Sleep Quality and Cognitive Functions in Adults: A Cross-Sectional Study
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-35
SponsorUskudar University
About this trial
This observational cross-sectional study aims to examine the association between sleep quality and cognitive functions in healthy young adults. Subjective sleep quality will be assessed using the Pittsburgh Sleep Quality Index, and objective sleep parameters will be collected using a wearable device over five consecutive days. Cognitive functions will be evaluated at a single assessment session using standardized neuropsychological tests, including measures of attention, executive functions, and verbal memory. The study seeks to explore relationships between subjective and objective sleep measures and cognitive performance. Findings from this study may contribute to a better understanding of how sleep quality is associated with cognitive functioning in healthy young adults.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Between 18 and 35 years.
Ability and willingness to provide written informed consent.
Sufficient ability to read, understand, and communicate in Turkish, the language in which the assessments are administered.
Self-reported good general health, with no active medical or psychiatric conditions that significantly affect daily functioning.
Disqualifiers
Regular or frequent use of medications known to affect sleep or cognitive function, including sedative-hypnotics, benzodiazepines, antipsychotics, stimulants, opioids, or similar agents.
Initiation of, or dose changes in, psychotropic medications within the past four weeks.
Being under the influence of alcohol or illicit substances on the day of cognitive testing.
Engagement in night shift work or rotating shift schedules within the past one month.
Trial population
The study population consists of healthy young adults aged between 18 and 35 years. Participants are recruited from a non-clinical population and are required to be fluent in Turkish to ensure valid administration of cognitive assessments. Individuals with self-reported good general health and without active medical, neurological, or psychiatric conditions that may affect sleep or cognitive functioning are eligible. All participants are able and willing to comply with the study procedures, including wearing a wearable sleep monitoring device for five consecutive days and completing a single-session cognitive assessment.
Trial design
Design model
Other
Time perspective
Cross-sectional
Treatments tested in this trial
Not listed
Trial groups
75 Participants
are grouped into 1 trial groupGroup A: Healthy Young Adults
Trial outcomes
Primary outcomes
1
Composite Objective Sleep Quality Index Derived From Wearable Device
A composite objective sleep quality index will be derived from wearable device data collected continuously over five consecutive days. The composite score will be calculated by combining standardized values of total sleep time, sleep efficiency, sleep onset latency, and wake after sleep onset into a single summary measure representing overall objective sleep quality.
Time frame
During 5 consecutive days around baseline assessmentSecondary outcomes
1
Sleep Quality (Pittsburgh Sleep Quality Index Scores)
Subjective sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PSQI). The total PSQI score ranges from 0 to 21, with higher scores indicating poorer sleep quality.
Time frame
Baseline (single assessment)2
Cognitive Performance (Victoria Stroop Test Scores)
Attention and executive functions will be assessed using the Victoria Stroop Test. Outcome measures include completion time and error scores obtained during the test.
Time frame
Baseline (single assessment)3
Verbal Memory Performance (Öktem Verbal Memory Processes Test Scores)
Verbal memory will be evaluated using the Öktem Verbal Memory Processes Test. Outcome measures include standardized scores reflecting learning and recall performance.
Time frame
Baseline (single assessment)Sponsors and contacts
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Uskudar University
Lead sponsor
The Scientific and Technological Research Council of Turkey
Collaborator
Source ClinicalTrials.gov