Effect of Nap on Daytime Functioning in Primary School Students

April 24, 2021 updated by: Dr. Shirley Xin Li, The University of Hong Kong

Effects of Short Daytime Nap on Neurocognitive Functioning and Behavior in Chinese Primary School Children

Previous studies showed that insufficient sleep has a negative impact on children's physical and psychological health. Napping was found to decrease sleepiness and improve daytime functioning in adults and adolescents. The effects of napping on children, however, is unknown. The current study aims to test the effects of short daytime classroom naps on daytime functioning and behaviour in elementary school children.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This study is an interventional study testing the effects of short daytime nap on children's cognitive functioning and daytime behaviour. Primary school children will be randomised to either experimental (nap) or control group (no nap) by class. Measurements include parent-report questionnaires, children's self-report questionnaires, and cognitive tasks.

Study Type

Interventional

Enrollment (Actual)

654

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Hong Kong, Hong Kong
        • Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

5 years to 15 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Children from grade 1, 2, 3, 5, and 6

Exclusion Criteria:

  • Children ages 4 or younger, ages 15 or older

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Experimental Group (nap)
The experimental group will be allowed to take a brief nap daily on school days during the study period.
Participants will be given 20-min nap opportunity in the classroom on a daily basis during school-days.
No Intervention: Control Group (no nap)
The control group will not be allowed to take daily nap on school days during the study period.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in objectively measured cognitive performance (sustained attention)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Reaction time (ms) in psychomotor vigilance task
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Change in objectively measured cognitive performance (sustained attention)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Lapses defined by reaction time (RT) more than 500ms in psychomotor vigilance task
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Change in objectively measured cognitive performance (inhibitory control)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
false alarm rate (%) in Go-no go task
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Change in objectively measured cognitive performance (inhibitory control)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
reaction time (ms) in Go-no go task
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Change in objectively measured cognitive performance (working memory)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
reaction time (ms) in match to sample task
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Change in objectively measured cognitive performance (working memory)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
accuracy in match to sample task
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in daytime sleepiness
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Daytime sleepiness as measured by Pediatric Daytime Sleepiness Scale (PDSS). Higher scores suggest more sleepiness.
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Change in daytime behaviour (emotional & behavioural problems)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Daytime behaviors as measured by Strengths and Difficulties Questionnaires (SDQ). Higher scores suggest more emotional and behavioural problems.
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Change in daytime behaviour (ADHD symptoms)
Time Frame: Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention
Strengths and Weakness of Attention-Deficit/ Hyperactivity-symptoms and Normal-behaviors (SWAN). Higher scores suggest more severe ADHD symptoms
Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Shirley X. Li, PhD, DClinPsy, The University of Hong Kong

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 1, 2018

Primary Completion (Actual)

May 1, 2020

Study Completion (Actual)

December 1, 2020

Study Registration Dates

First Submitted

February 3, 2020

First Submitted That Met QC Criteria

February 13, 2020

First Posted (Actual)

February 17, 2020

Study Record Updates

Last Update Posted (Actual)

April 27, 2021

Last Update Submitted That Met QC Criteria

April 24, 2021

Last Verified

April 1, 2021

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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