Study of monitoring on circadian rhythms of eating behavior and housing environment

Study of monitoring on circadian rhythms of eating behavior and housing environment - Study on circadian rhythms of life-style

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000043835

Enrollment

Registered

2021-06-01

Start date

2021-06-24

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

Diabetes, Dyslipidemia, Hypertension, Obesity

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Outpatients in the Department of Endocrinology, Metabolism, and Nephrology, Keio University Hospital. 1. Being at least 20 years of age and less than 80 years old when the consent is signed. 2. Patients deemed competent by doctors to execute this study such as handling a smartphone, installing fitness tracker, flush glucose monitoring, and environmental sensors. 3. Patients who sign a consent form based on his or her sufficient understanding and voluntary decision following adequate information on this study.

Exclusion criteria

Exclusion criteria: 1. Patients on oral or intravenous adrenocorticosteroids, or melatonin receptor agonists. 2. Chronic kidney disease of estimated glomerular filtration rate (eGFR) less than 30 mL/min/1.73m2. 3. Patients using implanted medical devices such as cardiac pacemakers. 4. Patients with pregnancy or possible pregnancy. 5. Patients with poorly controlled psychiatric disorders 6. Patients unable to sign a consent form, to understand the outline and purpose of the study, or to need legally authorized representative. 7. Patients deemed unsuitable for the study by doctors

Design outcomes

Primary

Measure	Time frame
Correlation of daily rhythmicity among the following measurements is explored as primary outcomes. Intrinsic factors such as salivary cortisol, melatonin, and microbiota in the oral cavity, along with heart rate, activity (exercise, walking, and calorie consumption), sleep (including but not limited to wakeup time and bedtime), subcutaneous glucose levels, in combination with diurnal variation of external factors such as eating behavior and housing environments (temperature, humidity, illumination, air pressure, noise, carbon dioxide concentration, air quality, ultraviolet levels, discomfort index, heat stroke risks, opening motions of refrigerators, and electricity usage) are evaluated.	—

Measure

Time frame

Correlation of daily rhythmicity among the following measurements is explored as primary outcomes. Intrinsic factors such as salivary cortisol, melatonin, and microbiota in the oral cavity, along with heart rate, activity (exercise, walking, and calorie consumption), sleep (including but not limited to wakeup time and bedtime), subcutaneous glucose levels, in combination with diurnal variation of external factors such as eating behavior and housing environments (temperature, humidity, illumination, air pressure, noise, carbon dioxide concentration, air quality, ultraviolet levels, discomfort index, heat stroke risks, opening motions of refrigerators, and electricity usage) are evaluated.

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Countries

Japan

Contacts

Public ContactKenichiro Kinouchi

Keio University School of Medicine Department of Endocrinology, Metabolism, and Nephrology

ken-k@keio.jp03-5363-3796

Outcome results