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The proposed pilot study will examine cooking as an intervention target for weight control in overweight adults. The study will also examine whether interventions designed to promote cooking at home can increase participants' sense of food agency, and overcome common barriers to cooking at home such as time scarcity and budget constrictions. The study will utilize a cooking pedagogy designed to not just teach participants the basics of cooking different foods, but how to be efficient, mindful cooks. If cooking class participation positively impacts diet and health outcomes, it will bolster the case for promoting cooking at home as a health behavior for multiple populations.
A two arm randomized control trial will examine whether the addition of an active cooking lesson versus a passive observed lesson to a behavioral weight loss intervention results in significantly greater weight loss. Additionally, the study will examine whether interventions designed to promote cooking at home can increase participants' sense of food agency, and overcome common barriers to cooking at home such as time scarcity and budget constrictions.
Overweight and obese but otherwise healthy participants (n=64) will be recruited. Recruitment and study initiation will occur in two waves. Wave 1 aims to recruit 32 individuals who will then be randomized to 1) a 24 week, 24 session group behavioral weight loss intervention with 12 bi-weekly cooking lessons; or, 2) the same 24 week, 24 session group behavioral weight loss intervention with 12 bi-weekly cooking demonstrations. Both groups get the same intervention and the same counselor delivered intervention elements; the presence of active cooking lessons vs. passive observed cooking demonstrations is the only difference between conditions. Assessments will be conducted at 0, 3 and 6 months. Wave 2 (n=32) will follow the same process as Wave 1 approximately two months after Wave 1 is initiated.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Active Intervention - Cooking | Experimental | Twelve cooking classes will be run every other week after the in-person weight loss meetings. These lessons will be patterned after Dr. Amy Trubek's cooking pedagogy and will be tailored for individuals specifically interested in weight loss. Classes will begin with a brief lecture on the day's topic, followed by a laboratory session. Participants work in teams of two in the Nutrition and Food Sciences (NFS) foods lab to actively practice skills and cook a meal. Subjects will receive recipes and information sheets that cover pantry supplies, grocery lists, knife skills and cooking equipment. Classes will be taught by a chef trained in the pedagogy by Dr. Trubek and participants will have the opportunity to sample the food they prepared at the end of class. |
|
| Demonstrations - Cooking | Active Comparator | The demonstration condition will serve as an "attention only" control. Previous research suggests that demonstrations of cooking have little to no impact on cooking behavior, therefore, cooking demonstrations can be used to "even out" the time and attention devoted to the active cooking participants without introducing bias into the study design. Subjects in the demonstration condition will also begin with a brief lecture on the day's lesson followed by a cooking demonstration that covers the same topics as the active intervention group. All participants will receive the same printed information and also have an opportunity to sample the prepared food at the end of class. The demonstrations will be led by the same chef as the active intervention group. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Active Intervention - Cooking | Behavioral | Key behavioral strategies to facilitate making sustained changes in dietary habits and activity patterns are introduced, promoted and reinforced throughout the program. In-person sessions facilitated by an interventionist provide the group meetings. The program provides 24 weekly facilitated group sessions over 6 months. In addition to attending weekly classes, participants will track food intake, exercise, and weight. Participants will share online tracking diaries with the group facilitator who will offer individualized feedback on individual progress. Twelve cooking classes will be run every other week after the in-person weight loss meetings. |
| Measure | Description | Time Frame |
|---|---|---|
| Weight Change | Weight loss from baseline at 24 weeks | 24 weeks |
| Change From Baseline in the Total HEI Score, as a Measure of Diet Quality Change | Difference in diet quality change between groups across assessments. Measured by Healthy Eating Index scores. The HEI includes 13 components that capture recommendations of the 2015-2020 Dietary Guidelines for Americans. There are two groupings of components:
