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ObesityNCT01115088

Effects of Stevia on Satiety and Eating Attitudes in Healthy, Overweight and Obese Adults

A study testing Aspartame, Sucrose and Stevia in people with Obesity and Type 2 Diabetes, run by Pennington Biomedical Research Center at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to test the effects that three different types of sweeteners have on food intake, hunger and satiety levels, as well as insulin and glucose measures. Read more about this study

Who is it for?
Ages 18 to 45 yearsHealthy volunteers can take part
Conditions the study is for
Obesity, Type 2 Diabetes
What is being tested?
Aspartame, Sucrose and Stevia
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
1 siteUnited States
Study dates
Jan 2006to Apr 2010
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy and have a body mass index > 30 kg/m2 and < 39.9 kg/m2, or have a body mass index > 20 kg/m2 and < 24.9 kg/m2
  • If BMI is between 30 and 39.9, waist circumference must be > 36 for women and > 40 for men.
  • Age 18 to 45 years
  • Nonsmokers
  • Willing to consume meat products
  • Women on monophasic oral contraceptives or who have physiologically controlled cycles

Who cannot join

  • A history of diabetes, cardiovascular disease, or other chronic illnesses
  • Presence of an eating disorder including Anorexia and/or Bulimia Nervosa
  • Other health problems that might interfere with your ability to participate in the study
  • Taking medications, other than monophasic birth control or monophasic (same dose every day) hormone replacement therapy and allergy medication
  • Taking allergy medication for a period of time less than 6 months
  • Dislike of or allergy to foods/sweeteners (Sucrose, Stevia, or Aspartame) used in test meals
Show all 9Show fewer
  • Smokers
  • High scores on the Dietary Restraint, Disinhibition, and Perceived Hunger scales of the Three Factor Eating Questionnaire
  • Use of oral contraceptives other than monophasic (same dose every day) contraceptives

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Pennington Biomedical Research Center

    Baton Rouge, Louisiana, 70808

Other trials in United States

About this study

Official title: Effects of Stevia on Satiety and Eating Attitudes in Healthy, Overweight and Obese Adults: A Pilot Study

The purpose of this study is to test the effects that three different types of sweeteners have on food intake, hunger and satiety levels, as well as insulin and glucose measures. The study of whether food or beverages containing Stevia influence food intake to a greater extent than food or beverages sweetened with Aspartame or Sucrose. Also, examining whether taste preference and taste sensitivity influence food intake.

Read the detailed description

Expected time in this study will be approximately 24 hours spread over the course of one initial screening visit and three test days during which you complete food tests at the Pennington Center.

Screening visit (Duration is 3 hours)

  • You will initially be asked to fill out psychological questionnaires to assess your eating habits, food cravings, and preference for foods (i.e., tea and crackers with cream cheese) that will be provided to you in this study.
  • You will also be asked to complete two taste tests during this visit. The first taste test will be sodium chloride (table salt) followed by PROP (an extremely low dose of hyperthyroid medication) sodium chloride (table salt).
  • You will be required to provide a blood sample (19 mL or 1.3 tablespoons) to check glucose and insulin levels.
  • If you are selected to be a participant for this study, you will receive a brief medical evaluation during which you will be weighed, your height will be measured, and your pulse and blood pressure will be taken. You will be interviewed about your medical history and potential obstacles for completing the study. If you are female, a brief interview will be conducted to determine your menstrual cycle phase. Total length of time will be approximately three hours for the screening visit.

