UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000019806
Receipt number R000022888
Scientific Title Comparison of urinary sodium potassium ratio by nutritional counseling; dietary salt reduction and with increasing dietary potassium
Date of disclosure of the study information 2015/11/30
Last modified on 2019/02/18 10:37:13

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Basic information

Public title

Comparison of urinary sodium potassium ratio by nutritional counseling; dietary salt reduction and with increasing dietary potassium

Acronym

Comparison of urinary sodium potassium ratio by nutritional counseling; dietary salt reduction and with increasing dietary potassium (Na-K Study)

Scientific Title

Comparison of urinary sodium potassium ratio by nutritional counseling; dietary salt reduction and with increasing dietary potassium

Scientific Title:Acronym

Comparison of urinary sodium potassium ratio by nutritional counseling; dietary salt reduction and with increasing dietary potassium (Na-K Study)

Region

Japan


Condition

Condition

Hypertension

Classification by specialty

Cardiology

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

Hypertension is associated with taking the amount of sodium and potassium intake. Though dietary salt reduction has been introduced as a way of nutritional counselling, increasing potassium has not been recognized. Recently, urinary sodium and potassium ratio could be measured by the portable device. Through the measurement of urinary sodium and potassium ratio, we compare the nutritional counseling by reducing dietary salt with by salt reduction and increasing potassium.

Basic objectives2

Others

Basic objectives -Others

Through the measurement of urinary sodium and potassium ratio, we compare the nutritional counseling by reducing dietary salt with by salt reduction and increasing potassium.

Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

The amount of urine sodium excretion in 24 hour urine collection.
The amount of urine potassium excretion in 24 hour urine collection.
Urinary sodium and potassium ratio (24-hour urine collection)
Measuring urinary sodium and potassium ratio with portable device.

Key secondary outcomes

Blood pressure
(On starting and finishing the study)


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Open -no one is blinded

Control

No treatment

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

2

Purpose of intervention

Educational,Counseling,Training

Type of intervention

Other

Interventions/Control_1

Group nutritional counselling (dietary salt reduction; once)
Individual nutritional counselling (dietary salt reduction; twice)

Interventions/Control_2

Group nutritional counselling (dietary salt reduction and increasing potassium intake; once)
Individual nutritional counselling (dietary salt reduction and increasing potassium intake; twice)

Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

40 years-old <=

Age-upper limit

60 years-old >=

Gender

Male and Female

Key inclusion criteria

40-60 years old male and female
Systolic blood pressure more than 140 mmHg or Diastolic blood pressure more than 90 mmHg on health examination.
Under treatment of hypertension.

Key exclusion criteria

・ Disapproval
・Starting or changing the medications for hypertension within 3 months
・ Secondary hypertension
・ Ischemic heart disease or stroke
・ Renal disorder (proteinuria or hematuria)
・ Nutrition counselling has been undesired.
・ Potassium intake has been undesired.
・Arrhythmia

Target sample size

70


Research contact person

Name of lead principal investigator

1st name
Middle name
Last name Tomonori Okamura

Organization

Keio University School of Medicine

Division name

Department of Preventive Medicine and Public health

Zip code


Address

35 Shinanomachi Shinjyuku-ku, Tokyo, Japan

TEL

03-5363-3758

Email

okamura@keio.jp


Public contact

Name of contact person

1st name
Middle name
Last name Kazuyo Kuwabara

Organization

Keio University School of Medicine

Division name

Department of Preventive Medicine and Public health

Zip code


Address

35 Shinanomachi Shinjyuku-ku, Tokyo, Japan

TEL

03-5363-3758

Homepage URL


Email

kuwabara@keio.jp


Sponsor or person

Institute

Department of Preventive Medicine and Public Health, Keio University School of Medicine

Institute

Department

Personal name



Funding Source

Organization

The research grant of The Japanese Society of Cardiovascular Disease Prevention

Organization

Division

Category of Funding Organization

Other

Nationality of Funding Organization

Japan


Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization


Address


Tel


Email



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



Other administrative information

Date of disclosure of the study information

2015 Year 11 Month 30 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results

In December 2015, the intervention on the small scale was carried out. The number of subjects registered was 2 (male) and it was confirmed that there was no problem in the intervention protocol in the work area.
The target was recruited from January to February 2017, and the actual intervention was conducted in January to March of the same year divided into 6 courses. The number of new registrants was ten (total of 13 registered as of November 20, 2017). The urinary sodium potassium ratio showed a downward trend in both groups in the 2 weeks of the study period. There was no statistically significant difference before and after the intervention of both groups and each group, but the urinary sodium potassium ratio fell more in the intervention group than in the control group.

Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Completed

Date of protocol fixation

2015 Year 09 Month 16 Day

Date of IRB


Anticipated trial start date

2015 Year 11 Month 30 Day

Last follow-up date


Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2015 Year 11 Month 16 Day

Last modified on

2019 Year 02 Month 18 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000022888


Research Plan
Registered date File name
2017/12/03 修正_研究計画書_第3版20161128承認版.docx

Research case data specifications
Registered date File name

Research case data
Registered date File name