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

Not Applicable

• Conditions: Healthy adults

• Registration Number: JPRN-UMIN000037938
• Lead Sponsor: Waseda University

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2019-09-05
• Study Completion: 2021-03-31
• Last Update Posted: 17 October 2023

Recruitment & Eligibility

• Status: Complete: follow-up complete
• Sex: All
• Target Recruitment: 105

Inclusion Criteria

Not provided

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)

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The following measures would be conducted before and after 2 weeks of intervention. 1) clock gene and social jet lag.

Secondary Outcome Measures

Name	Time	Method
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