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Cerebromikrovaskulære effekter av tidsbegrenset spising hos eldre voksne

25. juni 2026 oppdatert av: University of Oklahoma
Den sentrale hypotesen i denne studien er at tettere overholdelse av tidsbegrenset spising (TRE) vil forbedre endotelfunksjon, nevrovaskulære (NVC) responser, noe som resulterer i forbedret kognitiv ytelse, potensielt gjennom aktivering av SIRT1-avhengige vasoprotektive veier.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Denne hypotesen vil bli testet ved å vurdere effekten av TRE (ikke mer enn 10 timers spisevindu hver dag i 6 måneder) hos friske voksne (≥21 år). Gruppen av forsøkspersoner som er registrert i TRE-armen vil bli sammenlignet med kontrollgruppen. Alle deltakerne vil bli randomisert til hver av grenene av studien.

Studietype

Intervensjonell

Registrering (Faktiske)

11

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studer Kontakt Backup

Studiesteder

    • Oklahoma
      • Oklahoma City, Oklahoma, Forente stater, 73117
        • University of Oklahoma Health Sciences Center

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

21 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Ja

Beskrivelse

Inklusjonskriterier:

-Friske voksne ≥21 år

Ekskluderingskriterier:

- Manglende evne til å lese eller skrive på engelsk

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Annen
  • Tildeling: N/A
  • Intervensjonsmodell: Enkeltgruppeoppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Time restricted eating
14 h of fasting daily (10 h of free eating)
14:10 daily fasting regimen

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Neurovascular Coupling Using Functional Near Infrared Spectroscopy (fNIRS)
Tidsramme: Baseline, 6 months
Functional near infrared spectroscopy (fNIRS) will be performed during the cognitive n-back task. fNIRS approach generates data that represent a relative change in oxygenated hemoglobin measured over the cortical brain tissues. fNIRS data is analyzed using a pipeline based on the General Linear Model (GLM) approach created using the Brain AnalyzIR toolbox and implemented in MatLab. At the subject level, regression coefficients (beta values) are extracted to characterize individual neurovascular coupling response in the prefrontal cortex across all n-back blocks. It is expected that more difficult cognitive tasks will lead to increased neurovascular coupling responses in healthy individuals, but no clinically relevant ranges exist for this measure.
Baseline, 6 months

