Social Rhythm Research Articles

Diagnostic usefulness of 24‐h polysomnography for idiopathic hypersomnia co‐occurring with neurodevelopmental disorders: A case report

AbstractBackgroundAlthough central disorders of hypersomnolence (CDH) and attention‐deficit/hyperactivity disorder (ADHD) are frequently comorbid, they often remain underdiagnosed, leading to insufficient treatment and sociopsychological outcomes.Case PresentationHere, we present a case of a male in his late 20s with ADHD and autism spectrum disorder who exhibited symptoms suggestive of idiopathic hypersomnia (IH), a subtype of CDH. The patient experienced difficulty waking up and dropped out of university. Additionally, although methylphenidate extended‐release was prescribed, he often forgot to take his medication, resulting in difficulty waking up until late afternoon. No symptoms related to rapid eye movements sleep were observed. Considering the possibility of concurrent hypersomnia with neurodevelopmental disorders, we conducted 24‐h polysomnography (PSG). The results demonstrated total sleep time of 774.5 min (≥660 min). Together with other criteria, we diagnosed him as having IH. Following discharge and discussion with the patient, we provided sleep hygiene education for him, and he resumed day care attendance to establish a social routine.ConclusionIn cases where hypersomnia may co‐occur with neurodevelopmental disorders, active utilization of 24‐h PSG enables detailed evaluation of sleep–wake patterns and behaviors, facilitating effective guidance on sleep hygiene and promoting improvements in social rhythms and sociability.

Ordinary encounters: living space and social rhythms among the American Gitanos of Mexico City

ABSTRACT For the Gitanos of Mexico City, the importance of dynamic community connections and doing things together – aspects of the intensive encounters associated with an active social life – give rise to a fluid social and cultural identity. Space is an inherent element of the latter; they are interdependent and constructed simultaneously. As such, anot locked up at homen intimate relationship can be established between urban space and the Gitanos who inhabit it. This article proposes that the activities carried out in these spaces are of a cultural nature: they form part of the space for sociability and cultural education, which are particularly important to the Gitanos. Social rhythms are highly significant as they demonstrate how locations impact subjects and the type of activities they carry out in different spaces. I have attempted to understand these rhythms by measuring the frequency of Gitano meetings in various urban environments.

Adaptive Hyperactivity and Biomarker Exploration: Insights from Elders in the Blue Zone of Sardinia.

Background/Objectives: Adaptive hyperactivity characterized by increased activity levels and novelty-seeking traits without mood disorders is prevalent among older adults in Sardinia's "blue zone," an area with high longevity. This study aims to evaluate the adaptive nature of hyperactivity concerning quality of life, social rhythms, and mood symptoms in individuals from this region, particularly among elderly adults over 80. Methods: This observational cross-sectional study included adults and older adults over 80 from Sardinia's blue zone. This study included a sample of patients followed at the Center for Consultation Psychiatry and Psychosomatics for Bipolar Disorder of the University Hospital of Cagliari and a homogeneous comparison sample of patients without psychiatric pathologies, referred to the Dermatology Clinic of the same hospital, for a period of 6 months, from February to August 2024. The general sample, divided into two parts-cases, represented by patients with psychiatric pathology, and controls, patients without psychiatric pathology-was divided in turn into three sub-groups: "adults" (18-64 years), young elders (65-79), and old elders (over 80 years). The participants underwent psychiatric interviews and completed the Mood Disorder Questionnaire (MDQ), Patient Health Questionnaire (PHQ-9), SF-12, and Brief Social Rhythm Scale (BSRS). Data were compared with national and regional normative data. Results: Older adults in the blue zone demonstrated higher MDQ positivity (22.58%) compared to the national averages (0.87%), without corresponding increases in dysregulated rhythms, depressive symptoms, or reduced quality of life. Younger old persons (65-79 years) showed increased rhythm dysregulation (BSRS score: 20.64 ± 7.02) compared to adults (17.40 ± 6.09, p = 0.040), but this trend was not observed in the oldest group (80+ years). No significant differences were found in the CH3SH and (CH3)2S levels between groups. Conclusions: The hyperactivity observed in older adults from Sardinia's blue zone appears adaptive and not linked to social rhythm dysregulation, depressive symptoms, or a diminished quality of life, suggesting resilience factors which may contribute to longevity. These findings support the potential classification of such hyperactivity as beneficial rather than pathological, warranting further research into biomarkers and psychoeducational interventions to prevent the onset of bipolar disorders in predisposed individuals.

