Effects of long-term amino acid intake on sleep in the elderly and healthy adults

Effects of long-term amino acid intake on sleep in the elderly and healthy adults - Effect of morning amino acid intake on sleep

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000045643

Enrollment

Registered

2023-03-31

Start date

2021-11-05

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, elderly

Interventions

Take glycine for 6 weeks. 0.05 g/kg for the first 3 weeks and 0.1 g/kg for the following 3 weeks. Take alanine for 6 weeks. 0.05 g/kg for the first 3 weeks and 0.1 g/kg for the following 3 weeks.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Ability to consume amino acid powders.

Exclusion criteria

Exclusion criteria: People who cannot take the amino acid powder. In addition, people who cannot obtain permission to participate in the study from their doctor, if they have one.

Design outcomes

Primary

Measure	Time frame
The primary endpoint will be a sleep questionnaire. (3 and 6 weeks after intake)	—

Countries

Japan

Contacts

Public ContactHisami Okumura

Tokushima university Department of Clinical Nutrition and Food Management

okumurah@tokushima-u.ac.jp088-633-7093

Outcome results

None listed

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