A Randomized Controlled Trial Evaluating the Effects of Basic Five-Taste Pairing Training and Umami Taste Recall Training

A Randomized Controlled Trial Evaluating the Effects of Basic Five-Taste Pairing Training and Umami Taste Recall Training - A Randomized Controlled Trial Evaluating the Effects of Basic Five-Taste Pairing Training and Umami Taste Recall Training

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000057759

Enrollment

Registered

2025-05-02

Start date

2025-06-15

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

Taste dysfunction

Interventions

1 Basic Five Tastes Three days of taste pairing training will be conducted. 2 Umami taste Three days of taste recall training will be conducted using NaCl, monosodium glutamate, disodium inosinate,

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1.Healthy adult men and women aged 20 to 64 2.No history of taste disorders and not currently diagnosed with any taste abnormality by a physician 3.Individuals who have provided written informed consent to participate in the study

Exclusion criteria

Exclusion criteria: 1.Individuals deemed unsuitable for participation in the study by a physician 2.Individuals who declined to participate in the study 3.Individuals with allergies to sucrose, sodium chloride, L(+)-tartaric acid, quinine hydrochloride, monosodium glutamate (MSG), disodium inosinate (IMP), or disodium guanylate (GMP) 4.Smokers

Design outcomes

Primary

Measure	Time frame
1. Whether taste recognition thresholds for the five basic tastes improve through pairing training 2. Improvement in the ability to discriminate among three types of umami and salty taste	—

Countries

Japan

Contacts

Public ContactMidori Miyagi

Tohoku University Graduate School of Medicine Department of Rehabilitation Medicine

midori.miyagi.b5@tohoku.ac.jp022-717-7353

Outcome results

None listed

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