Examination of the impact of EF on diurnal cognitive performance in healthy adult employees with short sleep time in their daily life: A randomized, double-blind, placebo-controlled, cross-over study

Examination of the impact of EF on diurnal cognitive performance in healthy adult employees with short sleep time in their daily life: A randomized, double-blind, placebo-controlled, cross-over study - Examination of the impact of EF on diurnal cognitive performance in healthy adult employees with short sleep time in their daily life: A randomized, double-blind, placebo-controlled, cross-over study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000034150

Enrollment

Registered

2019-12-31

Start date

2018-09-15

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

None

Interventions

Intake of test food for a week, then intake of placebo for a week after 3-week wash out period. Intake of placebo for a week, then intake of test food for a week after 3-week wash out period.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy adult employees with average sleep time between 5.5h and 6.5h per day within a week. Subjects who recognize daytime brain fatigue or who feel their brains do not work well because of insufficient sleep.

Exclusion criteria

Exclusion criteria: Subjects who are under treatment of insomnia, sleep disorder, sleep apnea syndrome, chronic fatigue syndrome, menoxenia and menopausal syndrome. Subjects who have a severe past medical history or patients who are suffering from sever disorder. Subjects who are considerably irregular daily rhythm, shift wokers and graveyard shift workers.

Design outcomes

Primary

Measure	Time frame
Indexes of subjective symptoms such as fatigue and sleepiness	—

Secondary

Measure	Time frame
Indexes of cognitive function Index of work productivity Inflammatory/oxidation indexes	—

Countries

Japan

Contacts

Public ContactMasao Matsuoka

HUMA R&D CORP Clinical Development Division

matsuoka@huma-rd.co.jp03-3431-1260

Outcome results

None listed

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