The effect of hydrogen-rich jelly on sleep quality in healthy subjects, part 2

The effect of hydrogen-rich jelly on sleep quality in healthy subjects: A randomized, double-blind, placebo-controlled, parallel study, part 2 - The effect of hydrogen-rich jelly on sleep quality in healthy subjects: A randomized, double-blind, placebo-controlled, parallel study, part 2

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000055516

Enrollment

Registered

2024-09-17

Start date

2024-09-17

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

Interventions

Subjects take 10 g of jelly containing 30 ppm of hydrogen thrice daily for 4 weeks. Subjects take 10 g of jelly containing 30 ppm of air thrice daily for 4 weeks.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Healthy males and females who constantly feel unsatisfaction with sleep quality 2) The average standardized score of five distinct factors in OSA-MA is under 45

Exclusion criteria

Exclusion criteria: 1) Under chronic diseases 2) Taking medicines or dietary supplements that may affect the trial 3) Participation in any clinical trial within three months of the commencement of the trial 4) In pregnancy or nursing a child 5) Judged as ineligible by the investigators

Design outcomes

Primary

Measure	Time frame
4-week changes in electroencephalographic sleep profiles	—

Secondary

Measure	Time frame
4-week changes in the following: Urinary 6-sulfatoxymelatonin, OSA-MA, Visual Analogue Scale (Sleep quality, Mental stress, Physical fatigue), Pittsburg Sleep Quality Index (PSQI), State-Trait Anxiety Inventory (STAI), Stool frequency	—

Countries

Japan

Contacts

Public ContactFumiko Higashikawa

Hiroshima University Hospital Medical Center for Translational and Clinical Research

healthy-life@hiroshima-u.ac.jp082-257-1909

Outcome results

None listed

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