Sleep in Women: A Review

Association between sleep quality and duration during pregnancy and risk of gestational diabetes: A systematic review and meta-analysis

OBJECTIVE

Gestational diabetes mellitus (GDM) is associated with several adverse maternal and neonatal outcomes. Previous studies reported a link between altered sleep and risk of GDM. This systematic review aims to collate evidence on the association between impaired sleep quality and duration, and the risk of GDM.

METHODS

PubMed, Embase, Web of Science, and Scopus databases were searched up to January 20, 2024. Studies reporting the association between impaired sleep quality and duration and risk of GDM were included. Sleep quality was assessed by the Pittsburgh Sleep Quality Index (PSQI). Random-effects meta-analysis was performed, and the results were reported as hazard ratio (HR) with 95% confidence interval (CI).

RESULTS

19 studies were included. Meta-analysis revealed a significant increase in the risk of GDM in pregnant women with poor sleep quality (i.e. <5 PSQI) (HR: 1.50, 95% CI: 1.26 - 1.78, p < .001). Sleep duration of <7 h (HR: 1.56, 95% CI.: 1.20 - 2.01, p < .001), and >8 h (HR: 2.32, 95% CI.: 1.19 - 4.50, p = .01) were also associated with a significantly higher incidence of GDM.

CONCLUSION

Sleep quality and duration emerge as critical risk factors of GDM. Healthcare practitioners should consider targeted interventions to improve sleep hygiene as a potential measure for GDM prevention.

An exploration into the sleep of workers on block-calving, pasture-based dairy farms

The benefits of sufficient and high-quality sleep for people are well documented. Insufficient sleep increases the risk of accidents, injuries, and negative health implications for people. This is especially relevant for farmers because they work with large animals and machinery. Dairy farming often requires early start times and long days, particularly over the high-workload calving period in block-calving, pasture-based systems. However, there is little published data quantifying the sleep quantity and quality of farmers over this period. In this study, the sleep patterns of workers (n = 33) on 10 New Zealand dairy farms were measured for 90 d over the spring calving period using a sleep measuring device (Oura ring, Oura Health Ltd., Oulu, Finland). Total sleep time (TST) averaged 6 h 15 min, lower than the required 7 to 9 h for optimal wellbeing and cognitive functioning. The TST decreased over the calving period and was significantly correlated with both sleep start and wake times. Factors such as work start time, farm location, and role on farm influenced sleep quantity and quality. Further research is required to better understand sleep and its effect on dairy farmers, over both the calving period and the remaining months of the year.

Promoting sleep health during pregnancy for enhancing women's health: a longitudinal randomized controlled trial combining biological, physiological and psychological measures, Maternal Outcome after THERapy for Sleep (MOTHERS)

BACKGROUND

Sleep is vital for maintaining individuals' physical and mental health and is particularly challenged during pregnancy. More than 70% of women during the gestational period report insomnia symptoms. Sleep dysfunction in the peripartum increases the risk for a cascade of negative health outcomes during late pregnancy, birth, and postpartum. While psychological interventions are considered the first line treatment for sleep difficulties, they are still scarcely offered during pregnancy and there is a lack of longitudinal research combining psychological and physiological indices.

METHODS

The present protocol outlines a randomized controlled trial aimed at testing the long-term effectiveness of an automatized digitalized psychoeducational intervention for insomnia for expectant mothers complaining insomnia symptoms without comorbidity. Outcomes include physiological, hormonal, and subjective indices of maternal psychopathology, stress, and emotional processes, and sleep and wellbeing of the family system. The trial is part of a longitudinal study evaluating expectant mothers from early pregnancy (within the 15th gestational week) to 6-months postpartum through 6 observational phases: baseline (BSL), 6- and 12-weeks from BSL (FU1-FU2), 2-to-4 weeks after delivery (FU3), and 3- and 6-months after delivery (FU4-5). We plan to recruit 38 women without sleep difficulties (Group A) and 76 women with sleep difficulties (Group B). Group B will be randomly assigned to digital psychological control intervention (B1) or experimental psychoeducational intervention targeting insomnia (B2). At 3 time points, an ecological-momentary-assessment (EMA) design will be used to collect data on sleep and emotions (diaries), sleep-wake parameters (actigraphy) and stress reactivity (salivary cortisol). We will also test the DNA methylation of genes involved in the stress response as biomarkers of prenatal poor sleep. Information on partner's insomnia symptoms and new-borns' sleep will be collected at each stage.

