Cerebromikrovaskulära effekter av tidsbegränsat ätande hos äldre vuxna
Studieöversikt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljerad beskrivning
Studietyp
Studietyp
Inskrivning (Faktisk)
Inskrivning
Fas
Fas
- Inte tillämpbar
Kontakter och platser
Studiekontakt
Studiekontakt
- Namn: Stefano Tarantini, PhD
- Telefonnummer: 47818 (405)-271-8000
- E-post: stefano-tarantini@ouhsc.edu
Studera Kontakt Backup
- Namn: Andriy Yabluchanskiy, MD, PhD
- Telefonnummer: 47097 405-271-8000
- E-post: andriy-yabluchanskiy@ouhsc.edu
Studieorter
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-
Oklahoma
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Oklahoma City, Oklahoma, Förenta staterna, 73117
- University of Oklahoma Health Sciences Center
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Deltagandekriterier
Urvalskriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Beskrivning
Inklusionskriterier:
- Friska vuxna ≥21 år
Exklusions kriterier:
- Oförmåga att läsa eller skriva på engelska
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Övrig
- Tilldelning: N/A
- Interventionsmodell: Enskild gruppuppgift
- Maskning: Ingen (Open Label)
Antal vapen
Vapen och interventioner
Deltagargrupp / ArmDeltagargrupp / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Experimentell: Time restricted eating
14 h of fasting daily (10 h of free eating)
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14:10 daily fasting regimen
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Vad mäter studien?
Primära resultatmått
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Neurovascular Coupling Using Functional Near Infrared Spectroscopy (fNIRS)
Tidsram: 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.
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Baseline, 6 months
|
Sekundära resultatmått
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Neurovascular Coupling Using the Dynamic Retinal Vessel Analysis
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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.
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Baseline, 6 months
|
|
Deep Tissue Oxygen Saturation
Tidsram: 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.
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Baseline, 6 months
|
|
Arterial Stiffness
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
|
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Processing Speed
Tidsram: 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
|
Samarbetspartners och utredare
Sponsor
Sponsor
Utredare
Utredare
- Huvudutredare: Stefano Tarantini, PhD, University of Oklahoma
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Studiestart
Primärt slutförande (Faktisk)
Primärt slutförande
Avslutad studie (Faktisk)
Avslutad studie
Studieregistreringsdatum
Först inskickad
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Första postat
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste uppdatering publicerad
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
Andra studie-ID-nummer
- 14856
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