Study on the effect of supplements on concentration

Study on the effect of supplements on concentration - Study on the effect of supplements on concentration

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000049784

Enrollment

Registered

2022-12-15

Start date

2022-12-23

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 Japanese subjects

Interventions

Duration:28 days Intake of test food Duration:28 days Intake of placebo

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Healthy students aged 18 and over. 2) Individuals giving the written informed consent.

Exclusion criteria

Exclusion criteria: 1)Subjects who have food allergy to soybeans 2)Subjects who are taking medicines and health foods related to fatigue, stress and sleep. 3)Subjects who cannot stop drinking alcohol on the day before the experimental day and on the experimental day, drinking excessive amounts of alcohol during the experimental days and consuming caffeine or energy drinks on the experimental day.

Design outcomes

Primary

Measure	Time frame
The Trail Making Test	—

Secondary

Measure	Time frame
The Uchida-Kraepelin test Autonomic nerve function Subjective fatigue OSA sleep inventory MA version Game results	—

Countries

Japan

Contacts

Public ContactSaito Yoshiko

Behavior Assessment System Laboratory Director Researcher

saitou@baslab.or.jp090-4353-9416

Outcome results

None listed

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