Effect of prolonged working hour to heart rate variability in Internal Medical doctors

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20210716007

Enrollment

Registered

2021-07-16

Start date

2021-07-13

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Healthy subject Heart Rate Variability Medical doctor Working hour

Interventions

The Medical Doctor is Internal Medicine residents, interns, externs who have 32-hour working periods in Maharaj Nakorn Chiang Mai Hospital.

Health Services Research

Medical Doctor

Eligibility

Sex/Gender

All

Age

18 Years to 35 Years

Inclusion criteria

Inclusion criteria: Volunteer Internal Medicine residents, interns, externs who have 32-hour working periods in Maharaj Nakorn Chiang Mai Hospital with: 1. Age > 18-35 years 2. No underlying disease 3. No substance abuse

Exclusion criteria

Exclusion criteria: 1. Participant who not give inform consent 2. Participant who have drink alcohol, caffeine, stimulant drug, tobacco 8 hours before participate to the study

Design outcomes

Primary

Measure	Time frame
Time domain HRV 8 hours Holter ECG monitoring	—

Secondary

Measure	Time frame
Cardiac Arrhythmia 8 hours Holter ECG monitoring	—

Countries

Thailand

Contacts

Public ContactPongsatorn Tungsuk

Faculty of Medicine, Chiang Mai University

ptungsuk@gmail.com0946014304

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026