Eating jetlag and risk of cardiovascular disease: prospective study of the NutriNet-Santé cohort

Abstract Background Social jetlag corresponds to the misalignment between biological circadian rhythms and the social rhythm imposed by society, resulting in discrepant activity/sleep schedules during work and free days. It has been associated with worsened biological parameters such as BMI or glycemic control. Eating jetlag is a related yet emerging concept defined as the difference of meal timing between free and work days. However, it has been little explored. This study aims to evaluate the association between eating jetlag and the risk of cardiovascular disease (CVD). Methods Dietary, anthropometric, socio-demographic and health data of 104,837 participants (79% women, mean age=42.7 years (14.6 SD)) were collected from the NutriNet-Santé cohort. Eating jetlag was calculated using time of first and last meals on weekdays and weekends, from repeated 24 dietary records, averaged during the 2 first years. It was assessed as a continuous variable or as 3 categories: ‘Advance’, ‘Maintenance’, ‘Delay’, compared to work days. CVD was self-reported and validated against medical records. The associations between eating jetlag and CVD risk were assessed through adjusted Cox models. Results During a median follow-up time of 8.1 years, 2,368 CVD cases were diagnosed. Eating jetlag showed a U-shaped association with CVD risk (HR Advance vs. Maintenance=1.05(95% CI: 0.87-1.26); HR Delay vs. Maintenance=1.08(0.96-1.21)). When the absolute value of eating jetlag was considered, there was a linear association with CVD risk (HR per 1-hour increase=1.05(1.00-1.12)). These linear trends were confirmed in categorial models (Low: ≤1h; Moderate: 1h< to ≤ 2h; High: >2h): HR Moderate vs. Low=1.05(0.94-1.18), and HR High vs. Low=1.13(0.94-1.37); however, statistical significance was not reached. Conclusions Our results suggest a potential role for meal timing regularity between free and work days in CVD etiology. They need to be replicated in other studies and mechanisms are yet to be fully understood. Key messages • Adopting regular meal timing schemes on work and free days could be associated with a lower risk of cardiovascular diseases. • Meal regularity between work and free days could play a role in cardiovascular health and should be further investigated.

Treatment-Resistant Mood Disorders.

The objective of the study was to explore the presentation of symptoms in patients suffering from treatment-resistant mood disorder (TRMD), and associated clinical features, including age, gender, and comorbid conditions, that lead towards the development of treatment-resistant mood disorder. Furthermore, the study analyses the available psychotherapeutic treatment modalities and evidence-based non-medical treatment approaches for TRMD. The current study utilized a systematic review approach where 37 articles were studied and three articles were theoretically sampled to authenticate and signify the findings. PRISMA guidelines were followed and the review was conducted by searching social sciences databases and electronic libraries including Google Scholar, Sage Journal, and Science Direct (1990-2020). The results suggested that psychotherapeutic interventions including cognitive behavior therapy, mindful-based cognitive therapy; and interpersonal and social rhythm therapeutic interventions are efficacious modalities for treatment when in augmentation with psychopharmacological treatment. Bipolar diathesis and comorbid conditions of anxiety and personality disorders are possible causal factors in developing the condition of treatment resistance in mood disorders. The prevalence rate of TRMD is more common in females and in late adulthood. The analysis also suggests that there are numerous risk factors contributing to making a mood disorder treatment-resistant over a period of time; the most observed conditions were physical and psychological comorbidity, inaccurate diagnosis, lack of proper medical treatment, illness severity, and late age diagnosis. In evidence-based non-medical treatment approaches aerobics demonstrated promising results in improving the condition of complex mood disorders. It was concluded that psychotherapeutic interventions in augmentation with pharmacological modalities enhance the efficacy of treatment.

An exploratory pilot study on social rhythm regularity, and its associations with sleep, circadian, affective, and alcohol use outcomes in late adolescents.

