Efectos cerebromicrovasculares de la alimentación restringida en el tiempo en adultos mayores
Descripción general del estudio
Estado
Estado
Condiciones
Condiciones
Intervención / Tratamiento
Intervención / Tratamiento
Descripción detallada
Tipo de estudio
Tipo de estudio
Inscripción (Actual)
Inscripción
Fase
Fase
- No aplica
Contactos y Ubicaciones
Estudio Contacto
Estudio Contacto
- Nombre: Stefano Tarantini, PhD
- Número de teléfono: 47818 (405)-271-8000
- Correo electrónico: stefano-tarantini@ouhsc.edu
Copia de seguridad de contactos de estudio
- Nombre: Andriy Yabluchanskiy, MD, PhD
- Número de teléfono: 47097 405-271-8000
- Correo electrónico: andriy-yabluchanskiy@ouhsc.edu
Ubicaciones de estudio
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Oklahoma
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Oklahoma City, Oklahoma, Estados Unidos, 73117
- University of Oklahoma Health Sciences Center
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Criterios de participación
Criterio de elegibilidad
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Descripción
Criterios de inclusión:
-Adultos sanos ≥21 años de edad
Criterio de exclusión:
- Incapacidad para leer o escribir en inglés.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Otro
- Asignación: N / A
- Modelo Intervencionista: Asignación de un solo grupo
- Enmascaramiento: Ninguno (etiqueta abierta)
Número de brazos
Armas e Intervenciones
Grupo de participantes/brazoGrupo de participantes/brazo |
Intervención / TratamientoIntervención / Tratamiento |
|---|---|
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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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¿Qué mide el estudio?
Medidas de resultado primarias
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Neurovascular Coupling Using Functional Near Infrared Spectroscopy (fNIRS)
Periodo de tiempo: 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
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Medidas de resultado secundarias
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Neurovascular Coupling Using the Dynamic Retinal Vessel Analysis
Periodo de tiempo: 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.
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Baseline, 6 months
|
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Neurovascular Coupling Using Transcranial Doppler
Periodo de tiempo: 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.
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Baseline, 6 months
|
|
Microvascular Endothelial Function
Periodo de tiempo: 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.
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Baseline, 6 months
|
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Macrovascular Endothelial Function
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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.
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Baseline, 6 months
|
|
Glycocalyx - Perfused Boundary Region
Periodo de tiempo: 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.
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Baseline, 6 months
|
|
Capillary Density
Periodo de tiempo: 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.
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Baseline, 6 months
|
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Red Blood Cell Velocity
Periodo de tiempo: 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.
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Baseline, 6 months
|
|
Inhibitory Control and Attention
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
|
Colaboradores e Investigadores
Patrocinador
Patrocinador
Investigadores
Investigadores
- Investigador principal: Stefano Tarantini, PhD, University of Oklahoma
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Inicio del estudio
Finalización primaria (Actual)
Finalización primaria
Finalización del estudio (Actual)
Finalización del estudio
Fechas de registro del estudio
Enviado por primera vez
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Publicado por primera vez
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización publicada
Última actualización enviada que cumplió con los criterios de control de calidad
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
Otros números de identificación del estudio
- 14856
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
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