Unge voksnes spisevaner (YAEH)
Indflydelse af ultraforarbejdede fødevarer på belønningsbehandling og energiindtag
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Brenda M Davy, PhD, RDN
- Telefonnummer: 540-231-6784
- E-mail: davy@vt.edu
Undersøgelse Kontakt Backup
- Navn: Alexandra G DiFeliceantonio, PhD
- Telefonnummer: 540-526-2285
- E-mail: dife@vt.edu
Studiesteder
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Virginia
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Blacksburg, Virginia, Forenede Stater, 24061
- Virginia Polytechnic Institute and State University
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Roanoke, Virginia, Forenede Stater, 24016
- Fralin Biomedical Research Institute at VTC
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Beskrivelse
Inklusionskriterier:
- Alder 18-25 år
- Vægtstabil (+5 lbs) i de foregående 6 måneder
- Ingen planer om at tage på/tabe sig eller ændre fysisk aktivitetsniveau
- Villig til at hente mad dagligt og indtage mad leveret i to 14-dages perioder
- Mundtligt og skriftligt informeret samtykke
- Uhæmmet spiser (TFEQ kognitiv tilbageholdenhed score <11)
- Ingen rapporteret historie om spiseforstyrrelser
- Sædvanligt UPF-indtag +/-10% af amerikansk teenagers gennemsnit på 68% total energi
- Stillesiddende til rekreativt aktiv
- ADHD-medicin, hvis samme medicin >3 måneder på studietidspunktet
Ekskluderingskriterier:
- BMI >30 kg/m2
- Endokrine lidelser eller andre større kroniske sygdomme (f.eks. type 2-diabetes, hypothyroidisme, hypertension)
- Gravid eller planlægger at blive gravid
- Fødevareallergier eller aversioner
- Klaustrofobi
- Anamnese med hovedskade med tab af bevidsthed i mere end 10 minutter
- Kontraindikationer til MR: personer med pacemaker, aneurismeklemmer, neurostimulatorer, cochleaimplantater, metal i øjnene, stålarbejder eller andre implantater.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Enkelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: High Ultra Processed Food Diæt
Deltagerne vil indtage en diæt indeholdende 81 % total energi fra UPF i 2 uger.
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Deltagerne vil blive stillet til rådighed og indtage en diæt, der lægger vægt på UPF (81 % energi).
Diæter vil være eukaloriske (50 % kulhydrat, 35 % fedt, 15 % protein) matchet til diætopløselige og uopløselige fibre, tilsat sukker, mono- og flerumættet fedt, mættet fedt, antioxidante næringsstoffer, natrium og den overordnede kostkvalitet i 2 uger .
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Eksperimentel: Ingen ultraforarbejdet maddiæt
Deltagerne vil indtage en diæt indeholdende 0% total energi fra UPF i 2 uger.
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Deltagerne vil blive stillet til rådighed og indtage en diæt, der ikke indeholder UPF (0 % energi).
Diæter vil være eukaloriske (50 % kulhydrat, 35 % fedt, 15 % protein) matchet til diætopløselige og uopløselige fibre, tilsat sukker, mono- og flerumættet fedt, mættet fedt, antioxidante næringsstoffer, natrium og den overordnede kostkvalitet i 2 uger .
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Ændring i hjerneaktivitet fra udgangspunkt til 2 uger efter højt UPF-indhold eller 2 uger uden UPF-kost
Tidsramme: 4 målinger (før/efter 2 ugers UPF-kost, før/efter 2 ugers ikke-UPF-kost)
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Hjerneresponsen på milkshake blev målt ved hjælp af funktionel magnetisk resonansbilleddannelse (fMRI).
På første niveau blev en kontrast af milkshake > smagsløs opbygget.
De mål, der præsenteres her, er beta-værdierne af milkshake>smagsløs-kontrasten udtrukket fra en orbital frontal cortex a priori interesseområde.
De præ-interventions beta-værdier blev trukket fra de post-interventions værdier.
Udtrukne beta-værdier er per definition arbitrære enheder og er standardmålingen for fMRI.
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4 målinger (før/efter 2 ugers UPF-kost, før/efter 2 ugers ikke-UPF-kost)
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Energy Intake (Total Kcals Consumed) After 2 Weeks High UPF or 2 Weeks no UPF Diet
Tidsramme: 2 measurements total following the 2-week UPF diet (day 15) and following the 2-week no UPF diet (day 15)
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Participants will arrive at the laboratory in the fasted state for an ad libitum breakfast buffet meal.
The buffet meal will contain a variety of food items that vary in macronutrient content and in their degree of processing (UPF, no UPF).
The meal will consist of typical breakfast items in excess of what would normally be consumed.
Participants will self-select foods over a 30-minute period.
Food items will be weighed (±0.1 grams) prior to and after the completion of the meal to determine the amount consumed (g, kcal), calculated using NDSR nutritional analysis software.
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2 measurements total following the 2-week UPF diet (day 15) and following the 2-week no UPF diet (day 15)
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Eating Rate (kcal Per Minute) After 2 Weeks High UPF or 2 Weeks no UPF Diet
Tidsramme: 2 measurements total following the 2-week UPF diet (day 15) and following the 2-week no UPF diet (day 15)
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Participants will arrive at the laboratory in the fasted state for an ad libitum breakfast buffet meal.