The current exploratory pilot study examined whether social rhythm regularity, as measured by a social rhythm metric, was associated with: (1) the regularity of circadian rhythms and/or sleep regularity metrics; and (2) sleep quality, affective function and alcohol use. Late adolescents (18-22 years old) who drink alcohol (n = 36; 61.1% female, Mage = 21.26 years) completed a 14-day ecological momentary assessment protocol, wore a wrist actigraph for 14 days, and completed two overnight visits (Thursday and Sunday) to assess dim light melatonin onset. Sleep regularity metrics included standard deviation, composite phase deviation, social jet lag and inter-daily stability. We used dim light melatonin onset data to calculate the stability of the circadian phase (Sunday minus Thursday). Participants completed surveys and ecological momentary assessments that assessed global and daily sleep quality, affective function, and alcohol use. Correlational analysis and robust regression modelling were used. More regular social rhythms were associated with higher regularities of mid-sleep timing based on standard deviations, but were not associated with other sleep regularity metrics or stability of the circadian phase. More regular social rhythms were associated with better sleep quality, but were not associated with affective function or alcohol use. Social rhythm regularity is a unique construct compared with existing sleep quality metrics. In contrast with the social zeitgeber hypothesis, social rhythm regularity was not associated with circadian rhythm regularity measured by dim light melatonin onset. However, social rhythm regularity may be an under-recognized contributor to better sleep quality.

Interpersonal and Social Rhythm Therapy’s Effectiveness on Functional Outcomes among Clients with Bipolar Disorders

Interpersonal and Social Rhythm Therapy’s Effectiveness on Functional Outcomes among Clients with Bipolar Disorders

Mood Disorder Questionnaire Positivity in Systemic Lupus Erythematosus and Other Chronic Diseases including Screen Bipolar Disorders or Rhythm and Energy Dysregulation Syndromes (DYMERS).

This study explores the issue of paper-and-pencil screening tests for bipolar disorder, often leading to false positives. It discusses hypotheses that connect MDQ positivity with sleep disorders, a decline in health-related quality of life, and the impact of the COVID-19 pandemic on mood disorders. The study proposes that MDQ identifies a "Dysregulation of Mood, Energy, and Social Rhythms Syndrome" (DYMERS), indicating a stress-related condition. It aims to investigate the association between MDQ positivity and systemic lupus erythematosus (SLE) in comparison to other chronic disorders. This case-control study, conducted from April 2019 to February 2020, investigated MDQ positivity in patients with SLE. Ethical approvals were obtained, and statistical analysis was used for data assessment. This is a case-controlled study where MDQ positivity was significantly higher in systemic lupus erythematosus cases than controls. The analysis compared gender, age, and the presence of depressive episodes between MDQ-positive and MDQ-negative cases, revealing some differences but no significant variations. Interestingly, no association with high prednisone or biologics use was observed. The frequency of MDQ positivity in systemic lupus erythematosus was compared to other chronic pathologies, revealing varying associations with each condition. This study reveals a high rate of (MDQ) positivity in systemic lupus erythematosus (SLE), associated with the risk of bipolar disorder in SLE. Notable discrepancies in MDQ positivity risk factors between SLE and bipolar disorder are observed. The study emphasizes the ability of MDQ to identify a distinct syndrome characterized by rhythm dysregulation, posing a risk for bipolar disorder and other disorders.

Meaningful body talk: Emotional experiences with music-based group interactions

Music-based group interaction (MGI) is a complex social phenomenon that is important for individuals' emotional experiences. However, research on emotion in tourism lacks a focus on group interaction integrating the mind and body. Guided by Damasio's neurocognitive-evolutionary theory, this study used an adapted go-along method at Midi Festivals to analyze festivalgoers' emotional experiences during MGI. Meanings of the body and its agency-related roles were captured between emotions, music, and group interaction. Results revealed three patterns of MGI—dissociative, reflective, and immersive—based on the extent of congruence between social and bodily rhythms. MGI allows participants to achieve a clear sense of self and shared belonging thanks to the unity between body and mind. The findings provide insights into contemplating emotions, the body, and group interaction within a musical context. Results suggest that music tourism holds value for enhancing individuals' emotion regulation and well-being, offering implications for practitioners in event management.

Cognitive predictors of response to interpersonal and social rhythm therapy in mood disorders.