DISCUSSION

The proposed protocol aims at testing an easily accessible evidence-based psychoeducational intervention for expectant mothers to help them improving sleep, health, and wellbeing in the peripartum. The results could improve the understanding and management of sleep difficulties and peripartum depression.

TRIAL REGISTRATION

The study protocol has been registered on 22 April 2024 with ClinicalTrials.gov Protocol Registration and Results System (PRS), ID: NCT06379074.

PROTOCOL VERSION

April 23, 2024.

Decoding distress among pandemic pregnancies: Examining pregnancy distress and COVID-19 stress as concurrent predictors of current and anticipated postpartum sleep during the COVID-19 pandemic

OBJECTIVES

The goal of the present study was to examine pregnancy distress, COVID-19 stress, COVID-19 compliance, and life satisfaction as concurrent predictors of perceived current and anticipated postpartum sleep duration (SD) and quality among a U.S. sample of pregnant individuals.

METHODS

The sample comprised 544 pregnant individuals (62.3% non-Hispanic White; mean age = 28.0 and SD = 6.2), most of whom were in their third trimester (42.3%). Participants were recruited through an online panel (Qualtrics) between October and November 2020.

RESULTS

The primary analysis was based on a concurrent path model, which examined pregnancy distress, COVID-19 stress, COVID-19 compliance, and life satisfaction as predictors of current and anticipated postpartum SD and sleep quality, controlling for several demographic (eg, age and income), familial (eg, number of children and adults in the home), sleep-related (eg, chronotype and use of sleeping medication), and psychosocial functioning (eg, COVID-19 impact) variables. Results indicated that higher COVID-19 compliance was significantly associated with poorer current sleep quality. Furthermore, both pregnancy distress and COVID-19 stress predicted worse anticipated postpartum sleep quality (but not duration). Life satisfaction, however, was consistently significantly associated with current and anticipated postpartum SD and quality.

CONCLUSIONS

Findings are critical for understanding how various forms of stress correlate with sleep health behaviors during pregnancy, as well as expectations for postpartum sleep among a vulnerable population at risk for both psychological and sleep challenges during a period of unprecedented global stress.

Does self-compassion explain variance in sleep quality in women experiencing hot flushes?

OBJECTIVES

With poor sleep highly prevalent during the menopause transition, there is a need to better understand modifiable psychological resources that may be associated with improved sleep. Hence, we investigated whether self-compassion can explain variance in self-reported sleep quality in midlife women, over and above vasomotor symptoms.

METHODS

This cross-sectional study (N = 274) used questionnaire data from self-report measures of sleep, hot flushes and night sweats, hot flush interference, and self-compassion, with analyses conducted using sequential (hierarchical) regression.

RESULTS

Poor sleep, as measured by the Pittsburgh Sleep Quality Index, was prevalent and significantly worse in the subsample of women with hot flushes and night sweats, g = 0.28, 95 % CI [0.04, 0.53]. The interference of hot flushes in everyday life (β = 0.35, p < .01), but not their frequency, predicted self-reported sleep quality. Once self-compassion was added to the model it was the only predictor of poor sleep (β = -0.32, p < .01). When positive self-compassion and self-coldness were considered separately, the effect on sleep quality appeared to be attributable to self-coldness scores alone (β = 0.29, p < .05).

CONCLUSIONS

Self-compassion may have a stronger relationship with self-reported sleep quality in midlife women than vasomotor symptoms. Future intervention-based research could test the efficacy of self-compassion training for midlife women experiencing sleep disturbances, as this may be an important and modifiable psychological resilience factor.

Sleep Problems in Individuals With Intestinal Stomas and Determining the Quality of Sleep: A Multicenter Study

PURPOSE

The aim of this study was to determine sleep problems and the sleep quality of individuals with intestinal stomas.