The buffet meal will contain a variety of food items that vary in macronutrient content and in their degree of processing (UPF, no UPF).
The meal will consist of typical breakfast items in excess of what would normally be consumed.
Participants will self-select foods over a 30-minute period.
Meal eating rate (g/min, kcal/min) will be determined using meal start and stop times.
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2 measurements total following the 2-week UPF diet (day 15) and following the 2-week no UPF diet (day 15)
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Number of UPF Food Items Selected After 2 Weeks High UPF or 2 Weeks no UPF Diet
Tidsramme: 2 measurement (once following the 2-week UPF diet, once following the 2-week no UPF diet)
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At the ad libitum buffet meal following the 2-week UPF diet and 2-week no UPF diet, food selection will be determined by the number of items consumed from UPF
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2 measurement (once following the 2-week UPF diet, once following the 2-week no UPF diet)
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Change in Grams of UPF vs no UPF Food Items Selected After 2 Weeks High UPF or 2 Weeks no UPF Diet in the ad Libitum Buffet Meal Task
Tidsramme: 2 measurements (once following the 2-week UPF diet, once following the 2-week no UPF diet)
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At the ad libitum buffet meal following the 2-week UPF diet and 2-week no UPF diet, food selection will be determined by the number of grams consumed from UPF minus no UPF food items.
For both diet interventions, all buffet food items are weighed before and after the task to calculated change in grams of UPF minus no UPF food items selected.
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2 measurements (once following the 2-week UPF diet, once following the 2-week no UPF diet)
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Change in Amount of Energy (Kcals) Selected From UPF vs no UPF Food Items After 2 Weeks High UPF or 2 Weeks no UPF Diet in the ad Libitum Buffet Meal Task
Tidsramme: 2 measurements (once following the 2-week UPF diet, once following the 2-week no UPF diet)
|
At the ad libitum buffet meal following the 2-week UPF diet and 2-week no UPF diet, food selection will be determined by the number of amount of energy (kcals) consumed from UPF minus no UPF.
For both diet interventions, all buffet food items are weighed before and after the task to calculated change in energy (kcals) of UPF minus no UPF food items selected.
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2 measurements (once following the 2-week UPF diet, once following the 2-week no UPF diet)
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Andre resultatmål
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in Executive Function From Baseline to 2-weeks Post High UPF or 2 Weeks no UPF Diet
Tidsramme: 2 measurements (post minus pre 2-week UPF diet, post minus pre 2-week no UPF diet)
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Participants will undergo computerized tests of executive function, such as working memory, cognitive flexibility, and inhibitory control.
These tasks have been widely used with participants across the lifespan and contain simple graphics.
The task used was Corsi backward block-tapping test measuring working memory.
The score (1-9), or level for each participant was measured by the longest sequence length a participant can successfully reproduce, with higher level suggesting stronger visuospatial working memory capacity.
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2 measurements (post minus pre 2-week UPF diet, post minus pre 2-week no UPF diet)
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Energy Intake (kcal) in the Absence of Hunger Following the 2-weeks Post High UPF or 2 Weeks no UPF Diet
Tidsramme: 2 measurements (in person following the 2-week UPF diet, in person following the 2-week no UPF diet)
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Following the ad libitum buffet meal, participants will move to a separate room where an ample amount of 6 pre-weighed snack items (3 UPF, 3 no UPF) and magazines are available.
Using an approach consistent with previous research studying this outcome, participants will be instructed to take 2 bites of each snack item and rate its palatability on the LHS, and to eat the remainder of the snacks or look at the magazines while they wait for the next part of the study.
Participants will be left to consume the snacks or relax for 15 minutes.
Participants will also be given a box of snacks to assess eating in the absence of hunger outside the laboratory environment.
Snack boxes will be returned to study staff the next morning.
Staff will document the amount and type of snacks consumed.
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2 measurements (in person following the 2-week UPF diet, in person following the 2-week no UPF diet)
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Change in Hunger Ratings From 2 Weeks High UPF or 2 Weeks no UPF Diet
Tidsramme: 2 measurements (once following the 2-week UPF diet, once following the 2-week no UPF diet)
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To assess sensations of hunger a Visual Analog Scale bounded by "Not hungry at all" numerically represented as 0 (Minimum) and "Very hungry" numerically represented as 100 (Maximum) will be used.
For the Visual Analog Scale, higher scores indicate higher hunger and lower scores indicate lower hunger.
Visual Analog Scales (VAS) will be completed immediately prior to buffet meal and immediately following buffet meal completion, following the 2-week UPF diet and 2-week no UPF diet.
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2 measurements (once following the 2-week UPF diet, once following the 2-week no UPF diet)
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Change in Sensitivity to Delayed Reward From Baseline to Following 2 Weeks High UPF or 2 Weeks no UPF Diet
Tidsramme: 2 measurements (post minus pre 2-week UPF diet, post minus pre 2-week no UPF diet)
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To assess sensitivity to delayed reward by assessing preference for different amounts of money varying over different amounts of time.
This will be associated with a k value (discount rate), the lower the k value, the less discounting.
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2 measurements (post minus pre 2-week UPF diet, post minus pre 2-week no UPF diet)
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Alexandra G DiFeliceantonio, PhD, Virginia Polytechnic Institute and State University
- Ledende efterforsker: Brenda M Davy, PhD, RDN, Virginia Polytechnic Institute and State University
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 22-253
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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