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Analysis of Blood Glucose Variation Patterns in Healthy Individuals under Free-Living Conditions

An Observational Study on Blood Glucose Variation Patterns in Healthy Individuals under Free-Living Conditions - Free-Living Glucose Variability Study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000060090
Enrollment
100
Registered
2025-12-15
Start date
2025-12-08
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None (Healthy Individuals)

Interventions

None listed

Sponsors

Nagasaki University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Healthy volunteers aged 18 years or older who respond to recruitment advertisements, are able to undergo blood sampling, questionnaires, isCGM placement, and body composition analysis, and who provide written informed consent after adequate explanation.

Exclusion criteria

Exclusion criteria: Individuals with diagnosed diabetes or impaired glucose tolerance, those receiving oral steroid therapy, those with significant internal medical disorders, those who are pregnant or breastfeeding, and those deemed inappropriate by the investigators.

Design outcomes

Primary

MeasureTime frame
To evaluate the percentage of time spent in each CGM-derived metric: Time in Range (TIR), Time in Tight Range (TITR), Time Above Range (TAR), and Time Below Range (TBR) in individuals with normal glucose tolerance, and to determine their reference values and distribution.

Secondary

MeasureTime frame
To calculate CGM metrics including TBR, TIR, TAR, MARD, GMI, SD, %CV, and MAGE. If necessary, participants will be classified into normal glucose tolerance, impaired glucose tolerance, and diabetes groups based on blood test results, and the percentage of time spent in TIR, TITR, TAR, and TBR will be calculated and compared among these groups.

Countries

Japan

Contacts

Public ContactHIDEYUKI TSUCHIYAMA

Nagasaki university hospital Endocrinology and Metabolism

tsuchiyama-h@nagasaki-u.ac.jp0958197262

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026