First Food Test Day (Duration is 7- 9 hours. You'll arrive after having fasted for 12 hrs.) For females, all test meal days will be scheduled during their luteal phase. • Breakfast: During your first food test day, you will be asked to come to the Pennington Center at any time between the hours of 7:00 A.M. - 8:30 A.M. and consume a standard breakfast of Cheerios, milk, orange juice, toast, butter, and jelly. You will then be free to leave but will be asked to return 3.5 hours later. When your return, you will be sent to our inpatient unit for a blood draw, which will test your level of insulin and glucose (total of 25 mL or 1.67 tablespoons). You will then be asked to rate your appetite on a computer using a visual analog scale (VAS). After completing these VAS ratings, you will be provided with an appetizer of 5 ounces of cold tea and 6 crackers with cream cheese. Both the tea and the cream cheese will be sweetened with one of the following sweeteners: Aspartame, Sucrose, or Stevia. After consuming this appetizer, you will be asked to complete another set of VAS ratings, which again ask you about your appetite, as well as the sweetness of the appetizer. Test times will be constant for all visits. Approximately twenty minutes after consuming this appetizer, your insulin and glucose levels will again be tested and you will complete another set of VAS ratings before your lunch meal. You will be required to consume breakfast at the same time for all three visits. For example, if you come at 7:00 A.M. on your first test day, you will be required to come in at 7:00 A.M. on your next two test days.

  • Lunch: After completing VAS ratings before lunch, you will be provided with a lunch consisting of sandwiches, chips, and cookies. Your lunch meal will be served approximately 4 hours after your breakfast meal. Your eating behavior may be monitored by weight of the food consumed and/or by video camera/tape. You may eat as much or as little of the lunch as you wish.
  • After Lunch: After you finish your lunch meal, you will be asked to complete post meal VAS ratings. Your insulin and glucose will be measured on the three occasions after lunch: 30 minutes after lunch, one hour after lunch, and two hours after lunch for a total of 5 blood draws (total of 25 mL or 1.67 tablespoons). You will also be asked to complete VAS ratings 30 minutes after lunch, and every hour for the next four hours. You will spend the afternoon at the Pennington center to ensure that blood draws and VAS ratings occur at the appropriate time intervals. During the afternoon you will be free to read, do paperwork brought from home or work, or watch movies that will be provided to you by the Center.
  • Dinner:

Four hours after the test lunch, you will be provided with another appetizer of 5 ounces of cold tea and crackers with cream cheese. Both the tea and the cream cheese will be sweetened with one of the following sweeteners: Stevia, sucrose, or Aspartame. You will complete VAS ratings before and after this appetizer, as well as before and after your dinner meal (4.5 hours after lunch), during which you will be instructed to eat as much or as little of any of the items presented as you want. Your eating behavior may be monitored by weight of the food consumed and/or by video camera/tape. After you complete VAS questions after the evening meal, you will have fulfilled the requirements of the first food test day. However, you will be asked not to consume any food or caloric beverages for three hours following your dinner meal. You will be asked to report any adverse events from this day at this visit.

Second Food Test Day (Duration is 7-9 hours. You'll arrive after having fasted for 12 hrs.) • On your second food test day, you will complete the same procedures and meal tests as you did during the first food test day. However, the type of sweetener used in your tea and crackers with cream cheese will differ from the type of sweetener you received on your first food test day. You will be asked to report any adverse events from this day, as well as previous visits, at this visit.

Third Food Test Day (Duration is 7-9 hours. You'll arrive after having fasted for 12 hrs.)

  • On your third food test day, you will complete the same procedures and meal tests as you did during your two previous food test days. However, the type of sweetener used in your tea and crackers with cream cheese will differ from the type of sweetener you received on previous visits. You will also be asked to report any adverse events from this day, as well as previous visits, at this visit. We will also follow up by phone regarding adverse events following your third visit. Table 1 presents a schedule of the procedures that will take place at each of the study visits.
Being tested
Aspartame, Sucrose, Stevia
Medical subject headings
Obesity, Diabetes Mellitus, Type 2

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AspartameDietary supplement

    Also called equal sweetener

    The morning breakfast after a 12-h fast and consumed a standard 469 kcal breakfast consisting of cereal, milk, toast with butter, and orange juice. Tea and crackers with cream cheese sweetened with stevia Whole Foods 365 Brand, aspartame equal sweetener, or sucrose participants consumed this preload 20 min before their test lunch and dinner meals. The Test lunch meal consisted of sandwiches, potato chips, and cookies, and the test dinner meal was a self-selected buffet-type meal (I.e., Macronutrient Self-Selection Paradigm) Geiselman et al,. 1998)

