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NCT Number: NCT04270539

Effect of Nap on Daytime Functioning in Primary School Students

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.

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Key information

Conditions

Sleep Deprivation Dyssomnias Mental Disorders Nervous System Diseases Neurologic Manifestations Pathological Conditions, Signs and Symptoms Signs and Symptoms Sleep Wake Disorders

Age range

5 year–15 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

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

Hong Kong

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

  • Children ages 4 or younger, ages 15 or older

Treatment and study plan

Nap

Behavioral

Participants will be given 20-min nap opportunity in the classroom on a daily basis during school-days.

Primary outcomes

  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

Secondary outcomes

  1. 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.

  2. 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.

  3. 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

Sponsors and collaborators

Lead sponsor

The University of Hong Kong

Other

Collaborators

  • Chinese University of Hong Kong

Registry information

Official study title

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

Important dates

Study start
2018
Primary completion
2020
Study completion
2020
First posted
Feb 17, 2020
Registry last updated
Apr 27, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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