Analysis of preference for green tea beverages

UMIN ID: UMIN000056653

Registered date:08/01/2025

Basic Information

• Recruitment status: Complete: follow-up continuing
• Health condition(s) or Problem(s) studied: No
• Date of first enrollment: 2025/01/08
• Target sample size: 320
• Countries of recruitment: Japan
• Study type: Interventional

Intervention(s)

Take 5 types (A,B,C,D,E) of test foods on the day of the test. Initially, test food A is ingested. (Sensory evaluation of each test food and completion of a questionnaire prior to consumption of the test food.) Wash out (6 days later) Take 7 types of test foods on the day of the test. (Sensory evaluation of each test food and completion of a questionnaire after consumption of all test foods.)
Take 5 types (A,B,C,D,E) of test foods on the day of the test. Initially, test food B is ingested. (Sensory evaluation of each test food and completion of a questionnaire prior to consumption of the test food.) Wash out (6 days later) Take 7 types of test foods on the day of the test. (Sensory evaluation of each test food and completion of a questionnaire after consumption of all test foods.)
Take 5 types (A,B,C,D,E) of test foods on the day of the test. Initially, test food C is ingested. (Sensory evaluation of each test food and completion of a questionnaire prior to consumption of the test food.) Wash out (6 days later) Take 7 types of test foods on the day of the test. (Sensory evaluation of each test food and completion of a questionnaire after consumption of all test foods.)
Take 5 types (A,B,C,D,E) of test foods on the day of the test. Initially, test food D is ingested. (Sensory evaluation of each test food and completion of a questionnaire prior to consumption of the test food.) Wash out (6 days later) Take 7 types of test foods on the day of the test. (Sensory evaluation of each test food and completion of a questionnaire after consumption of all test foods.)
Take 5 types (A,B,C,D,E) of test foods on the day of the test. Initially, test food E is ingested. (Sensory evaluation of each test food and completion of a questionnaire prior to consumption of the test food.) Wash out (6 days later) Take 7 types of test foods on the day of the test. (Sensory evaluation of each test food and completion of a questionnaire after consumption of all test foods.)

Outcome(s)

• Primary Outcome: RMSE(Root Mean Squared Error)

Key inclusion & exclusion criteria

• Age minimum: 20years-old
• Age maximum: 49years-old
• Gender: Male and Female
• Exclude criteria: 1. Individuals with abnormalities in taste or smell 2. Individuals who have experienced health issues from commercially available green tea beverages 3. Individuals who may experience health problems due to ingredients contained in green tea. 4. Individuals with chronic diseases requiring medication during the pre-trial and main trial periods, or with a history of severe diseases requiring medication (such as diabetes, liver disease [hepatitis], kidney disease, heart disease, thyroid disease, adrenal disease, or other metabolic disorders) 5. Individuals with a history of gastrointestinal diseases affecting digestion and absorption, or with a history of gastrointestinal surgery 6. Individuals regularly taking medications that may affect mental state 7. Individuals with a history or current condition of drug or alcohol dependence 8. Individuals with a history of mental illness or epilepsy 9. Individuals with allergies to medications or foods

Related Information

• Primary Sponsor: Kirin Holdings Company, Limited
• Source(s) of Monetary Support: Kirin Holdings Company, Limited