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

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

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019806

Enrollment

Registered

2015-11-30

Start date

2015-11-30

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

Hypertension

Interventions

Group nutritional counselling (dietary salt reduction

once) Individual nutritional counselling (dietary salt reduction

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

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

twice)

Eligibility

Sex/Gender

All

Inclusion criteria

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.

Exclusion criteria

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

Design outcomes

Primary

Measure	Time frame
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.	—

Secondary

Measure	Time frame
Blood pressure (On starting and finishing the study)	—

Countries

Japan

Contacts

Public ContactKazuyo Kuwabara

Keio University School of Medicine Department of Preventive Medicine and Public health

kuwabara@keio.jp03-5363-3758

Outcome results

None listed

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