CClinicalTrials.gg
Not yet recruitingNCT06714422Updated Dec 3, 2024

Apples in Night Shift

An interventional study of apple group and no apple group in Night Work, sponsored by Peking University Third Hospital. Not yet recruiting. Open to participants aged 20 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-12-03.

Sponsored by Peking University Third Hospital · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Apr 2025, 1 year 6 months ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
20 Years to 40 Years
Sex
All
01

Study summary

Background: Emergency doctors face a highly stressful work environment during night shifts. Long-term night shift work can lead to sleep deprivation, fatigue accumulation, and disruption of the biological clock, which may affect doctors' work efficiency and physical and mental health. There are various health interventions for night shift doctors, one of which is an interesting practice of carrying an apple as a symbol of the "night shift deity" to relieve anxiety and improve work efficiency. Although this behavior is not supported by sufficient scientific evidence, it has become a common habit among some doctors during night shifts due to its simplicity, low risk, and ritualistic nature.

Objective: To assess whether carrying an apple during night shifts can significantly reduce fatigue, decrease work intensity, and enhance work experience for emergency doctors.

Design: Single-center, open-label, randomized controlled trial.

Participants: several doctors with a total of 60 emergency working night shifts.

Primary Outcome: Average number of patients per night shift.

Sample Size: The study plans to recruit several doctors with a total of 60 emergency night shifts and randomly assign them to the experimental group and the control group. One doctor can be randomized for many times.

Read the detailed description

Background: Emergency doctors face a highly stressful work environment during night shifts. Long-term night shift work can lead to sleep deprivation, fatigue accumulation, and disruption of the biological clock, which may affect doctors' work efficiency and physical and mental health. There are various health interventions for night shift doctors, one of which is an interesting practice of carrying an apple as a symbol of the "night shift deity" to relieve anxiety and improve work efficiency. Although this behavior is not supported by sufficient scientific evidence, it has become a common habit among some doctors during night shifts due to its simplicity, low risk, and ritualistic nature.

Objective: To assess whether carrying an apple during night shifts can significantly reduce fatigue, decrease work intensity, and enhance work experience for emergency doctors.

Design: Single-center, open-label, randomized controlled trial.

Participants: several doctors with a total of 60 emergency working night shifts.

Primary Outcome: Average number of patients per night shift.

Sample Size: The study plans to recruit several doctors with a total of 60 emergency night shifts and randomly assign them to the experimental group and the control group. One doctor can be randomized for many times.

02

Conditions studied

  • Night Work

Keywords

  • night shift
  • apple
  • doctor
  • emergency department
03

In context

Lead sponsor

Peking University Third Hospital is the lead sponsor of 735 studies on the registry; 262 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

Doctors who have a night shift in the emergency department of gynaecology with at least two weeks experience.

Exclusion criteria

Exclusion Criteria:

Doctors who refuse to join the study

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
60 participants (estimated)

Study arms

  • Active comparator
    no apple group

    No apples during night shift

    Procedure: no apple group

  • Experimental
    apple group

    Doctors will bring apples during night shift

    Procedure: apple group

Interventions

  • Procedureapple group

    Doctors will bring apples during night shift

  • Procedureno apple group

    No apples during night shift

06

What researchers measure

Primary outcomes

  1. number of patients

    Number of patients during the night shift

    Time frame: from 5pm on the Randomization day to 8am on the next day

Secondary outcomes

  1. Evaluation of night shifts

    Overall evaluation of night shifts by doctors (Good, Average, Poor)

    Time frame: from 5pm on the Randomization day to 8am on the next day

  2. Emergency admissions

    Admissions of emergency patients during the night shift randomized.

    Time frame: from 5pm on the Randomization day to 8am on the next day

  3. Emergency surgery number

    Number of patients who experience emergency surgery during the night shift.

    Time frame: from 5pm on the Randomization day to 8am on the next day

  4. Emergency uterine evacuation number

    Number of patients who need emergency uterine evacuation during the night shift.

    Time frame: from 5pm on the Randomization day to 8am on the next day

  5. Complicated patients number

    The number of patients needs to be checked by a senior doctor

    Time frame: from 5pm on the Randomization day to 8am on the next day

  6. Doctor's break time

    The time (hours) of the doctor's break.

    Time frame: from 5pm on the Randomization day to 8am on the next day

  7. Number of patients admitted to emergency room

    The number of people who need to be admitted to the emergency room

    Time frame: from 5pm on the Randomization day to 8am on the next day

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: Yes — all night shift data

Supporting information: Study protocol, Sap

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 3, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06714422
Lead sponsor
Peking University Third Hospital
Responsible party
Li Rong (Professor, Peking University Third Hospital) — Principal investigator
First posted
Dec 3, 2024
Start date
Jan 1, 2025 (estimated)
Primary completion
Apr 1, 2025 (estimated)
Completion
Apr 1, 2025 (estimated)
Last update
Dec 3, 2024

Study contacts

Kai-Lun Hu, MD
Contact
hukailun@bjmu.edu.cn
86-15901575271

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.

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