Exploration of potential objective and subjective daily indicators of sleep health in normal sleepers

Abstract

PurposeWhile the concept of “sleep health” has only recently been defined, how it relates to both subjective and objective sleep parameters is yet to be determined. The current study aimed to identify potential indicators of poorer sleep health, from subjective and objective daily sleep characteristics, in normal sleepers.Participants and methodsEighty-three individuals aged 18–65 years with no history of sleep disorders, chronic physical or psychiatric illnesses, or substance misuse were recruited from the North of England. Secondary analysis of a series of standardized studies, which included psychometrics, actigraphy, and an in-lab polysomnography (PSG) component, was undertaken. Questions from several psychometric sleep scales were combined to create an aggregate measure of sleep health status. Subjective sleep continuity was assessed by 2-week sleep diary. Objective measures comprised two continuous weeks of actigraphy and two nights of in-lab PSG.ResultsSignificant negative correlations were evident between sleep health scores and both diary-derived subjective sleep latency (SL; diary) and actigraphy-derived SL (actigraphy). This was reflected by independent samples t-test between high and low sleep health groups. No relationships between sleep health and PSG parameters were observed. Regression analyses indicated sleep latencies from both the sleep diary and actigraphy as significant predictors, explaining 28.2% of the variance in sleep health.ConclusionPerceived increases in SL appear to be a primary indicator of declining sleep health in normal sleepers. The majority of objective sleep parameters, including gross PSG sleep parameters, appear not to be sensitive to sleep health status in normal sleepers. Future research is needed to understand the physical and psychological correlates of sleep health in larger samples.

Seizing the opportunity: factors influencing the discrepancy between self-reported and objective sleep

“…In summary, we deeply appreciate the letter by Sharman et al 1 but hope to have clarified all issues raised. As reported by the authors' research group earlier, 5 differences between selfreported and objective sleep measures are common, even in healthy individuals. We expand on this topic by reporting effects of different types of sleep disorders on sleep misperception.…”

Greater variability in daily sleep efficiency predicts depression and anxiety in young adults: Estimation of depression severity using the two-week sleep quality records of wearable devices

“…Besides, we found a low correlation between PSQI and sleep efficiency. A non-significant association between subjective and objective sleep quality was found in previous studies ( 56 , 57 ) in which psychological and physical discrepancies were also evident. Subjective sleep quality seems to be affected by psychological health ( 56 ); our DSEM finding that PSQI did not predict the PHQ or GAD score could be viewed as an extension of such results.…”

Measuring Sleep Quality and Efficiency With an Activity Monitoring Device in Comparison to Polysomnography

“…The subjective information given by the participants in the questionnaires did not correlate to the PAM data. This is of further interest since subjective parameters provided by questionnaire are inconstant [1] in comparison to PSG sleep parameters. A recent study showed that the majority of objective sleep parameters appear not to be sensitive to sleep health status in normal sleepers [10].…”

“…The interest in sleep and sleep quality has grown strongly among the population in recent years. Sleep is not only essential for the optimal performance of physical, cognitive and emotional processes but also a vital biological determinant of everyday health and well-being [1]. For athletes in particular, the connections between memory consolidation, newly learned training techniques (training optimization) and increased competitive performance through restful sleep seem to be of importance and are making sleep quality increasingly the focus of new research questions [2].…”