Protocol summary

Study aim
The present study aims to show how much napping could help our cognitive performance during the day and how much it helps increase productivity.
Design
The current clinical trial is not blinded. Among the eligible people of Zare Hospital's sleep clinic department, 15 people were randomly selected using the rand function of Excel software to participate in both phases of intervention and non-intervention.
Settings and conduct
participant's Daytime naps and Cognitive assessments will be performed in the sleep and psychiatric disorders clinic.
Participants/Inclusion and exclusion criteria
The entry criteria of the participants include having an age range between 25 and 50 years and a body mass index between 18.5 and 24.5, the absence of sleep, neurocognitive disorders, and not being a shift worker. Furthermore, the exclusion criteria include a history of severe mental or neurological diseases, hearing problems, color blindness, and the use of sleeping pills.
Intervention groups
During the intervention phase, the participants will take a 30-minute nap in the afternoon.
Main outcome variables
In both stages, attention will be evaluated with the Stroop test, working memory will be assessed with the Back Digit Span task, and recognition memory will be evaluated with Auditory Verbal Learning Test.

General information

Reason for update
Acronym
IRCT registration information
IRCT registration number: IRCT20210804052077N1
Registration date: 2022-12-31, 1401/10/10
Registration timing: registered_while_recruiting

Last update: 2022-12-31, 1401/10/10
Update count: 0
Registration date
2022-12-31, 1401/10/10
Registrant information
Name
Shahab Zare
Name of organization / entity
Allameh Tabatabai University
Country
Iran (Islamic Republic of)
Phone
+98 11 3452 6925
Email address
zare_shahab@atu.ac.ir
Recruitment status
Recruitment complete
Funding source
Expected recruitment start date
2022-12-16, 1401/09/25
Expected recruitment end date
2023-02-14, 1401/11/25
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
Effect of daytime nap on performance of attention, working memory, and recognition memory
Public title
Investigating the effect of daytime nap on performance of attention, working memory, and recognition memory
Purpose
Supportive
Inclusion/Exclusion criteria
Inclusion criteria:
The entry criteria of the participants include having an age range between 25 and 50 years old. body mass index (BMI) between 18.5 and 24.5 absence of any kind of sleep disorders and also neuro-cognitive disorders not to be a shift worker
Exclusion criteria:
using sleeping pills Hearing problem Colorblind History of mental or neurological diseases
Age
From 25 years old to 50 years old
Gender
Both
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size: 15
Randomization (investigator's opinion)
N/A
Randomization description
Blinding (investigator's opinion)
Not blinded
Blinding description
Placebo
Not used
Assignment
Single
Other design features

Secondary Ids

empty

Ethics committees

1

Ethics committee
Name of ethics committee
Research Ethics Committees of Allameh Tabataba'i University
Street address
Allameh Tabataba'i University, Varzesh Sq., Dehkadeh Olympic, Tehran, Iran.
City
Tehran
Province
Tehran
Postal code
۱۴۸۹۶۸۴۵۱۱
Approval date
2022-08-27, 1401/06/05
Ethics committee reference number
IR.ATU.REC.1401.030

Health conditions studied

1

Description of health condition studied
cognitive functions
ICD-10 code
R41.89
ICD-10 code description
Other symptoms and signs involving cognitive functions and awareness

Primary outcomes

1

Description
Attention
Timepoint
No experience of a daytime nap - another day after experiencing afternoon sleep for 30 minutes
Method of measurement
Stroop test

2

Description
Working Memory
Timepoint
No experience of a daytime nap - another day after experiencing afternoon sleep for 30 minutes
Method of measurement
Back Digit Span Task

3

Description
Recognition Memory
Timepoint
No experience of a daytime nap - another day after experiencing afternoon sleep for 30 minutes
Method of measurement
Auditory Verbal Learning Test

Secondary outcomes

1

Description
Learning
Timepoint
No experience of a daytime nap - another day after experiencing afternoon sleep for 30 minutes
Method of measurement
Auditory Verbal Learning Test

Intervention groups

1

Description
Intervention group: 30 minutes daytime nap, between 14:00 and 16:00
Category
Behavior

2

Description
Control group: without daytime nap
Category
Behavior

Recruitment centers

1

Recruitment center
Name of recruitment center
sleep and psychiatric disorders clinic
Full name of responsible person
Javad Setareh
Street address
Khazar boulevard, Sari, Mazandaran province
City
Sari
Province
Mazandaran
Postal code
4851635981
Phone
+98 905 711 4656
Email
jsetareh@mazums.ac.ir

Sponsors / Funding sources

1

Sponsor
Name of organization / entity
Allameh Tabataba'i University
Full name of responsible person
Davoud Hosseinpour
Street address
Allameh Tabataba'i University, Varzesh Sq., Dehkadeh Olympic, Tehran, Iran.
City
Tehran
Province
Tehran
Postal code
1489683991
Phone
+98 21 4473 7561
Email
hosseinpour@atu.ac.ir
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Allameh Tabataba'i University
Proportion provided by this source
100
Public or private sector
Public
Domestic or foreign origin
Domestic
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
Academic

Person responsible for general inquiries

Contact
Name of organization / entity
Allameh Tabatabai University
Full name of responsible person
Shahab Zare
Position
Student
Latest degree
Master
Other areas of specialty/work
Psychology
Street address
Zahedi 2 Alley, In front of Behpak company, shahid hashemi nejad Blvd
City
Behshahr
Province
Mazandaran
Postal code
4851635981
Phone
+98 11 3452 6925
Fax
Email
zare_shahab@atu.ac.ir

Person responsible for scientific inquiries

Contact
Name of organization / entity
Allameh Tabataba'i University
Full name of responsible person
Fariborz Dortaj
Position
Professor
Latest degree
Ph.D.
Other areas of specialty/work
Psychology
Street address
Allameh Tabataba'i University, Varzesh Sq., Dehkadeh Olympic, Tehran, Iran
City
Tehran
Province
Tehran
Postal code
1489684511
Phone
+98 21 4473 7682
Email
dortaj@atu.ac.ir

Person responsible for updating data

Contact
Name of organization / entity
Mazandaran University of Medical Sciences
Full name of responsible person
Javad Setareh
Position
Associate professor
Latest degree
Specialist
Other areas of specialty/work
Psychiatrics
Street address
Zare burn and psychiatric hospital, Sari, Mazandaran Province
City
Sari
Province
Mazandaran
Postal code
۳۳۹۷۱۴۸۱۵۷
Phone
+98 11 3328 3886
Email
jsetareh@mazums.ac.ir

Sharing plan

Deidentified Individual Participant Data Set (IPD)
Undecided - It is not yet known if there will be a plan to make this available
Study Protocol
Undecided - It is not yet known if there will be a plan to make this available
Statistical Analysis Plan
Undecided - It is not yet known if there will be a plan to make this available
Informed Consent Form
Undecided - It is not yet known if there will be a plan to make this available
Clinical Study Report
Undecided - It is not yet known if there will be a plan to make this available
Analytic Code
Undecided - It is not yet known if there will be a plan to make this available
Data Dictionary
Undecided - It is not yet known if there will be a plan to make this available
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