The effects of difference of water level on renal artery blood flow in sitting position at rest among healthy young adults.

The effects of difference of water level on renal artery blood flow in sitting position at rest among healthy young adults. - The effects of difference of water level on renal artery blood flow in sitting position at rest among healthy young adults.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000044504

Enrollment

Registered

2021-06-11

Start date

2021-07-10

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

Healthy adults

Interventions

Sitting position at rest on land &gt

in water (trochanter major level) &gt

(xiphoid process) &gt

(incisure jugularis)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Those who have been diagnosed as having no abnormalities in ECG or kidneys in the physical examination (according to the subject's self-report) and have agreed to the purpose of this study.

Exclusion criteria

Exclusion criteria: 1) Those who have been diagnosed with cardiovascular or renal diseases in the physical examination, 2) Those who have lower limb locomotor disorder and have difficulty entering the water tank used in this study, 3) Smokers, 4) Those who have allergic reactions to zinc (acrylic synthetic fiber) and alcohol, 5) Those who have been confirmed to have an adrenal artery with the same diameter as the main renal artery.

Design outcomes

Primary

Measure	Time frame
renal artery blood flow indices (blood flow velocity: MnV, mean blood flow velocity: Vm, and blood vessel resistant index: RI)	—

Secondary

Measure	Time frame
Blood pressure, heart rate, cardiac autonomic nervous system activity, body height, body weight, body mass index, body fat percentage, muscle percentage, abdominal circumference	—

Countries

Japan

Contacts

Public ContactKumiko ONO

Kobe University Graduate School of Health Sciences

onoku@tiger.kobe-u.ac.jp0787964582

Outcome results

None listed

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