MinorPrimary and study completion dates: Sep 21, 2026 to Apr 20, 2026
MinorTrial completed
Primary completion date changed from estimate of Jun 1, 2027 to Sep 21, 2026
Eligibility criteria expanded, about 31 words
Study description expanded, about 3 words
Minor6 versionsRe-verified since Jul 15, 2026, no change to tracked fieldsv330-v335
NotableEnrollment reduced: 692 → 37 participants
Trial status changed: Recruiting → Active, Not Recruiting
v329
NotablePrimary completion pushed from Jun 1, 2026 to Jun 1, 2027
Study completion pushed from Jul 1, 2026 to Jun 1, 2027
v328
Minor25 versionsRe-verified since Jun 14, 2025, no change to tracked fieldsv303-v327
NotablePrimary completion date: Jun 1, 2025 to Jun 1, 2026
Study completion date: Jul 1, 2025 to Jul 1, 2026
v302
Minor6 versionsRe-verified since Apr 3, 2025, no change to tracked fieldsv296-v301
NotableLead sponsor: National Institute of Nursing Research (NINR) to National Center for Complementary and Integrative Health (NCCIH)v295
Minor3 versionsRe-verified since Mar 19, 2025, no change to tracked fieldsv292-v294
MinorStudy Status, Study Description, Eligibility, Contacts/Locationsv291
MinorRe-verified, no change to tracked fieldsv290
Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
Minor: routine progress and housekeeping, such as sites added or enrollment closed.
Background:
The cause of fatigue is not well understood. It can be felt differently by different people. Some people think there are different types of fatigue, with different causes. Researchers think a therapy to treat one type of fatigue in one condition should be able to treat that type of fatigue in other conditions.
Objective:
To understand the types of fatigue.
Eligibility:
Adults 18 and older who have felt fatigue for more than a month, and non-fatigued adults
Design:
Participants will be screened with a physical exam, their medical history, a vision test, and blood and urine tests.
Participants will begin to track the foods they eat.
This study will involve up to 10 visits. Each visit will last no more than 4 hours.
In Stage 1, participants will have an interview, fill out questionnaires, and play computer games. They will take walking and handgrip tests. They will give blood, urine, and saliva samples. They will wear a wrist monitor at home for 7 days and write down their activities. They will be put into a group: fatigue or non-fatigued control.
In Stage 2, participants will answer questionnaires and give a blood sample. They will have heart tests. They may take exercise and lung function tests that include wearing a nose clip. They may have an optional brain MRI: They may wear an electrode cap on their head during the scan to measure brain activity. They will lie on table that slides into a cylinder. They may perform tasks in the scanner.
After the study, participants might be contacted about other studies.