  • SucroseDietary supplement

    The morning breakfast after a 12-h fast and consumed a standard 469 kcal breakfast consisting of cereal, milk, toast with butter, and orange juice. Tea and crackers with cream cheese sweetened with stevia Whole Foods 365 Brand, aspartame equal sweetener, or sucrose participants consumed this preload 20 min before their test lunch and dinner meals. The Test lunch meal consisted of sandwiches, potato chips, and cookies, and the test dinner meal was a self-selected buffet-type meal (I.e., Macronutrient Self-Selection Paradigm) Geiselman et al,. 1998)

  • SteviaDietary supplement

    The morning breakfast after a 12-h fast and consumed a standard 469 kcal breakfast consisting of cereal, milk, toast with butter, and orange juice. Tea and crackers with cream cheese sweetened with stevia Whole Foods 365 Brand, aspartame equal sweetener, or sucrose participants consumed this preload 20 min before their test lunch and dinner meals. The Test lunch meal consisted of sandwiches, potato chips, and cookies, and the test dinner meal was a self-selected buffet-type meal (I.e., Macronutrient Self-Selection Paradigm) Geiselman et al,. 1998)

Study groups in NCT01115088
Study groupRoleWhat they receive
AspartameExperimentalFood or beverages containing Aspartame in comparison to Stevia or Sucrose
Receives: Dietary Supplement: Aspartame
SucroseExperimentalFood or beverages containing Sucrose in comparison to Aspartame or Stevia
Receives: Dietary Supplement: Sucrose
SteviaExperimentalFood or beverages containing Stevia in comparison to Aspartame or Sucrose
Receives: Dietary Supplement: Stevia

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Effects of stevia, aspartame, and sucrose on food intake, satiety, and postprandial glucose and insulin levels.

    Test whether preloads of tea and crackers with cream cheese sweetened with Stevia lover postprandial insulin levels compared to preloads of tea and crackers with cream cheese sweetened with Sucrose or Aspartame by measuring blood insulin and glucose levels immediately prior to the lunch preload,immediately before lunch test meal, and at thirty minutes, one hour, and two hours after the lunch test meal.

    Measured: 24 hours

Secondary outcomes (2)
  1. Hedonic ratings (appearance, aroma, flavor, texture and palatability)with Stevia sweetener compared to Sucrose or Aspartame

    Test whether preloads of tea and crackers with cream cheese sweetened with Stevia have different hedonic ratings compared to preloads of tea and crackers with cream cheese sweetened with Sucrose or Aspartame by examining hunger and satiety ratings after the preload.

    Measured: 24 hours

  2. Satiating effects by examining food consumption

    Test whether preloads of tea and crackers with cream cheese sweetened with stevia have different satiating effects compared to preloads of tea and crackers with cream cheese sweetened with Sucrose or Aspartame by examining food consumption 20 minutes and after lunch and dinner preloads, as well as total food consumption.

    Measured: 24 Hours

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 May 2010 (estimated)
  2. Study startJan 2006
  3. Primary completionApr 2010
  4. Study completionApr 2010

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Allocation
Randomised
Intervention model
Single group
Masking
Single blind
Who is masked
Participant
Enrolment
30 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01115088
Sponsor's protocol ID
PBRC 25030
Status last verified
Feb 2016
First submitted
29 Apr 2010
Last updated
12 Feb 2016
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A study testing Aspartame, Sucrose and Stevia in people with Obesity and Type 2 Diabetes, run by Pennington Biomedical Research Center at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 Feb 2016. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Effects of stevia, aspartame, and sucrose on food intake, satiety, and postprandial glucose and insulin levels. (time frame: 24 hours). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Feb 2016.

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