MoodNCT01725425
The Effect of Portion Sizes on Mood
A study testing Increase Portion Size, Decrease Portion Size and Mixed Portions in people with Mood and Eating Patterns, run by The University of Tennessee, Knoxville at 1 site in United States.
Trial summary
The purpose of this study is to investigate whether different portion sizes will effect overall mood. Read more about this study
- Who is it for?
- Ages 18 to 35 yearsHealthy volunteers can take part
- Conditions the study is for
- Mood, Eating Patterns
- What is being tested?
- Increase Portion Size, Decrease Portion Size and Mixed Portions
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 25 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2012to 31 Dec 2025
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 35 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Age 18-35
- have a body mass index of 18.5 and 24.9 kg/m^2
- be an unrestrained eater( scoring less than 12 on the Three Factor Eating Questionnaire)
- Report Being a non-smoker
Who cannot join
- currently pregnant or nursing
- report being an athlete in training
- currently taking any medications that affect appetite or food intake
- Have a medical condition affecting eating or are currently following a therapeutic diet
- Report disliking foods used in the investigation
- Report having allergies to foods used in the investigation
Trial locations and contacts
1 site in 1 country.
United States1 site
The University of Tennessee-Knoxville
Knoxville, Tennessee, 37996-1920
About this study
Official title: The Impact of Portion Size of Foods on Mood in Normal Weight Adults 18-35
The purpose of this study is to investigate whether different portion sizes will effect overall mood.
Read the detailed description
The objective of this investigation is to determine whether participants will have a change in mood based on the portion size of foods served. The specific aims of the study are:
- Determine the effect of increasing portion sizes on mood.
- Determine the effect of decreasing portion sizes on mood.
- Conditions
- Mood, Eating Patterns
- Being tested
- Control, Increase Portion Size, Decrease Portion Size, Mixed Portions
- Keywords
- snack food (chips), fruit (red grapes) consumed in each condition, mood
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ControlOther
The control is designed to determine average mood.
Increase Portion SizeOther
The purpose is to determine whether a change in mood will occur.
Decrease Portion SizeOther
The purpose is to determine whether a change in mood will occur.
Mixed PortionsOther
The purpose is to determine if a change in mood will occur.
| Study group | Role | What they receive |
|---|---|---|
| Control | Experimental | Participants will receive equal amounts of foods. Receives: Other: Control |
| Increase Portion Size | Experimental | Participants will receive increased portion sizes. Receives: Other: Increase Portion Size |
| Decrease Portion Sizes | Experimental | Participants will receive decreased portion sizes. Receives: Other: Decrease Portion Size |
| Mixed Portion Sizes | Experimental | Participants will receive mixed portion sizes. Receives: Other: Mixed Portions |
What is being measured
The primary outcome is the main question the study is designed to answer.
Total grams of snack food consumed
The snack food consumed in this investigation is Lays Potato Chips (Frito-Lay Inc., Plano, TX). Participants will be provided 50 or 100 grams of this food at all sessions depending on which condition they are randomized into. The chips provided to participants in each condition will be measured in grams to the tenth decimal point on an electronic food scale (Denver Instrument Co., Arvada, CO) before and after the session. The weight of the container will also be measured. Total grams of chips consumed during the session will be determined by subtracting pre- and post-consumption weight of the chips.
Measured: 1 year
Secondary outcomes (1)
Total grams of fruit consumed
The fruit used in this investigation is red grapes. Participants will be provided 100 grams or 150 grams of red grapes depending on which of the four groups they are participating in. Each individual will go through all four conditions in this investigation. Fruit provided to participants in each condition will be measured in grams to the tenth decimal point on an electronic food scale (Denver Instrument Co., Arvada, CO) before and after the session. The weight of the container will also be measured. Total grams of fruit consumed during the session will be determined by subtracting pre- and post-consumption weight of fruit.
