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This study is being done to determine that carefully designed spice mixtures can override any taste aversion to brassica vegetables, increase consumption of vegetable dishes which include brassica vegetables.
This study is to determine the liking of vegetables, intentions to consume vegetables and differences in responses in consumption of three individual vegetables including: broccoli florets, cauliflower florets, baby spinach with and without spices added by measuring: (1) the actual intake of blanched dishes of vegetables using a modified Universal Eating Monitor when dishes are eaten plain or with added spices in random order; and (2) level of eating by baseline eating restraint using the Three Factor Eating Questionnaire (TFEQ).
This study will be conducted in healthy overweight subjects (30-60 years, Body Mass Index >25 and <30). A total of 20 subjects will be recruited (10 men and 10 women). Subjects will be further stratified by whether their level of restrained eating (10 high and 10 low restraint in each group). All participants will complete a general recruitment questionnaire which incorporates the TFEQ (Stunkard & Messick, 1985, Cappelleri 2009) along with measures of food and drink preferences and allergies. To ensure large differences in restraint between groups, subjects will be pre-selected depending on their score on the TFEQ cognitive restraint scale, with scores greater than two defined as high restraint (HR), and two or less than two as low restraint (LR). An equal number of high restraint and low restraint eaters will be tested.
Three different vegetables with or without spices given a total of 6 dishes will be tested in 6 visits per subject. The order in which each participant will be presented with the spiced or plain vegetables is randomized. Participants will be presented with a tray containing one of the three different vegetables served as a buffet in containers. As each subject ingests the dish with or without spices the rate of eating and amount eaten will be measured using a computer-based system modified from the Universal Eating Monitor.
Broccoli will be seasoned with pre-prepared spice mix containing garlic powder (0.7g), onion powder (0.7g), black pepper (0.25g) and basil leaves (0.12g); cauliflower (300g) with garlic (0.1g), dill weed (0.12g), onion (0.05g) and black pepper (0.05g); and spinach (300g) with dried chervil (0.07g), dried chives (0.13g), garlic (0.4g) and onion (0.4g).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Vegetable Intake with Spices Added | Experimental | Subjects consuming vegetables with mixed-spices added. |
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| Vegetable Intake without Spices Added | Active Comparator | Subjects consuming vegetables without spice. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Food consumption | Other | Cooked vegetables with spices or without spices |
|
| Measure | Description | Time Frame |
|---|---|---|
| Differences Between Plain and Spiced Vegetables Intake | Vegetable intake (grams) was measured while ingesting using an Universal Eating Monitor integrating a hidden weighing apparatus with specialized data collection software to analyze human eating. | 1 day |
| Measure | Description | Time Frame |
|---|---|---|
| Difference in Broccoli Intake With or Without Spice Among Higher Restraint Eaters and Low Restraint Eaters | Twenty subjects were categorized based on their score on the Three-Factor Eating Questionnaire with score greater than 2 defined as high restraint (HR), and 2 or less defined as low restraint (LR) eaters. | 1 day |
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Inclusion Criteria:
c. Subjects must read and sign the Institutional Review Board-approved written informed consent prior to the initiation of any study specific procedures or enrollment. A subject will be excluded for any condition that might compromise the ability to give truly informed consent.
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Exclusion Criteria:
Any history of gastrointestinal disease except for appendectomy
Any subject with a history of diabetes mellitus, or other serious medical condition, such as chronic hepatic or renal disease, bleeding disorder, congestive heart disease, chronic diarrhea disorders, myocardial infarction, coronary artery bypass graft, angioplasty within 6 months prior to screening, current diagnosis of uncontrolled hypertension (defined as systolic BP>160mmHg, diastolic BP>95mmHg), active or chronic gastrointestinal disorders, bulimia, anorexia, or endocrine diseases (except thyroid disease requiring medication) as indicated by medical history or routine physical examination.
Any subject allergic to spice or vegetables
Any subject who currently uses tobacco products.
Any subject who participates in vigorous physical activity on a regular basis.
Any subject who is unable or unwilling to comply with the study protocol.
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| Result | Li, Z. , Krak, M. , Zerlin, A. , Brahe, L. , Rheinwald-Jones, A. , Thames, G. , Zhang, Y. , Tseng, C. and Heber, D. (2015) The Impact of Spices on Vegetable Consumption: A Pilot Study. Food and Nutrition Sciences, 6, 437-444. |
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Twenty subjects completed a general recruitment questionnaire were recruited. They were categorized based on their score on the Three-Factor Eating Questionnaire with score greater than 2 defined as high restraint eaters, and 2 or less defined as low restraint eaters. First Intervention was broccoli, second was cauliflower and third was spinach.
The enrollment period was 11/2012 - 6/2013. The enrollment took place in a private setting the clinic located at the site.
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| ID | Title | Description |
|---|---|---|
| FG000 | No Spice First, Then Spice | Subjects receiving plain vegetable, then vegetable with spices added |
| FG001 | Spice First, Then no Spice | Subjects receiving vegetable with mixed-spices added, then plain vegetable |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| First Intervention |
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| Second Intervention |
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| Third Intervention |
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| ID | Title | Description |
|---|---|---|
| BG000 | No Spice First, Then Spice | Subjects consumed each vegetable without spice first and then with spice mix added |
| BG001 | Spice First, Then No Spice | Subjects consumed each vegetable with spice mix added first and then without spice |
| Units | Counts |
|---|---|
| Participants |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Differences Between Plain and Spiced Vegetables Intake | Vegetable intake (grams) was measured while ingesting using an Universal Eating Monitor integrating a hidden weighing apparatus with specialized data collection software to analyze human eating. | One female low restraint eater produced irregular data that was removed from analysis population. One male high restraint eater data was removed too to obtain equal number. | Posted | Mean | Standard Deviation | gram | 1 day |
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Adverse event data was collected over one day period for each intervention
Participants were monitored and questioned regarding the occurrence and nature of any adverse experiences
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Broccoli With Spices | Subjects consumed broccoli with spices added. |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Zhaoping Li, Professor | Center for Human Nutrition, Department of Medicine, UCLA David Geffen School of Medicine | 310-206-1987 | zli@mednet.ucla.edu |
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| BG002 | Total | Total of all reporting groups |
| Participants |
| No |
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| Sex: Female, Male | Count of Participants | Participants |
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| Participants |
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| Secondary | Difference in Broccoli Intake With or Without Spice Among Higher Restraint Eaters and Low Restraint Eaters | Twenty subjects were categorized based on their score on the Three-Factor Eating Questionnaire with score greater than 2 defined as high restraint (HR), and 2 or less defined as low restraint (LR) eaters. | Posted | Mean | Standard Deviation | grams | 1 day |
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| 0 |
| 20 |
| 0 |
| 20 |
| EG001 | Broccoli No Spices | Subjects consumed broccoli without spices. | 0 | 20 | 0 | 20 |
| EG002 | Cauliflower With Spices | Subjects consumed cauliflower with spices added. | 0 | 20 | 0 | 20 |
| EG003 | Cauliflower No Spices | Subjects consumed cauliflower without spices. | 0 | 20 | 0 | 20 |
| EG004 | Spinach With Spices | Subjects consumed spinach with spices added. | 0 | 20 | 0 | 20 |
| EG005 | Spinach No Spices | Subjects consumed spinach without spices. | 0 | 20 | 0 | 20 |
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