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Neurovascular Coupling Using the Dynamic Retinal Vessel Analysis
Tidsramme: Baseline, 6 months
Flicker light-induced dilation of the retinal vessels (percentage increase over baseline diameter) will be measured in the right or left eye of each study participant using the Dynamic Vessel Analyzer (DVA, IMEDOS Systems, Jena, Germany). The change in retinal vessel diameters is tracked and reported as a %change from baseline, before and after treatment.
Baseline, 6 months
Neurovascular Coupling Using Transcranial Doppler
Tidsramme: Baseline, 6 months
Transcranial Doppler sonography will be used to measure the change in the blood flow velocities during the cognitive n-back task between before and after treatment.
Baseline, 6 months
Microvascular Endothelial Function
Tidsramme: Baseline, 6 months
Changes in microvascular endothelial function will be assessed using laser speckle contrast imaging (LSCI) in the hand using the flow mediated dilation approach. The change in skin perfusion is calculated and reported as a fold change from baseline.
Baseline, 6 months
Macrovascular Endothelial Function
Tidsramme: Baseline, 6 months
Changes in macrovascular endothelial function will be assessed using sonography during flow mediated dilation approach. The change in brachial artery diameter is calculated and reported as a %change from baseline.
Baseline, 6 months
Deep Tissue Oxygen Saturation
Tidsramme: Baseline, 6 months
Transcutaneous deep tissue oxygen saturation will be measured using the inSpectra near infrared device. The data are calculated and reported as a %change from baseline.
Baseline, 6 months
Arterial Stiffness
Tidsramme: Baseline, 6 months
The arterial stiffness will be measured using the pulse wave analysis approach (SphygmoCor, Atcor medical, Itasca IL, or similar). Analysis generated the augmentation index which will be used for comparison before and after treatment.
Baseline, 6 months
ECG
Tidsramme: Baseline, 6 months
ECG will be recorded for heart rate variability analysis. The values of high frequency domain, low frequency domain, their ratio, as well as total power will be calculated and used for comparison before and after treatment.
Baseline, 6 months
Glycocalyx - Perfused Boundary Region
Tidsramme: Baseline, 6 months
Video recordings of the sublingual vasculature will be performed using the high definition video camera GlycoCheck (Microvascular health solutions). Data collected will include perfused boundary region (um), and will be used for comparison before and after treatment.
Baseline, 6 months
Capillary Density
Tidsramme: Baseline, 6 months
Video recordings of the sublingual vasculature will be performed using the high definition video camera GlycoCheck (Microvascular health solutions). Data collected will include capillary density (mm/mm^2), and will be used for comparison before and after treatment.
Baseline, 6 months
Red Blood Cell Velocity
Tidsramme: Baseline, 6 months
Video recordings of the sublingual vasculature will be performed using the high definition video camera GlycoCheck (Microvascular health solutions). Data collected will include red blood cell velocity (um/sec), and will be used for comparison before and after treatment.
Baseline, 6 months
Inhibitory Control and Attention
Tidsramme: Baseline, 6 months
Flanker Inhibitory Control and Attention Test was used to assess inhibitory control and attention. The participant is asked to focus on a particular stimulus while inhibiting attention to the stimuli flanking it. Scores are fully adjusted to nationally representative normative sample of NIH toolbox test takers, accounting for age, sex, race, and education (mean = 50; SD = 10). Higher scores represent better outcomes.
Baseline, 6 months
Episodic Memory
Tidsramme: Baseline, 6 months
Picture Sequence Memory Test was used to assess episodic memory. Participants are shown a number of activities, and then asked to reproduce the sequence of pictures as it was presented to them. Scores are fully adjusted to nationally representative normative sample of NIH toolbox test takers, accounting for age, sex, race, and education (mean = 50; SD = 10). Higher scores represent better outcomes.
Baseline, 6 months
Working Memory
Tidsramme: Baseline, 6 months
List Sorting Working Memory Test was used to assess working memory. The participant is asked to recall and sequence different stimuli that are presented visually and via audio. Scores are fully adjusted to nationally representative normative sample of NIH toolbox test takers, accounting for age, sex, race, and education (mean = 50; SD = 10). Higher scores represent better outcomes.
Baseline, 6 months
Language
Tidsramme: Baseline, 6 months
Picture Vocabulary Test measures receptive vocabulary administered in a computer-adaptive test (CAT) format. Respondents select the picture that most closely matches the meaning of the word. Scores are fully adjusted to nationally representative normative sample of NIH toolbox test takers, accounting for age, sex, race, and education (mean = 50; SD = 10). Higher scores represent better outcomes.
Baseline, 6 months
Executive Function
Tidsramme: Baseline, 6 months
Dimensional Change Card Sort Test was used to assess cognitive flexibility and attention. The participant is asked to match a series of picture pairs to a target picture. Scores are fully adjusted to nationally representative normative sample of NIH toolbox test takers, accounting for age, sex, race, and education (mean = 50; SD = 10). Higher scores represent better outcomes.
Baseline, 6 months
Processing Speed
Tidsramme: Baseline, 6 months
Pattern Comparison Processing Speed Test was used to assess processing speed. Participants are asked to quickly determine whether two stimuli are the same or not the same. Scores are fully adjusted to nationally representative normative sample of NIH toolbox test takers, accounting for age, sex, race, and education (mean = 50; SD = 10). Higher scores represent better outcomes.
Baseline, 6 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Etterforskere

  • Hovedetterforsker: Stefano Tarantini, PhD, University of Oklahoma

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

17. november 2022

Primær fullføring (Faktiske)

10. januar 2024

Studiet fullført (Faktiske)

10. januar 2024

Datoer for studieregistrering

Først innsendt

22. juli 2022

Først innsendt som oppfylte QC-kriteriene

2. august 2022

Først lagt ut (Faktiske)

4. august 2022

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

17. august 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

25. juni 2026

Sist bekreftet

1. juni 2026

Mer informasjon

Begreper knyttet til denne studien

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 14856

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .