The Relationship Between Power Sleep and Sleep Quality, Depression, and Stress Levels in University Students

NCT07315269 | Completed

• 1 other identifier: ZTKLAB003102022DSEC23092022237
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

This prospective cohort study aims to evaluate the effects of daily daytime power napping on sleep quality, depression, and perceived stress levels among healthy individuals. The study particularly investigates whether these effects differ between daytime workers and shift workers. Participants are required to practice a 15-20 minute (maximum 30 minutes) power nap daily for a period of six weeks. Changes in psychological and sleep parameters are assessed using the Jenkins Sleep Scale (JSS), Beck Depression Scale (BDS), and Perceived Stress Scale (PSS) before and after the intervention.

Conditions

Sleep Quality; Depression Disorders; Stress, Psychological; Occupational Stress

Keywords

Naps; Power napping; Shift workers; Daytime sleep; Mental health; Prospective cohort study

Outcome Measures

Primary Outcomes (1)

• Change in Sleep Quality as measured by the Jenkins Sleep Scale

  The JSS is a 4-item scale used to assess sleep problems, specifically focusing on difficulties falling asleep and maintaining sleep quality. Each item is scored on a 6-point Likert scale (0-20 total range). Higher scores indicate more sleep problems.

  Baseline (Day 0) and at the end of the 6-week intervention period.

Secondary Outcomes (2)

• Change in Depressive Symptoms as measured by the Beck Depression Scale (BDS/BDI)

  Baseline (Day 0) and at the end of the 6-week intervention period.

• Change in Perceived Stress as measured by the Perceived Stress Scale (PSS).

  Baseline (Day 0) and at the end of the 6-week intervention period.

Study Arms (1)

Daytime Power Nap Group

EXPERIMENTAL

A group of 40 participants who are instructed to perform a 15-20 minute power nap daily for 6 weeks.

Behavioral: Daytime Power Napping

Interventions

Daytime Power Napping BEHAVIORAL

The duration, effectiveness, and method of intervention in this area should be clearly stated: Duration Per Session: Each nap is planned to be between 15-20 minutes, and limited to a maximum of 30 minutes to prevent sleepiness (sleep inertia). Total Duration: The intervention is a 6-week process. Target Group: 40 healthy volunteers (including day and shift workers). Goal: To enhance the privacy of sleep in daily life, reduce virus spread, and decrease stress.

Daytime Power Nap Group

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Being a healthy volunteer.
• Being actively employed as either a daytime worker or a shift worker.
• Providing written informed consent to participate in the study.
• Willingness to adhere to a 6-week daytime power napping protocol.

You may not qualify if:

• Presence of diagnosed severe sleep disorders (e.g., severe insomnia or sleep apnea) that might interfere with the study protocol.
• Inability to complete the 6-week power napping intervention.
• Missing or incomplete psychological scale data at baseline or post-test.
• Failure to perform the power nap as instructed during the study period.

Sponsors & Collaborators

• okkes zortuk: lead

Study Sites (1)

Dicle University

Diyarbakır, Diyarbakar, 21000, Turkey (Türkiye)

Location

Related Publications (3)

• Brown JP, Martin D, Nagaria Z, Verceles AC, Jobe SL, Wickwire EM. Mental Health Consequences of Shift Work: An Updated Review. Curr Psychiatry Rep. 2020 Jan 18;22(2):7. doi: 10.1007/s11920-020-1131-z.

  PMID: 31955278 BACKGROUND

• Faraut B, Boudjeltia KZ, Dyzma M, Rousseau A, David E, Stenuit P, Franck T, Van Antwerpen P, Vanhaeverbeek M, Kerkhofs M. Benefits of napping and an extended duration of recovery sleep on alertness and immune cells after acute sleep restriction. Brain Behav Immun. 2011 Jan;25(1):16-24. doi: 10.1016/j.bbi.2010.08.001. Epub 2010 Aug 8.

  PMID: 20699115 BACKGROUND

• Juhola J, Arokoski JPA, Ervasti J, Kivimaki M, Vahtera J, Myllyntausta S, Saltychev M. Internal consistency and factor structure of Jenkins Sleep Scale: cross-sectional cohort study among 80 000 adults. BMJ Open. 2021 Jan 18;11(1):e043276. doi: 10.1136/bmjopen-2020-043276.

  PMID: 33462100 RESULT

MeSH Terms

Conditions

Sleep Initiation and Maintenance Disorders; Stress, Psychological; Occupational Stress; Psychological Well-Being

Condition Hierarchy (Ancestors)

Sleep Disorders, Intrinsic; Dyssomnias; Sleep Wake Disorders; Nervous System Diseases; Mental Disorders; Behavioral Symptoms; Behavior; Occupational Diseases; Personal Satisfaction

Study Officials

• Ökkeş Zortuk

  Emergency Medicine Department, Defne Government Hospital

  PRINCIPAL INVESTIGATOR

• Yeşim Dersuneli, MSc

  Clinical Psychology, Muş Alparslan University

  STUDY DIRECTOR

• Özlem Tolan, PHd

  Clinical Psychology, Dicle University

  STUDY CHAIR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Masking Details: Daytime Power Nap Group
• Purpose: SUPPORTIVE CARE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Manager

Study Record Dates

• First Submitted: December 18, 2025
• First Posted: January 2, 2026
• Study Start: December 1, 2023
• Primary Completion: January 1, 2024
• Study Completion: December 1, 2024
• Last Updated: January 2, 2026

Record last verified: 2023-12

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)