligibility104
PrimaryStudy Recruitment: Ineligibility

The number of Hispanic adults ineligible for study inclusion.

Time frame:
Baseline
Reported as:
Count of participants · Participants
Study Recruitment: Ineligibility
ParticipantsStudy Recruitment: Ineligibility
Study Recruitment: Ineligibility132
PrimaryEnrollment

The number of Hispanic adults enrolled in the study.

Time frame:
Baseline
Reported as:
Count of participants · Participants
Enrollment
ParticipantsEnrollment
Enrollment52
PrimaryRetention

Retention will be measured as the number of participants who remain in the study at 6 weeks.

Time frame:
Week 6
Reported as:
Count of participants · Participants
Retention
ParticipantsRetention
Retention44
PrimaryTreatment Satisfaction

Participants will be asked to rate their overall satisfaction (1- low; 4-high) with the intervention for changing dietary patterns at Week 6 and if they would recommend the program to others.

Time frame:
Week 6
Reported as:
Mean · units on a scale
Treatment Satisfaction
units on a scaleTreatment Satisfaction Flavored WaterTreatment Satisfaction Mediterranean LemonadeTreatment Satisfaction Green Tea
Treatment Satisfaction3.3 ± 1.13.4 ± 0.93.3 ± 1.0
SecondaryChange in Total Cholesterol (Baseline and Week 6)

Fasting blood samples (venipuncture) will be collected for the purpose of examining changes in total cholesterol.

Time frame:
Baseline and Week 6
Reported as:
Mean · mg/dl
Change in Total Cholesterol (Baseline and Week 6)
mg/dlChange in Total Cholesterol Flavored WaterChange in Total Cholesterol Mediterranean LemonadeChange in Total Cholesterol Green Tea
Change in Total Cholesterol (Baseline and Week 6)-13.2 (-30.2 to 3.8)-1.67 (-14.2 to 10.9)-3.9 (-17.2 to 9.4)
SecondaryChange in Fasting Glucose (Baseline and Week 6)

Fasting blood samples (venipuncture) will be collected for the purpose of examining changes in glucose.

Time frame:
Baseline and Week 6
Reported as:
Mean · mg/dl
Change in Fasting Glucose (Baseline and Week 6)
mg/dlChange in Fasting Glucose Flavored WaterChange in Fasting Glucose Mediterranean LemonadeChange in Fasting Glucose Green Tea
Change in Fasting Glucose (Baseline and Week 6)-1.40 (-5.0 to 2.2)5.2 (2.6 to 7.9)3.3 (0.58 to 6.4)
SecondaryChange in Hemoglobin A1C (Baseline and Week 6)

Fasting blood samples (venipuncture) were collected for the purpose of examining changes in hemoglobin A1C.

Time frame:
Baseline and Week 6
Reported as:
Mean · % of Hemoglobin A1C
Change in Hemoglobin A1C (Baseline and Week 6)
% of Hemoglobin A1CChange in Hemoglobin A1C Flavored WaterChange in Hemoglobin A1c Mediterranean LemonadeChange in Hemoglobin A1c Green Tea
Change in Hemoglobin A1C (Baseline and Week 6)-0.02 (-0.14 to 0.1)0.05 (-0.04 to 0.14)0.04 (-0.06 to 0.14)
SecondaryChange in Body Weight (Baseline and Week 6)

Body weight was measured on a digital scale to assess change in body weight over the intervention period.

Time frame:
Baseline and Week 6
Reported as:
Mean · kg
Change in Body Weight (Baseline and Week 6)
kgChange in Body Weight Flavored WaterChange in Body Weight Mediterranean LemonadeChange in Body Weight Green Tea
Change in Body Weight (Baseline and Week 6)-1.8 (-2.9 to -0.55)-0.12 (-1.0 to 0.8)-0.36 (-1.6 to 1.8)

Adverse events

Collected over 1 year (August 2016-August 2017). Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Mediterranean Lemonade Consumption0/21 (0%)0/21 (0%)2/21 (9.5%)
Green Tea Consumption0/19 (0%)0/19 (0%)0/19 (0%)
Flavored Water Consumption0/10 (0%)0/10 (0%)0/10 (0%)
Most frequent other events
Most frequent other events
EventMediterranean Lemonade ConsumptionGreen Tea ConsumptionFlavored Water Consumption
Gastrointestinal DistressGastrointestinal disorders2/210/190/10