Components are weighted equally and assigned a score of either 5 or 10. Scores as summed to determine total score. The minimum possible score is 0 and the maximum possible is 100. Adequacy Components: Total Fruits 5 Whole Fruits 5 Total vegetables 5 Greens and beans 5 Whole grains 10 Dairy 10 Total protein foods 5 Seafood and plant proteins 5 Fatty acids 10 Moderation Components: Refined grains 10 Sodium 10 Added sugars 10 Saturated fats 10 | Baseline and 24 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Cooking and Food Practices Change - Total Score | Difference in baseline and end point Cooking and Food Provisioning Action Scale Total scores between groups. Structure subscale measures whether an individual thinks their cooking ability and skills are adequate. On a scale of 1-21, higher scores over time indicate improvement. | 24 weeks |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Jean R Harvey, PhD, RD | University of Vermont | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Vermont | Burlington | Vermont | 05405 | United States |
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| ID | Title | Description |
|---|---|---|
| FG000 | Active Intervention - Cooking | Twelve cooking classes will be run every other week after the in-person weight loss meetings. These lessons will be patterned after Dr. Amy Trubek's cooking pedagogy and will be tailored for individuals specifically interested in weight loss. Classes will begin with a brief lecture on the day's topic, followed by a laboratory session. Participants work in teams of two in the NFS foods lab to actively practice skills and cook a meal. Subjects will receive recipes and information sheets that cover pantry supplies, grocery lists, knife skills and cooking equipment. Classes will be taught by a chef trained in the pedagogy by Dr. Trubek and participants will have the opportunity to sample the food they prepared at the end of class. Active Intervention - Cooking: Key behavioral strategies to facilitate making sustained changes in dietary habits and activity patterns are introduced, promoted and reinforced throughout the program. In-person sessions facilitated by an interventionist provide the group meetings. The program provides 24 weekly facilitated group sessions over 6 months. In addition to attending weekly classes, participants will track food intake, exercise, and weight. Participants will share online tracking diaries with the group facilitator who will offer individualized feedback on individual progress. Twelve cooking classes will be run every other week after the in-person weight loss meetings. |
| FG001 | Demonstrations - Cooking | The demonstration condition will serve as an "attention only" control. Previous research suggests that demonstrations of cooking have little to no impact on cooking behavior, therefore, cooking demonstrations can be used to "even out" the time and attention devoted to the active cooking participants without introducing bias into the study design. Subjects in the demonstration condition will also begin with a brief lecture on the day's lesson followed by a cooking demonstration that covers the same topics as the active intervention group. All participants will receive the same printed information and also have an opportunity to sample the prepared food at the end of class. The demonstrations will be led by the same chef as the active intervention group. Demonstrations - Cooking: The Demonstrations group will receive the exact same behavioral weight loss intervention as the cooking group. The only difference is that this group will attend cooking demonstrations as opposed to actively cooking. |
| Title | Milestones | Reasons Not Completed | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
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| ID | Title | Description |
|---|---|---|
| BG000 | Active Intervention - Cooking | Twelve cooking classes will be run every other week after the in-person weight loss meetings. These lessons will be patterned after Dr. Amy Trubek's cooking pedagogy and will be tailored for individuals specifically interested in weight loss. Classes will begin with a brief lecture on the day's topic, followed by a laboratory session. Participants work in teams of two in the University of Vermont Nutrition and Food Sciences department foods lab to actively practice skills and cook a meal. Subjects will receive recipes and information sheets that cover pantry supplies, grocery lists, knife skills and cooking equipment. Classes will be taught by a chef trained in the pedagogy by Dr. Trubek and participants will have the opportunity to sample the food they prepared at the end of class. Active Intervention - Cooking: Key behavioral strategies to facilitate making sustained changes in dietary habits and activity patterns are introduced, promoted and reinforced throughout the program. In-person sessions facilitated by an interventionist provide the group meetings. The program provides 24 weekly facilitated group sessions over 6 months. In addition to attending weekly classes, participants will track food intake, exercise, and weight. Participants will share online tracking diaries with the group facilitator who will offer individualized feedback on individual progress. Twelve cooking classes will be run every other week after the in-person weight loss meetings. |
| Units | Counts |
|---|---|
| Participants |
|