DESIGN

Descriptive quantitative design was used.

SUBJECTS AND SETTING

The research was carried out from September 2018 to September 2019 at 3 university hospitals with stoma units located in Ankara, Turkey. The study sample comprised 222 individuals with intestinal ostomies who were being monitored in these 3 centers. Approximately half (N = 113, 50.9%) had an ileostomy and 68.5% (N = 152) had a temporary stoma. More than half of the participants (N = 116, 52.3%) reported current sleep problems, 59.5% (N = 132) reported that their stoma affected their sleep, and 64% (N = 142) had problems at night due to their stomas, reporting that they woke up frequently during their main sleep period due to ostomy-related problems.

METHODS

Three instruments were used to measure study outcomes: the researcher-designed instrument determining the descriptive characteristics of individuals with intestinal stomas, the Pittsburgh Sleep Quality Index, and Epworth Sleepiness Scale.

RESULTS

The mean Pittsburgh Sleep Quality Index score was found to be above 5 (13.42, SD: 3.01) indicating poor sleep quality. The mean Epworth Sleepiness Scale score was 7.54 (SD: 6.37) indicating that participants had daytime sleepiness. The mean Pittsburgh Sleep Quality Index scores of participants with ileostomies ( P = .002) and those with temporary stomas ( P = .009) were found to be significantly higher.

CONCLUSIONS

Study findings indicate that individuals with intestinal stomas have poor sleep quality and problems with daytime sleepiness; those with ileostomies and temporary stomas had the worst quality of sleep.

Cognitive-behavioral, behavioural and mindfulness-based therapies for insomnia in menopause

OBJECTIVES

Insomnia is frequently reported by women during menopause due to physiological changes and environmental factors and is associated with negative daytime sequelae. Due to medication side effects and patient preferences, there is increased interest in the use of psychological treatments for menopausal insomnia. The primary objective of this review is to review the efficacy of cognitive-behavioral, behavioral, and mindfulness-based (CBBMB) therapies in treating insomnia in peri- and post-menopausal women. The secondary objective is to review the effect of CBBMB therapies on relevant secondary outcomes to gain a comprehensive understanding of their impacts.

METHODS

We conducted a narrative review of the literature. A search of PubMed and Google Scholar was conducted between January 2020 and March 2021.

RESULTS

Cognitive-behavioral therapy (CBT) for insomnia is efficacious, with corollary improvements in mood, functional outcomes and potential mechanistic factors (e.g., unhelpful beliefs). Sleep restriction therapy is also efficacious, with somewhat poorer effects on secondary outcomes relative to CBT. Mindfulness meditation and relaxation for insomnia demonstrated promise, but its long-term effects remain unknown.

CONCLUSIONS

Research with more diverse samples and head-to-head comparisons is needed. Dissemination of CBBMBs for insomnia in clinics where menopausal women seek care is an important next step.

Preventing postpartum insomnia by targeting maternal versus infant sleep: a protocol for a randomized controlled trial (the Study for Mother-Infant Sleep “SMILE”)

Symptoms of insomnia are common during the perinatal periods and are linked to adverse parent/infant outcomes. Theories on insomnia development (e.g. 3P model) suggest that significant sleep disruption (e.g. nighttime infant care) can precipitate, while unhelpful sleep-related cognitions/behaviors can perpetuate parental insomnia symptoms. This study aims to examine how two interventions, one addressing infant sleep as the precipitator, the other targeting maternal sleep-related cognitions/behaviors as the perpetuator, might prevent postpartum insomnia. Participants are 114 nulliparous females 26 to 32 weeks gestation, with self-reported insomnia symptoms (Insomnia Severity Index scores ≥ 8). Participants are randomized to one of three conditions and receive: (1) a “responsive bassinet” used until 6 months postpartum, designed to boost/consolidate infant sleep and target infant sleep as a precipitator of insomnia, (2) therapist-assisted cognitive behavioral therapy for insomnia, addressing unhelpful sleep-related cognitions/behaviors as perpetuators of insomnia, or (3) a sleep hygiene booklet (control condition). The primary outcome is maternal insomnia symptoms. Secondary outcomes include maternal sleep duration/quality, mental health (e.g. depression, anxiety), and wellbeing-related variables (e.g. sleep-related impairment). Outcomes are assessed using validated instruments at 26–32 and 35–36 weeks’ gestation, and 2, 6, and 12 months postpartum. This study adopts an early-intervention approach and longitudinally compares two distinct approaches to prevent postpartum insomnia in an at-risk population. If interventions are efficacious, findings will demonstrate how interventions targeting different mechanisms mitigate insomnia symptoms in perinatal populations. This will provide empirical evidence for future development of multi-component sleep intervention to improve mother-infant wellbeing.

