Analysis of chronotype and rhythm stability based on activity and sleep

Analysis of chronotype and rhythm stability based on activity and sleep - ChronoSleep

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00033631

Enrollment

111

Registered

2024-02-29

Start date

2021-06-25

Completion date

Unknown

Last updated

2026-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

sleep disruption

Interventions

Group 1: healthy subjects Data on sleep, heart rate and activity are collected using a Fitbit tracker for a period of 24 weeks. After the data collection period has expired, the participants register

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: healthy subjects

Exclusion criteria

Exclusion criteria: Chronic illnesses and regular medication use. Employees of the Institute of Anatomy II.

Design outcomes

Primary

Measure	Time frame
sleep quality The objective sleep quality is recorded using a longitudinal Fitbit sleep analysis for 24 weeks. After the 24 weeks, subjective sleep quality (PSQI) as well as depression and anxiety (PHQ4) are recorded once using standardized questionnaires.	—

Secondary

Measure	Time frame
Potential influencing factors on sleep quality The chronotype and chronotype-related parameters such as social jet lag and sleep deficit are collected using longitudinal Fitbit sleep analysis for 24 weeks. After the 24 weeks, body measurements and general living conditions and depression/anxiety are collected once using questionnaires.	—

Countries

Germany

Contacts

Public ContactCharlotte von Gall

Medizinische Fakultät der Heinrich Heine Universität

charlotte.vongall@med.uni-duesseldorf.de+492118115046

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 7, 2026