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| Name | Class |
|---|---|
| Chinese University of Hong Kong | OTHER |
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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Experimental Group (nap) | Experimental | The experimental group will be allowed to take a brief nap daily on school days during the study period. |
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| Control Group (no nap) | No Intervention | The control group will not be allowed to take daily nap on school days during the study period. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Nap | Behavioral | Participants will be given 20-min nap opportunity in the classroom on a daily basis during school-days. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in objectively measured cognitive performance (sustained attention) | 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) | 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) | 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) | 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) | 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) | accuracy in match to sample task | Day 1 (before napping), Day 1 (after napping), two weeks and two months after intervention |
| Measure | Description | Time Frame |
|---|---|---|
| Change in daytime sleepiness | 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) |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Shirley X. Li, PhD, DClinPsy | The University of Hong Kong | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sleep Research Clinic & Laboratory, Department of Psychology, The University of Hong Kong | Hong Kong | Hong Kong |
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| ID | Term |
|---|---|
| D012892 | Sleep Deprivation |
| ID | Term |
|---|---|
| D020920 | Dyssomnias |
| D012893 | Sleep Wake Disorders |
| D009422 | Nervous System Diseases |
| D009461 | Neurologic Manifestations |
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Experimental group (with daytime classroom nap) versus control group (without nap)
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Assessors who are responsible for conducting the cognitive tests are blinded to the group allocation.
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) | 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 |
| D012816 |
| Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D001523 | Mental Disorders |