Clinical Trial Registration: The Study for Mother-Infant Sleep (The SMILE Project): reducing postpartum insomnia using an infant sleep intervention and a maternal sleep intervention in first-time mothers. https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=377927, Australian New Zealand Clinical Trials Registry: ACTRN12619001166167.

Mid-Pregnancy Insomnia and its Association with Perinatal Depressive Symptoms: A Prospective Cohort Study

Objective/Background: Insomnia and depression are disorders that affect many perinatal women and that often are interrelated. The present study aimed to examine concurrent and prospective associations between mid-pregnancy insomnia and depression during mid-pregnancy and 8 weeks postpartum. Furthermore, differences in depression and in the sleep-related characteristics insomnia, chronotype, and sleep efficiency were explored between the two time points (mid-pregnancy versus 8 weeks postpartum), and between primiparous and multiparous participants.Participants/Methods: The study was part of the Norwegian population-based Depression and Anxiety in the Perinatal Period (DAPP) prospective cohort study. Among 539 women that were recruited for participation when receiving a routine ultrasound examination, we analyzed data from hospital birth records and questionnaire responses from pregnancy week 17 and postpartum week 8. We used the Edinburgh Postnatal Depression Scale to measure depression. The Bergen Insomnia Scale, the reduced Horne-Östberg Morningness-Eveningness Questionnaire, and three questions from the Pittsburgh Sleep Quality Index were used to measure the sleep-related characteristics.Results: Mid-pregnancy insomnia was significantly associated with concurrent depression (p < .001), but not with postpartum depression (p = .288), in a linear mixed model with adjustment for several reproductive and psychosocial variables. Sleep efficiency was reduced from mid-pregnancy to postpartum (from 88% to 77%), and primiparous women reported less efficient sleep than multiparous women after childbirth.Conclusions: The results indicate that mid-pregnancy insomnia may be a marker for concurrent depression but not a predictor of postpartum depression. Future research should examine the extent to which treatment of insomnia from mid-pregnancy on reduces both perinatal insomnia and depression.

White Matter Microstructure Underlies the Effects of Sleep Quality and Life Stress on Depression Symptomatology in Older Adults

Sleep complaints are the most prevalent syndromes in older adults, particularly in women. Moreover, they are frequently accompanied with a high level of depression and stress. Although several diffusion tensor imaging (DTI) studies reported associations between sleep quality and brain white matter (WM) microstructure, it is still unclear whether gender impacts the effect of sleep quality on structural alterations, and whether these alterations mediate the effects of sleep quality on emotional regulation. We included 389 older participants (176 females, age = 65.5 ± 5.5 years) from the 1000BRAINS project. Neuropsychological examinations covered the assessments of sleep quality, depressive symptomatology, current stress level, visual working memory, and selective attention ability. Based on the DTI dataset, the diffusion parameter maps, including fractional anisotropy (FA), mean diffusivity (MD), axial diffusivity (AD), and radial diffusivity (RD), were calculated and normalized to a population-specific FA template. According to the global Pittsburgh Sleep Quality Index (PSQI), 119 poor sleepers (PSQI: 10∼17) and 120 good sleepers (PSQI: 3∼6) were identified. We conducted a two by two (good sleepers/poor sleepers) × (males/females) analysis of variance by using tract-based spatial statistics (TBSS) and JHU-ICBM WM atlas-based comparisons. Moreover, we performed a voxel-wise correlation analysis of brain WM microstructure with the neuropsychological tests. Finally, we applied a mediation analysis to explore if the brain WM microstructure mediates the relationship between sleep quality and emotional regulation. No significant differences in brain WM microstructure were detected on the main effect of sleep quality. However, the MD, AD, and RD of pontine crossing tract and bilateral inferior cerebellar peduncle were significant lower in the males than females. Voxel-wise correlation analysis revealed that FA and RD values in the corpus callosum were positively related with depressive symptomatology and negatively related with current stress levels. Additionally, we found a significantly positive association between higher FA values in visual-related WM tracts and better outcomes in a visual pattern recognition test. Furthermore, a mediation analysis suggested that diffusion metrics within the corpus callosum partially mediated the associations between poor sleep quality/high stress and depressive symptomatology.

