NCT06350422

Brief Summary

This clinical trial investigates the neuroplasticity and cognitive status changes of the human brain in microgravity. To explore the relationship between cognitive status changes and brain functional activities, gray matter and white matter changes under microgravity exposure, screen and identify representative image markers, so as to provide decision-making information for the cognitive status changes of relevant personnel under microgravity environment.

Trial Health

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Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
26

participants targeted

Target at below P25 for all trials

Timeline
Completed

Started Jan 2022

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2022

Completed
2.2 years until next milestone

First Submitted

Initial submission to the registry

April 1, 2024

Completed
4 days until next milestone

First Posted

Study publicly available on registry

April 5, 2024

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 31, 2024

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2024

Completed
Last Updated

April 5, 2024

Status Verified

April 1, 2024

Enrollment Period

2.8 years

First QC Date

April 1, 2024

Last Update Submit

April 1, 2024

Conditions

Keywords

MicrogravityNeuroplasticityMRIRepeatable Battery for the Assessment of Neuropsychological Status

Outcome Measures

Primary Outcomes (6)

  • Local brain functional activity

    Based on resting-state functional MRI images, the changes of local brain functional activity before and after the Head-Down tilt Bed Rest test were compared.

    60 days after the Head-Down tilt Bed Rest test

  • Brain functional connectivity

    Based on resting-state functional MRI images, the changes of brain functional connectivity before and after the Head-Down tilt Bed Rest test were compared.

    60 days after the Head-Down tilt Bed Rest test

  • Brain structure - Morphology

    Based on 3D-T1WI, the changes of brain structure before and after the Head-Down tilt Bed Rest test were compared.

    60 days after the Head-Down tilt Bed Rest test

  • Brain fiber bundle and brain Diffusion index

    Based on diffusion tensor imaging, the changes of brain fiber bundle and brain diffusion index before and after the Head-Down tilt Bed Rest test were compared.

    60 days after the Head-Down tilt Bed Rest test

  • Brain blood flow

    Based on arterial spin labeling, the changes of brain blood flow before and after the Head-Down tilt Bed Rest test were compared.

    60 days after the Head-Down tilt Bed Rest test

  • Imaging indexes and clinical scale scores

    Based on the changes of relevant imaging indexes and the changes of relevant clinical scale scores, explore the correlation between the changes of relevant imaging indexes and relevant clinical scales scores.

    60 days after the Head-Down tilt Bed Rest test

Interventions

All of the volunteers underwent 60 days of the Head-Down tilt Bed Rest test.

Eligibility Criteria

Age18 Years - 60 Years
Sexmale
Healthy VolunteersYes
Age GroupsAdult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Volunteers who underwent 60 days of the Head-Down tilt Bed Rest test.

You may qualify if:

  • Male aged 18-60 years
  • No mental or other neurological disorders, no history of drug or alcohol abuse
  • Generally in good condition, no clear major physical diseases, no hearing disorders
  • No metal foreign bodies in the body, no contraindications to MRI scanning
  • No claustrophobia
  • Agree to participate in the clinical study and sign the informed consent

You may not qualify if:

  • There are electronic implants or metal foreign bodies, such as cardiac pacemakers
  • People with aneurysm surgery and intracranial aneurysm clip
  • People who have had heart surgery and used artificial heart valves
  • Having family planning
  • Uncontrolled epilepsy or mental illness, can't cooperate with MRI examination
  • Severe claustrophobia, can't cooperate with magnetic resonance examination
  • Other circumstances that the clinical trial personnel consider inappropriate to participate in the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Chinese PLA General Hospital

Beijing, China

Location

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director and Clinical Professor

Study Record Dates

First Submitted

April 1, 2024

First Posted

April 5, 2024

Study Start

January 1, 2022

Primary Completion

October 31, 2024

Study Completion

December 31, 2024

Last Updated

April 5, 2024

Record last verified: 2024-04

Locations