| 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 | Weight Change | Weight loss from baseline at 24 weeks | Posted | Least Squares Mean | Standard Deviation | kilogram | 24 weeks |
|
Baseline to 6 months
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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 | Active Intervention - Cooking | Twelve cooking classes will be run every other week after the in-person weight loss meetings. These lessons will be patterned after Dr. Amy Trubek's cooking pedagogy and will be tailored for individuals specifically interested in weight loss. Classes will begin with a brief lecture on the day's topic, followed by a laboratory session. Participants work in teams of two in the NFS foods lab to actively practice skills and cook a meal. Subjects will receive recipes and information sheets that cover pantry supplies, grocery lists, knife skills and cooking equipment. Classes will be taught by a chef trained in the pedagogy by Dr. Trubek and participants will have the opportunity to sample the food they prepared at the end of class. Active Intervention - Cooking: Key behavioral strategies to facilitate making sustained changes in dietary habits and activity patterns are introduced, promoted and reinforced throughout the program. In-person sessions facilitated by an interventionist provide the group meetings. The program provides 24 weekly facilitated group sessions over 6 months. In addition to attending weekly classes, participants will track food intake, exercise, and weight. Participants will share online tracking diaries with the group facilitator who will offer individualized feedback on individual progress. Twelve cooking classes will be run every other week after the in-person weight loss meetings. |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Mattie Alpaugh | University of Vermont Department of Nutrition and Food Sciences | 8026569526 | malpaugh@uvm.edu |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Jun 14, 2019 | Dec 10, 2020 | Prot_SAP_001.pdf |
| ICF | No | No | Yes | Informed Consent Form | Nov 18, 2018 | Jun 16, 2020 | ICF_000.pdf |
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| ID | Term |
|---|---|
| D009765 | Obesity |
| ID | Term |
|---|---|
| D050177 | Overweight |
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
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The Behavioral Weight Loss Program: Investigators have developed and implemented a theory-based group-delivered behavioral weight control program in two previous studies that incorporates the elements of current thinking and empirical data on successful weight loss programs, including restricted calorie intake and increased physical activity. In addition to attending weekly classes, participants will track their food intake, exercise, and weight. Participants will share online tracking diaries with the group facilitator who will offer individualized feedback on progress.
The Cooking Program Active Intervention. Twelve cooking classes will be run every other week after the in-person weight loss meetings.
Demonstrations. The demonstration condition will serve as an "attention only" control. All participants will have an opportunity to sample the prepared food at the end of class. The demonstrations will be led by the same chef as the active intervention group.
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|
| Demonstrations - Cooking | Behavioral | The Demonstrations group will receive the exact same behavioral weight loss intervention as the cooking group. The only difference is that this group will attend cooking demonstrations as opposed to actively cooking. |
|
| Cooking and Food Practices Change - Structure Subscale |
Difference in baseline and end point Cooking and Food Provisioning Action Scale Structure subscale scores between groups. Structure subscale measures the ways in which external factors can either hinder or support an individual's cooking and provisioning actions. On a scale of 1-7, higher scores over time indicate improvement. |
| 24 weeks |
| Cooking and Food Practices Change - Attitude Subscale | Difference in baseline and end point Cooking and Food Provisioning Action Scale Attitude subscale scores between groups. Structure subscale measures an individual's affective stance towards food, cooking and provisioning in different areas. On a scale of 1-7, higher scores over time indicate improvement. | 24 weeks |
| Cooking and Food Practices Change - Self Efficacy Subscale | Difference in baseline and end point Cooking and Food Provisioning Action Scale Self Efficacy subscale scores between groups. Structure subscale measures whether an individual thinks their cooking ability and skills are adequate. On a scale of 1-7, higher scores over time indicate improvement. | 24 weeks |
| Cooking Frequency Change - Breakfast | Breakfast cooking frequency was assessed at baseline and 24 weeks using the cooking frequency subscale from the Cooking Perceptions/Attitudes/Confidence/Behaviors Survey. The scores range from a minimum of 0 to a maximum of 7 meals cooked during a one week period. | 24 weeks |