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Nov 2012 (estimated)
- Study startOct 2012
- Primary completion31 Dec 2018
- Study completion31 Dec 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for MoodStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 25 participants (estimated)
Sponsor and investigators
- Lead sponsor
- The University of Tennessee, Knoxville
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hollie Raynor, The University of Tennessee, Knoxville
- Investigators
- Hollie Raynor, PhD, Principal investigator, University of Tennessee
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01725425
- Sponsor's protocol ID
- 8964B
- Status last verified
- Apr 2025
- First submitted
- 8 Nov 2012
- Last updated
- 3 Apr 2025
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 3 Apr 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Impact of Portion Size of Foods on Mood in Normal Weight Adults 18-35
- ClinicalTrials.gov ID
- NCT01725425
- Acronym / sponsor ID
- 8964B
- Conditions
- Mood, Eating Patterns
- Keywords
- snack food (chips), fruit (red grapes) consumed in each condition, mood
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 25 participants (estimated)
- Lead sponsor
- The University of Tennessee, KnoxvilleUniversity, hospital or other
- Study start
- Oct 2012 (actual)
- Primary completion
- 31 Dec 2018 (actual)
- Study completion
- 31 Dec 2025 (estimated)
- First posted
- 12 Nov 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to investigate whether different portion sizes will effect overall mood.
Detailed description
The objective of this investigation is to determine whether participants will have a change in mood based on the portion size of foods served. The specific aims of the study are:
- Determine the effect of increasing portion sizes on mood.
- Determine the effect of decreasing portion sizes on mood.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (participant)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Control | Experimental | Other: ControlParticipants will receive equal amounts of foods. |
| Increase Portion Size | Experimental | Other: Increase Portion SizeParticipants will receive increased portion sizes. |
| Decrease Portion Sizes | Experimental | Other: Decrease Portion SizeParticipants will receive decreased portion sizes. |
| Mixed Portion Sizes | Experimental | Other: Mixed PortionsParticipants will receive mixed portion sizes. |
Who may qualify
- Ages
- 18 to 35 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Age 18-35
- have a body mass index of 18.5 and 24.9 kg/m^2
- be an unrestrained eater( scoring less than 12 on the Three Factor Eating Questionnaire)
- Report Being a non-smoker
Key exclusion criteria (6 listed)
- currently pregnant or nursing
- report being an athlete in training
- currently taking any medications that affect appetite or food intake
- Have a medical condition affecting eating or are currently following a therapeutic diet
- Report disliking foods used in the investigation
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ControlThe control is designed to determine average mood. | Other | Control |
| Increase Portion SizeThe purpose is to determine whether a change in mood will occur. | Other | Increase Portion Size |
| Decrease Portion SizeThe purpose is to determine whether a change in mood will occur. | Other | Decrease Portion Sizes |
| Mixed PortionsThe purpose is to determine if a change in mood will occur. | Other | Mixed Portion Sizes |
Primary outcome
Total grams of snack food consumed
Time frame: 1 year
The snack food consumed in this investigation is Lays Potato Chips (Frito-Lay Inc., Plano, TX). Participants will be provided 50 or 100 grams of this food at all sessions depending on which condition they are randomized into. The chips provided to participants in each condition will be measured in grams to the tenth decimal point on an electronic food scale (Denver Instrument Co., Arvada, CO) before and after the session. The weight of the container will also be measured. Total grams of chips consumed during the session will be determined by subtracting pre- and post-consumption weight of the chips.
1 secondary outcome
Total grams of fruit consumed
Time frame: 1 year
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Apr 2025.
Related trials for Mood
RecruitingObservational study
Psychotherapy for Irritability in Youth: Comparing Active Treatment to Nonactive Psychoeducation Supportive Psychotherapy
Irritability, Disruptive Mood Dysregulation Disorder
RecruitingPhase 1
Open-Label Psilocybin Study in Transdiagnostic Population
Transdiagnostic, Depression - Major Depressive Disorder
Not yet recruitingPhase 2
Assessing of Behavioral Risk and Response to Electromagnetic and Psychedelic Therapies
PTSD, PTSD - Post Traumatic Stress Disorder
RecruitingPhase 2
A Study to Evaluate TNX-102 SL Monotherapy Versus Placebo in Participants With Major Depressive Disorder (MDD)
Major Depressive Episode (MDE), Major Depressive Disorder (MDD)
RecruitingPhase 1
Mechanism of Action Underlying Ketamine's Antidepressant Effects: The AMPA Throughput Theory in Patients With Treatment-Resistant Major Depression
Depression, Major Depressive Disorder
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Hollie Raynor, PhD principal investigator
University of Tennessee
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Increase Portion Size, Decrease Portion Size and Mixed Portions in people with Mood and Eating Patterns, run by The University of Tennessee, Knoxville 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 4 inclusion and 6 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: under way, not looking for participants, as of the sponsor's last update on 3 Apr 2025. 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?
This study is still under way. Results are not available in the source record yet.
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?
Total grams of snack food consumed (time frame: 1 year). 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 3 Apr 2025.