UMIN-CTR Clinical Trial

Basic information
Official scientific title of the study	Double-Blind, Placebo-Controlled Study for the Effect of Daily Ingestion of Yabukita green tea and Sun Rouge green tea on the Improvement of Blood Pressure and Eyestrain
Title of the study (Brief title)	The Effect of Daily Ingestion of the green tea on the improvement of Blood Pressure and Eyestrain
Region	Japan

Condition
Condition	Healthy adults
Classification by specialty	Adult
Classification by malignancy	Others
Genomic information	YES

Objectives
Narrative objectives1	To prove the clinical usefulness of daily ingestion of Yabukita green tea or Sun Rouge green tea for 12 weeks on blood pressure and eyestrain improvement.
Basic objectives2	Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2	Pragmatic
Developmental phase	Not applicable

Assessment
Primary outcomes	systolic blood pressure and diastolic blood pressure (hospital blood pressure and home blood pressure), focus-adjustment function
Key secondary outcomes	VAS questionnaire for eyestrain symptoms, intraocular pressure, peripheral blood flow, MDA-LDL,TBARS,SOD,8-OHdG, hs-CRP,adiponectin, ADMA, blood RNA related to functional expression of the green tea-component, total homocysteine, LDL-C

In outcomes field, the entry of just a few words such as "safety" or "efficiency" will not be accepted. Specify the name of outcome measures, including the time when you plan to measure. Usually, only one primary outcome is accepted. Write the other outcomes in "secondary outcomes" field.

Base
Study type	Interventional

Study design
Basic design	Parallel
Randomization	Randomized
Randomization unit	Individual
Blinding	Double blind -all involved are blinded
Control	Placebo
Stratification	YES
Dynamic allocation	YES
Institution consideration	Institution is not considered as adjustment factor.
Blocking	YES
Concealment	No need to know

Intervention
No. of arms	3
Purpose of intervention	Treatment
Type of intervention	Food
Interventions/Control_1	Ingestion of Yabukita green tea daily for 12 weeks
Interventions/Control_2	Ingestion of Sun Rouge green tea daily for 12 weeks
Interventions/Control_3	Ingestion of barley tea for 12 weeks
Interventions/Control_4
Interventions/Control_5
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10

In interventions field, include the details of interventions, such as duration, amount, and frequency. If the intervention includes prescription or use of medical devices, duration is required.

Eligibility
Age-lower limit	20 years-old <=
Age-upper limit	60 years-old >
Gender	Male and Female
Key inclusion criteria	Subjects whose blood pressure meet either of the following criteria 1. Hospital SBP is 130 mmHg or more and less than 160 mmHg and DBP is less than 100 mmHg 2. Hospital DBP 80 mmHg or more and less than 100 mmHg and SBP is less than 160 mmHg 3. Home SBP is 125 mmHg or more and less than 155 mmHg and DBP is less than 95 mmHg 4. Home DBP is 75 mmHg or more and less than 95 mmHg and SBP is less than 155mmHg Subjects who agree to participate in the current study with a written informed consent
Key exclusion criteria	1. Subjects who are under treatment and medication for hypertension 2. Subjects who are under treatment and medication for ocular disease (except for myopia, astigmatism, hyperopia, presbyopia, dry eye, and allergc conjunctival disease) or with serious ocular diseases. 3. Subjects who have a major ophthalmic surgical history such as cataract, glaucoma, refractive correction 4. Subjects with serious cerebrovascular, cardiac, hepatic, renal, and / or gastrointestinal diseases, or affected with an infectious disease which is required to report to the authorities 5. Subjects who have a major surgical history related to digestive system such as gastrectomy 6. Subjects with unusually high and/or low blood pressure or abnormal hematological data 7. Subjects with serious anemia 8. Pre- or post-menopausal subjects having complaints of obvious physical changes 9. Subjects who are at risk of having allergic reactions to drugs or foods (especially green tea) 10. Subjects who has high caffeine sensitivity 11. Subjects regularly take medicine, functional foods and/or supplements ( peptide, acetic acid, GABA, geniposidic acid, flavonoids, sesamin, chlorella, olive leaves, garlics, dietary fiber, tomatoes, folic acid, etc.) which would affect the blood pressure 12. Subjects regularly take medicine, functional foods and/or supplements (anthocyanin, lutein, astaxanthin, blueberry, beta-carotene, vitamin, DHA, EPA etc.) which would affect the visual fatigue 13. Heavy smokers, alcohol addicts or subjects with irregular lifestyle 14. Subjects who donate either 400ml whole blood within 12 weeks or 200ml whole blood within 4 weeks or blood components within 2 weeks prior to this study 15. Subjects who are pregnant or expected to be pregnant, or lactating during the study 16. Subjects who participate in other clinical trials within the last one month prior to the current clinical trial 17. Any other medical reasons judged by the principal investigator
Target sample size	108

Research contact person
Name of lead principal investigator	Prof. Jun NISHIHIRA, M.D., Ph.D.
Organization	Hokkaido Information University
Division name	Department of Medical Management and Informatics
Address	59-2, Nishi-nopporo, Ebetsu, Hokkaido, 069-8585, Japan
TEL	011-385-4411
Email	nishihira@do-johodai.ac.jp

Public contact
Name of contact person	Dir. Prof. Jun NISHIHIRA, M.D., Ph.D.
Organization	Hokkaido Information University
Division name	Center of Health Information Science
Address	59-2, Nishi-nopporo, Ebetsu, Hokkaido, 069-8585, Japan
TEL	011-385-4430
Homepage URL
Email	nishihira@do-johodai.ac.jp

Sponsor
Institute	Hokkaido Information University
Institute
Department

Sponsor means an organization that is responsible for plan, deployment and report of the research including funding management. It doesn't mean funding agency". Therefore, all clinical trial should have the one.

Funding Source
Organization	Ministry of Agriculture, Forestry and Fisheries
Organization
Division
Category of Funding Organization	Japanese Governmental office
Nationality of Funding Organization

Other related organizations
Co-sponsor	National Food Research Institute, National Agriculture and Food Research Organization
Name of secondary funｄer(s)

Secondary IDs
Secondary IDs	NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2
IND to MHLW

Institutions
Institutions	北海道情報大学　保健センター（北海道）

Other administrative information
Date of disclosure of the study information	2015 Year 07 Month 29 Day

Progress
Recruitment status	Completed
Date of protocol fixation	2015 Year 06 Month 22 Day
Anticipated trial start date	2015 Year 07 Month 29 Day
Last follow-up date	2015 Year 12 Month 02 Day
Date of closure to data entry	2016 Year 01 Month 14 Day
Date trial data considered complete	2016 Year 01 Month 21 Day
Date analysis concluded	2016 Year 02 Month 29 Day

Related information
URL releasing protocol
Publication of results	Unpublished
URL releasing results
Results
Other related information

Management information
Registered date	2015 Year 07 Month 29 Day
Last modified on	2016 Year 07 Month 15 Day

Link to view the page
URL(English)	https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000021388