| Cooking Frequency Change - Lunch | Lunch cooking frequency was assessed at baseline and 24 weeks using the cooking frequency subscale from the Cooking Perceptions/Attitudes/Confidence/Behaviors Survey. The scores range from a minimum of 0 to a maximum of 7 meals cooked during a one week period. | 24 weeks |
| Cooking Frequency Change - Dinner | Dinner cooking frequency was assessed at baseline and 24 weeks using the cooking frequency subscale from the Cooking Perceptions/Attitudes/Confidence/Behaviors Survey. The scores range from a minimum of 0 to a maximum of 7 meals cooked during a one week period. | 24 weeks |
| Treatment Engagement- Attendance | Percent (of 24 possible) classes attended will be calculated to determine treatment engagement | 24 weeks |
| Treatment Engagement- Food Journaling Compliance | Percent of weekly food journals at least partially completed (an entry made during a seven day period) will be calculated to determine treatment engagement | Baseline to six months |
| BG001 | Demonstrations - Cooking | The demonstration condition will serve as an "attention only" control. Previous research suggests that demonstrations of cooking have little to no impact on cooking behavior, therefore, cooking demonstrations can be used to "even out" the time and attention devoted to the active cooking participants without introducing bias into the study design. Subjects in the demonstration condition will also begin with a brief lecture on the day's lesson followed by a cooking demonstration that covers the same topics as the active intervention group. All participants will receive the same printed information and also have an opportunity to sample the prepared food at the end of class. The demonstrations will be led by the same chef as the active intervention group. Demonstrations - Cooking: The Demonstrations group will receive the exact same behavioral weight loss intervention as the cooking group. The only difference is that this group will attend cooking demonstrations as opposed to actively cooking. |
| BG002 | Total | Total of all reporting groups |
| Participants |
|
| Age, Continuous | Mean | Standard Deviation | years |
|
| Sex: Female, Male | Count of Participants | Participants |
|
| Ethnicity (NIH/OMB) | Count of Participants | Participants |
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| Race/Ethnicity, Customized | Count of Participants | Participants |
|
| Region of Enrollment | Number | participants |
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| Education | Count of Participants | Participants |
|
| Marital Status | Count of Participants | Participants |
|
| Employment | Count of Participants | Participants |
|
| OG001 | Demonstrations - Cooking | The demonstration condition will serve as an "attention only" control. Previous research suggests that demonstrations of cooking have little to no impact on cooking behavior, therefore, cooking demonstrations can be used to "even out" the time and attention devoted to the active cooking participants without introducing bias into the study design. Subjects in the demonstration condition will also begin with a brief lecture on the day's lesson followed by a cooking demonstration that covers the same topics as the active intervention group. All participants will receive the same printed information and also have an opportunity to sample the prepared food at the end of class. The demonstrations will be led by the same chef as the active intervention group. Demonstrations - Cooking: The Demonstrations group will receive the exact same behavioral weight loss intervention as the cooking group. The only difference is that this group will attend cooking demonstrations as opposed to actively cooking. |
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|
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| Primary | Change From Baseline in the Total HEI Score, as a Measure of Diet Quality Change | Difference in diet quality change between groups across assessments. Measured by Healthy Eating Index scores. The HEI includes 13 components that capture recommendations of the 2015-2020 Dietary Guidelines for Americans. There are two groupings of components:
Components are weighted equally and assigned a score of either 5 or 10. Scores as summed to determine total score. The minimum possible score is 0 and the maximum possible is 100. Adequacy Components: Total Fruits 5 Whole Fruits 5 Total vegetables 5 Greens and beans 5 Whole grains 10 Dairy 10 Total protein foods 5 Seafood and plant proteins 5 Fatty acids 10 Moderation Components: Refined grains 10 Sodium 10 Added sugars 10 Saturated fats 10 | Posted | Least Squares Mean | Standard Deviation | points | Baseline and 24 weeks |
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| Secondary | Cooking and Food Practices Change - Total Score | Difference in baseline and end point Cooking and Food Provisioning Action Scale Total scores between groups. Structure subscale measures whether an individual thinks their cooking ability and skills are adequate. On a scale of 1-21, higher scores over time indicate improvement. | Posted | Least Squares Mean | Standard Error | score on a scale | 24 weeks |
