The effects of imidazole dipeptide supplementation on sleep and performance

The effects of imidazole dipeptide supplementation on sleep and performance - The effects of imidazole dipeptide supplementation on sleep and performance

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000026421

Enrollment

Registered

2017-03-06

Start date

2017-03-01

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 population

Interventions

Intake of imidazole dipeptide supplementation 1week intervention 0.5g*3(before breakfast,lunch,dinner) 1.5g/day Intake of placebo 1week intervention 0.5g*3(before breakfast,lunch,dinner) 1.5g/

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: 1. BMI <28m2 2. 6 to 9 hours of sleep duration 3. Non smoker 4. They do not take excessive caffeine 5. Moderate morning or intermediate type

Exclusion criteria

Exclusion criteria: 1. Sleeping hours differ for more than 45 minutes on weekdays and holidays 2. Turn off before 21 o'clock 3. Wake up after 9 o'clock

Design outcomes

Primary

Measure	Time frame
The present study is a balanced, randomized cross-over design with a 1-week intervening period. We evaluate the following items at before and after intake of supplement. Objective sleep quality (i.e. sleep latency, sleep efficiency) Subjective sleep quality (questionnaire) athletic performance for badminton skill short service test (success rate) travelling time in badminton court	—

Secondary

Measure	Time frame
Test for attention performance Go/No-go task Flexibility task	—

Countries

Japan

Contacts

Public ContactYuki Nakamura

University of Tsukuba Major of sport medicine

s1530397@u.tsukuba.ac.jp029-853-5600

Outcome results

None listed

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