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Clinical Trial Summary

The aim of the study is to determine whether a night-time tea can improve subjective sleep quality in healthy sleepers and self-reported poor sleepers, compared to a control drink.


Clinical Trial Description

The study will adopt a randomised, double-blind, placebo controlled, crossover design. Sixty-eight healthy adults aged 18+ (34 good sleepers and 34 poor sleepers) will be recruited from the general population. Good sleepers will be recruited if they have a stable sleep-wake schedule (i.e. bed/wake time within the range of 22.00 - 09.00 and with at least 6.5 hours of sleep duration reported per night). Poor sleepers will be recruited if they report subjective sleep difficulties (i.e. poor sleep quality or unrefreshing sleep) and if they display a Pittsburgh Sleep Quality Index total score of >5. Participants will consume both an active tea, and a control tea in a counterbalanced order for 7 days (separated by a 7-day washout period). Participants will complete questionnaires assessing mood, quality of life and sleep and provide blood samples to assess immunological markers. Sleep monitoring will also be conducted using actigraphy sleep monitoring and sleep diaries. Assessments will be made at baseline and following 7 days supplementation. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05478980
Study type Interventional
Source Northumbria University
Contact
Status Completed
Phase N/A
Start date November 3, 2021
Completion date August 17, 2022

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