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The effect of intake of caffeine and amino acid in the morning on biological rhythm and social jet lag.

The effect of intake of caffeine and amino acid in the morning on biological rhythm and social jet lag. - The effect of intake of caffeine and amino acid in the morning on biological rhythm and social jet lag.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000037938
Enrollment
105
Registered
2019-09-05
Start date
2019-09-17
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

Healthy adults

Interventions

Intake of test food A for 1 week. Intake of test food B for 1 week. Intake of test food C for 1 week. Intake of test food D for 1 week. Intake of test food E for 1 week. Intake of test food F for 1 we

Sponsors

Waseda University
Lead Sponsor
NOEVIR Co.,Ltd.
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1)Gives informed consent, agrees to be randomly assigned

Exclusion criteria

Exclusion criteria: 1) Physically active lifestyle 2) Intake of lipid and/or glucose lowering medication 3) Intake of Antipsychotics, Hypnotic, Steroids 4) Xylocaine allergy 5) Judged ineligible by a medical doctor. 6) Obesity (BMI>35kg/m2) and sleep apnea syndrome 7) High blood pressure (SBP: above 140mmHg, and DBP: above 90mmHg)

Design outcomes

Primary

MeasureTime frame
The following measures would be conducted before and after 2 weeks of intervention. 1) clock gene and social jet lag.—

Secondary

MeasureTime frame
1) 24-hour glucose level 2) physical activity(accelerometer) 3) sleep evaluation (Sleep measurement device) 4) morningness-eveningness type, Pittsburgh sleep quality index, food frequency questionnaire—

Countries

Japan

Contacts

Public ContactHyeon-Ki Kim

Waseda University School of Advanced Science and Engineering

hk.kim@aoni.waseda.jp03-5369-7318

Outcome results

None listed

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