Baseline characteristics

Age, Continuous
Age, Continuous(years)Flavored WaterMediterranean LemonadeGreen TeaTotal
Mean39.0 ± 7.144.5 ± 9.548.1 ± 10.944.7 ± 10.1
Sex: Female, Male
Sex: Female, Male(Participants)Flavored WaterMediterranean LemonadeGreen TeaTotal
Female8161539
Male25411
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Flavored WaterMediterranean LemonadeGreen TeaTotal
Mexican4111530
Mexican-American46313
South/Central American2103
Other Spanish, Hispanic, Latino0202
Missing0112
Region of Enrollment
Region of Enrollment(Participants)Flavored WaterMediterranean LemonadeGreen TeaTotal
United States10211950
Total Cholesterol
Total Cholesterol(mg/dl)Flavored WaterMediterranean LemonadeGreen TeaTotal
Mean182.7 ± 31.6190.5 ± 45.3200.1 ± 32.8192.6 ± 38.2
Fasting Glucose
Fasting Glucose(mg/dl)Flavored WaterMediterranean LemonadeGreen TeaTotal
Mean89.8 ± 9.893.0 ± 12.393.7 ± 12.392.6 ± 11.7
Hemoglobin A1C
Hemoglobin A1C(% of Hemoglobin A1C)Flavored WaterMediterranean LemonadeGreen TeaTotal
Mean5.37 ± 0.285.52 ± 0.315.46 ± 0.395.47 ± 0.34
Body Weight
Body Weight(kg)Flavored WaterMediterranean LemonadeGreen TeaTotal
Mean99.1 ± 27.997 ± 17.789.9 ± 15.194.7 ± 19.2
08

Study locations

1 site
  • University of Arizona Collaboratory for Metabolic Disease Prevention and Treatment
    Tucson, Arizona 85714, United States
09

References and documents

Publications

  • Ogden CL, Carroll MD, Kit BK, Flegal KM. Prevalence of childhood and adult obesity in the United States, 2011-2012. JAMA. 2014 Feb 26;311(8):806-14. doi: 10.1001/jama.2014.732. PubMed 24570244 ↗
  • Zheng XX, Xu YL, Li SH, Liu XX, Hui R, Huang XH. Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials. Am J Clin Nutr. 2011 Aug;94(2):601-10. doi: 10.3945/ajcn.110.010926. Epub 2011 Jun 29. PubMed 21715508 ↗
  • Hakim IA, Hartz V, Harris RB, Balentine D, Weisgerber UM, Graver E, Whitacre R, Alberts D. Reproducibility and relative validity of a questionnaire to assess intake of black tea polyphenols in epidemiological studies. Cancer Epidemiol Biomarkers Prev. 2001 Jun;10(6):667-78. PubMed 11401918 ↗
  • Garcia DO, Morrill KE, Aceves B, Valdez LA, Rabe BA, Bell ML, Hakim IA, Martinez JA, Thomson CA. Feasibility and acceptability of a beverage intervention for Hispanic adults: results from a pilot randomized controlled trial. Public Health Nutr. 2019 Mar;22(3):542-552. doi: 10.1017/S1368980018003051. Epub 2018 Nov 19. PubMed 30451147 ↗
  • Morrill KE, Aceves B, Valdez LA, Thomson CA, Hakim IA, Bell ML, Martinez JA, Garcia DO. Feasibility and acceptability of a beverage intervention for Hispanic adults: a protocol for a pilot randomized controlled trial. Nutr J. 2018 Feb 9;17(1):16. doi: 10.1186/s12937-018-0329-y. PubMed 29426328 ↗

Study documents

  • Protocol and statistical analysis plan · Nov 1, 2017

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jun 2016 to primary completion in Aug 2017, 14 months.

Results were first posted in Oct 2019, 2 years 2 months after primary completion.

Of 2,253 non-industry interventional studies with no phase under Obesity, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 50. This study's 14 months is below that.

Counting every sponsor, half of 2,351 studies reached it within 26 months; a quarter within 11 and three quarters within 48.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 19, 2016
First posted
Sep 22, 2016
StartActual
Jun 2016
Primary completionActual
Aug 2017
CompletionActual
Aug 2017
Results first posted
Oct 25, 2019
Last update
Oct 25, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 25, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02911753
Responsible party
Sponsor
First posted
Sep 22, 2016
Start date
Jun 2016
Primary completion
Aug 2017
Completion
Aug 2017
Results posted
Oct 25, 2019
Last update
Oct 25, 2019

Study contacts

David O Garcia, PhD
principal investigator · University of Arizona

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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