Mid-pregnancy insomnia is associated with concurrent and postpartum maternal anxiety and obsessive-compulsive symptoms: A prospective cohort study

BACKGROUND

Although many perinatal women are affected by anxiety, few studies have focused on perinatal anxiety and its potential triggers. The primary aim of this study was to examine concurrent and prospective associations between mid-pregnancy insomnia and perinatal anxiety. Furthermore, we compared psychosocial and reproductive characteristics between participants with and without mid-pregnancy insomnia and explored changes in the prevalence of obsessive-compulsive disorder (OCD) symptoms from mid-pregnancy to 8 weeks postpartum.

METHODS

This study was part of the Norwegian Depression and Anxiety in the Perinatal Period (DAPP) prospective, population-based, cohort study. We analyzed hospital birth records and questionnaire responses from pregnancy week 17 and postpartum week 8 (n = 530). The Bergen Insomnia Scale was used to measure insomnia and the Hopkins Symptom Checklist to measure anxiety. OCD symptoms were measured based on questions from the Mini-International Neuropsychiatric Interview.

RESULTS

Mid-pregnancy insomnia was significantly associated with both concurrent and postpartum anxiety in a linear mixed model adjusted for several potential confounders. Participants with mid-pregnancy insomnia had significantly higher levels of perinatal anxiety and postpartum OCD symptoms than participants with normal mid-pregnancy sleep. OCD symptoms affected more women after delivery than before (6.4% vs. 3.8% p = 0.034).

LIMITATIONS

Immigrants were underrepresented in our sample.

CONCLUSION

Our results suggest that mid-pregnancy insomnia is a marker for concurrent anxiety and predictor of postpartum anxiety. Future research should examine whether insomnia treatment starting in mid-pregnancy reduces both perinatal insomnia and anxiety. Health providers should also be aware that postpartum women have an increased risk of developing OCD symptoms.

Non-pharmacological interventions for improving postpartum maternal sleep: A systematic review and meta-analysis

Evidence suggests that poor postpartum sleep quality is a risk factor for the development of postpartum depression. As such, non-pharmacological interventions have been developed to help improve sleep in the postpartum period. The primary aims of this systematic review and meta-analysis were to determine if non-pharmacological interventions improved maternal sleep and to compare the effectiveness of different intervention types. Secondary aims included examining effects on maternal mood and infant sleep. We searched MEDLINE, EMBASE, CINAHL, PsycINFO, and Web of Science from their inceptions to September 2017 and found 15 eligible studies. Non-pharmacological sleep interventions were found to improve subjective reports of maternal sleep (Cohen's d = -0.54, 95%CI = -0.88 to -0.19). Massage (Cohen's d = -1.07 95%CI = -1.34 to -0.79) and exercise (Cohen's d = -0.82 95%CI = -1.28 to -0.37) interventions had the largest impact on maternal sleep quality. Positive effects on nocturnal infant sleep were found for interventions overall (Cohen's d = -0.27 95%CI = -0.52 to -0.02) but not for maternal depression (Cohen's d = -0.08 95%CI = -0.28 to 0.12). Despite evidence suggesting improvements in subjective maternal sleep, more research must be conducted on the durability of effects of non-pharmacological interventions using objective measures of sleep quality.