Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
NA
45 participants
INTERVENTIONAL
2025-08-04
2026-07-31
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
CROSSOVER
BASIC_SCIENCE
SINGLE
Study Groups
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Perceived food uncertainty
Perceived food uncertainty
Participants remain unaware of both the scheduled time and the length of the next meal.
Perceived food certainty
Perceived food certainty
Participants are aware of both the scheduled time and the length of the next meal.
Interventions
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Perceived food uncertainty
Participants remain unaware of both the scheduled time and the length of the next meal.
Perceived food certainty
Participants are aware of both the scheduled time and the length of the next meal.
Eligibility Criteria
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Inclusion Criteria
* Legally competent/Consent to participate
* Language proficiency in German (native speaker, fluent)
* Physically and mentally healthy
* Body mass index (BMI) of 18.5 - 30 kg/m2
Exclusion Criteria
* Current use of hormonal intra-uterine devices (IUDs)
* Previous or current pregnancy
* Diagnosed psychological or metabolic disorder
* Former or current illnesses of:
1. Brain or mind (including anxiety disorders, depression, eating disorders, personality disorders, alcohol, drugs or drug or non-substance dependence, neurological disorders other than occasional headache, psychiatric or neurological abnomalities)
2. Heart or blood circulation/cardiovascular disease (myocardial infarction, stroke, hypertension, hypotension, having a pacemaker)
3. Gastro-intestinal disorders (e.g. colon diseases, irritable bowel syndrome, Crohn's disease)
4. Endocrine disorders (e.g. thyroid disorders)
5. Other serious past or present medical conditions (for example, metabolic syndrome, diabetes)
* Other serious health problems or current severe mental or physical stress.
* Blood clotting disorder
* Fear of drawing blood
* Severe anemia
* Previously diagnosed hypoglycemia episodes
* Regular intake of medication (e.g. Antidepressant/anti-anxiety medication)
* Blood donation within 4 weeks before the study appointment
* Intake of anticoagulant medications
* illegal drug consumption
* smoking or nicotine consumption
* extreme athletes
* vegetarians or vegans or any other dietary restrictions due to allergies or intolerances
* shift workers
18 Years
35 Years
FEMALE
Yes
Sponsors
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German Institute of Human Nutrition
OTHER
Responsible Party
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Prof. Dr. Soyoung Q Park
Prof. Dr.
Principal Investigators
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Soyoung Q Park, Prof. Dr.
Role: PRINCIPAL_INVESTIGATOR
German Institute of Human Nutrition Potsdam-Rehbruecke
Locations
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German Institute of Human Nutrition Potsdam-Rehbruecke
Nuthetal, Brandenburg, Germany
Countries
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Central Contacts
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Facility Contacts
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References
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Haftenberger M, Heuer T, Heidemann C, Kube F, Krems C, Mensink GB. Relative validation of a food frequency questionnaire for national health and nutrition monitoring. Nutr J. 2010 Sep 14;9:36. doi: 10.1186/1475-2891-9-36.
Langenbach BP, Baumgartner T, Cazzoli D, Muri RM, Knoch D. Inhibition of the right dlPFC by theta burst stimulation does not alter sustainable decision-making. Sci Rep. 2019 Sep 25;9(1):13852. doi: 10.1038/s41598-019-50322-w.
Teslovich T, Freidl EK, Kostro K, Weigel J, Davidow JY, Riddle MC, Helion C, Dreyfuss M, Rosenbaum M, Walsh BT, Casey BJ, Mayer L. Probing behavioral responses to food: development of a food-specific go/no-go task. Psychiatry Res. 2014 Sep 30;219(1):166-70. doi: 10.1016/j.psychres.2014.04.053. Epub 2014 May 10.
Schmidt S, Strauss B, Hoger D, Brahler E. [The Adult Attachment Scale (AAS) - psychometric evaluation and normation of the German version]. Psychother Psychosom Med Psychol. 2004 Sep-Oct;54(9-10):375-82. doi: 10.1055/s-2003-815000. German.
Renner B, Sproesser G, Strohbach S, Schupp HT. Why we eat what we eat. The Eating Motivation Survey (TEMS). Appetite. 2012 Aug;59(1):117-28. doi: 10.1016/j.appet.2012.04.004. Epub 2012 Apr 19.
Depa J, Gyngell F, Muller A, Eleraky L, Hilzendegen C, Stroebele-Benschop N. Prevalence of food insecurity among food bank users in Germany and its association with population characteristics. Prev Med Rep. 2018 Jan 28;9:96-101. doi: 10.1016/j.pmedr.2018.01.005. eCollection 2018 Mar.
