Zerebromikrovaskuläre Auswirkungen von zeitlich begrenztem Essen bei älteren Erwachsenen
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Phase
Phase
- Unzutreffend
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Stefano Tarantini, PhD
- Telefonnummer: 47818 (405)-271-8000
- E-Mail: stefano-tarantini@ouhsc.edu
Studieren Sie die Kontaktsicherung
- Name: Andriy Yabluchanskiy, MD, PhD
- Telefonnummer: 47097 405-271-8000
- E-Mail: andriy-yabluchanskiy@ouhsc.edu
Studienorte
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Oklahoma
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Oklahoma City, Oklahoma, Vereinigte Staaten, 73117
- University of Oklahoma Health Sciences Center
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Beschreibung
Einschlusskriterien:
-Gesunde Erwachsene ≥21 Jahre
Ausschlusskriterien:
-Unfähigkeit, Englisch zu lesen oder zu schreiben
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Sonstiges
- Zuteilung: N / A
- Interventionsmodell: Einzelgruppenzuweisung
- Maskierung: Keine (Offenes Etikett)
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
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Experimental: 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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Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Neurovascular Coupling Using Functional Near Infrared Spectroscopy (fNIRS)
Zeitfenster: Baseline, 6 months
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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
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Neurovascular Coupling Using the Dynamic Retinal Vessel Analysis
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Neurovascular Coupling Using Transcranial Doppler
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Microvascular Endothelial Function
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Macrovascular Endothelial Function
Zeitfenster: Baseline, 6 months
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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
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Deep Tissue Oxygen Saturation
Zeitfenster: Baseline, 6 months
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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
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Arterial Stiffness
Zeitfenster: 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.
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Baseline, 6 months
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ECG
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Glycocalyx - Perfused Boundary Region
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Capillary Density
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Red Blood Cell Velocity
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Inhibitory Control and Attention
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Episodic Memory
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Working Memory
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Language
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Executive Function
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Processing Speed
Zeitfenster: Baseline, 6 months
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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.
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Baseline, 6 months
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Hauptermittler: Stefano Tarantini, PhD, University of Oklahoma
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 14856
Plan für individuelle Teilnehmerdaten (IPD)
Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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