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| Secondary | Cooking and Food Practices Change - Structure Subscale | Difference in baseline and end point Cooking and Food Provisioning Action Scale Structure subscale scores between groups. Structure subscale measures the ways in which external factors can either hinder or support an individual's cooking and provisioning actions. On a scale of 1-7, higher scores over time indicate improvement. | Posted | Mean | Standard Error | score on a scale | 24 weeks |
|
|
|
|
| Secondary | Cooking and Food Practices Change - Attitude Subscale | Difference in baseline and end point Cooking and Food Provisioning Action Scale Attitude subscale scores between groups. Structure subscale measures an individual's affective stance towards food, cooking and provisioning in different areas. On a scale of 1-7, higher scores over time indicate improvement. | Posted | Least Squares Mean | Standard Error | score on a scale | 24 weeks |
|
|
|
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| Secondary | Cooking and Food Practices Change - Self Efficacy Subscale | Difference in baseline and end point Cooking and Food Provisioning Action Scale Self Efficacy subscale scores between groups. Structure subscale measures whether an individual thinks their cooking ability and skills are adequate. On a scale of 1-7, higher scores over time indicate improvement. | Posted | Least Squares Mean | Standard Error | score on a scale | 24 weeks |
|
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|
|
| Secondary | Cooking Frequency Change - Breakfast | Breakfast cooking frequency was assessed at baseline and 24 weeks using the cooking frequency subscale from the Cooking Perceptions/Attitudes/Confidence/Behaviors Survey. The scores range from a minimum of 0 to a maximum of 7 meals cooked during a one week period. | Posted | Mean | Standard Error | meals cooked | 24 weeks |
|
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|
|
| Secondary | Cooking Frequency Change - Lunch | Lunch cooking frequency was assessed at baseline and 24 weeks using the cooking frequency subscale from the Cooking Perceptions/Attitudes/Confidence/Behaviors Survey. The scores range from a minimum of 0 to a maximum of 7 meals cooked during a one week period. | Posted | Least Squares Mean | Standard Error | meals cooked | 24 weeks |
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|
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| Secondary | Cooking Frequency Change - Dinner | Dinner cooking frequency was assessed at baseline and 24 weeks using the cooking frequency subscale from the Cooking Perceptions/Attitudes/Confidence/Behaviors Survey. The scores range from a minimum of 0 to a maximum of 7 meals cooked during a one week period. | Posted | Least Squares Mean | Standard Error | meals cooked | 24 weeks |
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| Secondary | Treatment Engagement- Attendance | Percent (of 24 possible) classes attended will be calculated to determine treatment engagement | Posted | Median | Inter-Quartile Range | percentage of classes attended | 24 weeks |
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| Secondary | Treatment Engagement- Food Journaling Compliance | Percent of weekly food journals at least partially completed (an entry made during a seven day period) will be calculated to determine treatment engagement | Posted | Median | Inter-Quartile Range | percentage of complete food journals | Baseline to six months |
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|
|
| 0 |
| 28 |
| 0 |
| 28 |
| 0 |
| 28 |
| EG001 | Demonstrations - Cooking | The demonstration condition will serve as an "attention only" control. Previous research suggests that demonstrations of cooking have little to no impact on cooking behavior, therefore, cooking demonstrations can be used to "even out" the time and attention devoted to the active cooking participants without introducing bias into the study design. Subjects in the demonstration condition will also begin with a brief lecture on the day's lesson followed by a cooking demonstration that covers the same topics as the active intervention group. All participants will receive the same printed information and also have an opportunity to sample the prepared food at the end of class. The demonstrations will be led by the same chef as the active intervention group. Demonstrations - Cooking: The Demonstrations group will receive the exact same behavioral weight loss intervention as the cooking group. The only difference is that this group will attend cooking demonstrations as opposed to actively cooking. | 0 | 28 | 0 | 28 | 0 | 28 |
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| D001835 |
| Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| Superiority |
| Mixed Models Analysis | <.001 | Superiority |
| Superiority |
| Mixed Models Analysis | .01 | Superiority |
| Superiority |
| Mixed Models Analysis | <.001 | Superiority |
| Superiority |
| Mixed Models Analysis | <.001 | Superiority |
| Superiority |
| Mixed Models Analysis | .02 | Superiority |
| Superiority |
| Mixed Models Analysis | <.001 | Superiority |
| Superiority |
| Mixed Models Analysis | .01 | Superiority |