Ignite Creation Date:
2024-06-16 @ 11:50 AM
Last Modification Date:
2024-10-26 @ 3:31 PM
Study NCT ID:
NCT06440434
Status:
ACTIVE_NOT_RECRUITING
Last Update Posted:
2024-06-13
First Post:
2024-05-14
Brief Title:
Effects of Morningness on Night Split Shift Performance
Sponsor:
University of Bergen
Organization:
University of Bergen
Study Overview
Official Title:
Effects of Morningness on Night Split Shift Performance
Status:
ACTIVE_NOT_RECRUITING
Status Verified Date:
2024-06
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The goal is to investigate if the morningness-eveningness dimension mediates sleep and function on spilt night shifts midnight-4am and 4am-8am
Does those with high score of morningness function relatively better on the last compared to the first split shift
Participants will
Record their sleep from 2 days prior to 2 days following the split shift During the shifts complete questionnaires assessing mood sleepiness and perceived performance as well as complete cognitive tests Psychomotor vigilance test digit symbol substitution test working memory scanning test reversal learning test and visual search test
Does those with high score of morningness function relatively better on the last compared to the first split shift
Participants will
Record their sleep from 2 days prior to 2 days following the split shift During the shifts complete questionnaires assessing mood sleepiness and perceived performance as well as complete cognitive tests Psychomotor vigilance test digit symbol substitution test working memory scanning test reversal learning test and visual search test
Detailed Description:
A sample of 28 students will be recruited and exposed to two conditions in a randomized controlled crossover study They will be assessed with subjective sleep diary and objective sleep measures sleep radar for 2 days before the night shift during the night shift and 2 days following the night shift The simulated night shifts will last from midnight to 8am and will be divided into two halves midnight-4am and 4am-8am denoted as split-shift and for each participant separated by at least 1 week Based on the Horne-Östberg Morningness-Eveningness Questionnaire median spilt two groups are created from which participants will be randomized to the two orders of the spilt-shift
Each hour on each shift the participants will complete Positive and Negative Affect Schedule PANAS Karolinska Sleepiness Scale perceived performance and the following cognitive tests Psychomotor vigilance test Digit symbol substitution test Working memory scanning test Reversal learning test and Visual search test
Data will be analyzed with linear mixed models with three fixed factors Group low vs high morningness shift midnight-4am vs 4am-8am and hour and one random factor participant
Each hour on each shift the participants will complete Positive and Negative Affect Schedule PANAS Karolinska Sleepiness Scale perceived performance and the following cognitive tests Psychomotor vigilance test Digit symbol substitution test Working memory scanning test Reversal learning test and Visual search test
Data will be analyzed with linear mixed models with three fixed factors Group low vs high morningness shift midnight-4am vs 4am-8am and hour and one random factor participant
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None