Meule A, Lutz A, Vogele C, Kubler A. Food cravings discriminate differentially between successful and unsuccessful dieters and non-dieters. Validation of the Food Cravings Questionnaires in German. Appetite. 2012 Feb;58(1):88-97. doi: 10.1016/j.appet.2011.09.010. Epub 2011 Sep 29.
Pook M, Tuschen-Caffier B, Brahler E. Evaluation and comparison of different versions of the Body Shape Questionnaire. Psychiatry Res. 2008 Feb 28;158(1):67-73. doi: 10.1016/j.psychres.2006.08.002. Epub 2007 Nov 26.
Kuhner C, Burger C, Keller F, Hautzinger M. [Reliability and validity of the Revised Beck Depression Inventory (BDI-II). Results from German samples]. Nervenarzt. 2007 Jun;78(6):651-6. doi: 10.1007/s00115-006-2098-7. German.
Eggart M, Todd J, Valdes-Stauber J. Validation of the Multidimensional Assessment of Interoceptive Awareness (MAIA-2) questionnaire in hospitalized patients with major depressive disorder. PLoS One. 2021 Jun 25;16(6):e0253913. doi: 10.1371/journal.pone.0253913. eCollection 2021.
Schneider EE, Schonfelder S, Domke-Wolf M, Wessa M. Measuring stress in clinical and nonclinical subjects using a German adaptation of the Perceived Stress Scale. Int J Clin Health Psychol. 2020 May-Aug;20(2):173-181. doi: 10.1016/j.ijchp.2020.03.004. Epub 2020 May 22.
Meule A, Reichenberger J, Blechert J. Development and preliminary validation of the Salzburg Stress Eating Scale. Appetite. 2018 Jan 1;120:442-448. doi: 10.1016/j.appet.2017.10.003. Epub 2017 Oct 3.
Gueguen MCM, Anllo H, Bonagura D, Kong J, Hafezi S, Palminteri S, Konova AB. Recent Opioid Use Impedes Range Adaptation in Reinforcement Learning in Human Addiction. Biol Psychiatry. 2024 May 15;95(10):974-984. doi: 10.1016/j.biopsych.2023.12.005. Epub 2023 Dec 13.
Liu L, Artigas SO, Ulrich A, Tardu J, Mohr PNC, Wilms B, Koletzko B, Schmid SM, Park SQ. Eating to dare - Nutrition impacts human risky decision and related brain function. Neuroimage. 2021 Jun;233:117951. doi: 10.1016/j.neuroimage.2021.117951. Epub 2021 Mar 12.
Eisenstein SA, Gredysa DM, Antenor-Dorsey JA, Green L, Arbelaez AM, Koller JM, Black KJ, Perlmutter JS, Moerlein SM, Hershey T. Insulin, Central Dopamine D2 Receptors, and Monetary Reward Discounting in Obesity. PLoS One. 2015 Jul 20;10(7):e0133621. doi: 10.1371/journal.pone.0133621. eCollection 2015.
Related Links
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Abler, B. \& Kessler, H. (2011). ERQ. Emotion Regulation Questionnaire \[Verfahrensdokumentation aus PSYNDEX Tests-Nr. 9006192 und Fragebogen\]. In Leibniz-Zentrum für Psychologische Information und Dokumentation (ZPID) (Hrsg.), Elektronisches Testarchiv.
Janke, S., \& Glöckner-Rist, A. (2012). Deutsche Version der Positive and Negative Affect Schedule (PANAS). Zusammenstellung sozialwissenschaftlicher Items und Skalen (ZIS).
Grimm, Jürgen (Hg.) (2009): State-Trait-Anxiety Inventory nach Spielberger. Deutsche Lang- und Kurzversion.- Methodenforum der Universität Wien. MF-Working Paper 2009/02
Van Dyck, Z., Herbert, B. M., Happ, C., Kleveman, G. V., \& Vögele, C. (2019). IES-2. Deutsche Version der Intuitive Eating Scale 2 \[Verfahrensdokumentation und Fragebogen\]. In Leibniz-Institut für Psychologie (ZPID) (Hrsg.), Open Test Archive. Trier: ZPI
Pudel V., Westenhöfer, J. (1989): Fragebogen zum Essverhalten. F-E-V, Hogrefe, Göttingen.
Roth, M.(2003). Kurzform der Familienklimaskalen für Jugendliche. Zusammenstellung sozialwissenschaftlicher Items und Skalen (ZIS).
Other Identifiers
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Buffet
Identifier Type: -
Identifier Source: org_study_id
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