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Effects of Continuous Tea Consumption on Sleep

Effects of Continuous Tea Consumption on Sleep - Effect of Tea Leaves on Sleep

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000052337
Enrollment
50
Registered
2023-09-28
Start date
2023-10-01
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

3weeks Control food Three times a day 3weeks Test food Three times a day

Sponsors

Otsuma Women's University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Healthy adults

Exclusion criteria

Exclusion criteria: 1.Have a history of, or are currently suffering from, respiratory, gastrointestinal, hepatobiliary, hematologic, renal, endocrine, or cardiovascular disease. 2.Have a history of serious trauma or surgery within 12 weeks prior to the start of the study. 3.Subjects with a history or suspected history of allergic disease requiring any kind of treatment for food or drugs. 4.Subjects who are judged by the project leader to be regular users of blueberry leaf tea at the time of the subject's explanation. 5.Subjects who are judged by the person in charge to be taking actions to improve sleep or fatigue stress at the time of the subject's explanation. 6.Subjects who wake up in the middle of the night such as urinating during the night 7.Subjects who have been diagnosed with sleep apnea syndrome and chronic fatigue syndrome 8.Subjects who are allergic to the test food 9.Subjects who have participated in other clinical trials (including clinical trials) within 4 weeks prior to the start of intake. 10.Other subjects who are judged to be unsuitable as subjects by the investigator.

Design outcomes

Primary

MeasureTime frame
Sleep efficiency

Secondary

MeasureTime frame
Sleep onset latency, number of awakenings in the middle of the day, and 5 factors of the OSA-MA version

Countries

Japan

Contacts

Public ContactKentaro Shoji

Otsuma Women's University Department of Food Science, Faculty of Home Economics

shoji@otsuma.ac.jp0352756086

Outcome results

None listed

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