There has been increasing interest in examining the potential moderating effects that cognitive functioning has on treatment outcome in bipolar disorder (BD) and major depressive disorder (MDD). Therefore, the aim of this exploratory study was to examine the relationship between baseline cognitive function and treatment outcome in individuals with mood disorders who completed 12 months of interpersonal and social rhythm therapy (IPSRT), and were randomised to receive adjunctive cognitive remediation (CR) or no additional intervention. Fifty-eight patients with mood disorders (BD, n = 36, MDD, n = 22), who were randomised to IPSRT-CR or IPSRT, underwent cognitive testing at baseline and completed follow-up mood measures after 12 months. General linear modelling was used to examine the relationship between baseline cognitive function (both objective and subjective) and change in mood symptom burden, and functioning, from baseline to treatment-end. Poorer baseline attention/executive function was associated with less change in mood symptom burden, particularly depressive symptoms, at treatment-end. Additionally, slower psychomotor speed at baseline was associated with less improvement in mania symptom burden. Subjective cognitive function at baseline was not related to change in mood symptom burden at treatment-end, and neither objective nor subjective cognitive function was associated with functional outcome. Due to the exploratory nature of the study, there was no correction for multiple comparisons. Aspects of objective cognitive function were associated with treatment outcomes following psychotherapy. Further large-scale research is required to examine the role that cognitive function may have in determining various aspects of mood disorder recovery.

Hyperactivity and Risk for Dysregulation of Mood, Energy, and Social Rhythms Syndrome (DYMERS): Standardization of a Simple One-Item Screener versus the Mood Disorder Questionnaire (MDQ).

Background: This study aims to verify the accuracy of item 10 on the energy level of the Short-Form Health Survey (SF-12) in an item screening according to Mood Disorder Questionnaire (MDQ) results, providing a measure of hyper-energy. Methods: Regression techniques were employed in a dataset comprising 4093 records of respondents to test both linear and nonlinear relationships between predictor and outcome variables (energy level and symptoms considered in the MDQ). We examined the relationship of energy level with cases identified using MDQ with a cut-off of 7. Results: Levels of energy, as rated on item 10 of the SF-12, were related to the MDQ score with sensitivity = 0.72 and specificity = 0.70. In linear regression, the associations were stronger with MDQ items on excessive energy or activity, showing a medium effect size and an explained variance of 10% or higher. A greater association was observed for items on excessive energy and activity, as expected, as well as for items concerning self-confidence, sociability, and talkativeness. Conclusions: This result may have implications for the research on risk factors and the pathogenesis of the dysregulation of mood, energy, and social rhythms syndrome (DYMERS), a syndrome that is hypothesized to occur in stressful conditions like those shown under the COVID-19 pandemic.

Social rhythm and implications on functionality of patients after stroke

ABSTRACT The study aimed to assess the regularity, intensity, frequency, and period of activities comprising social rhythm and associate them with the functionality of stroke patients. The sample consisted of 73 patients (41 men and 32 women) with a mean age of 60 years (±10). Social rhythm was assessed by Social Rhythm Metric (SRM) and Activity Level Index (ALI). The functionality was evaluated using the International Classification of Functioning, Disability, and Health (ICF). Data were analyzed using Student’s t-test, ANOVA, and Chi-square test. The mean SRM was 5.1 ± 0.9, and ALI was 58.3 ± 14.9. Notably, 40% of the patients exhibited both low regularity and low intensity of activities. Six SRM activities, performed with low frequency (going outside, starting work, exercising, snacking, watching other TV programs, and going home), exhibited a tendency to have periods that deviated from the expected 24-hour daily cycle. ICF domains most associated with SRM were: d2-General tasks and demands, d3-Communication, d4-Mobility, d5-Self care, d8-Major life areas, and d9-Community, social and civic life. The results indicated changes in social rhythm with implications for patient functionality. Screening for disruptions in social rhythm could be part of the functional assessment during the rehabilitation process for post-stroke patients.

Improving Social and Personal Rhythm Dysregulation in Young and Old Adults with Bipolar Disorder: Post-Hoc Analysis of a Feasibility Randomized Controlled Trial Using Virtual Reality-Based Intervention.

Introduction: Rehabilitative interventions employing technology play a crucial role in bipolar disorder (BD) treatment. The study aims to appraise the virtual reality (VR)-based cognitive remediation (CR) and the interpersonal rhythm approaches to treatment outcomes of BD across different age groups. Methods: Post-hoc analysis of a 12-week randomizedcontrolled cross-over feasibility trial involving people with mood disorders (BD, DSM-IV) aged 18-75 years old: thirty-nine exposed to the experimental VR-based CR vs 25 waiting list controls. People with BD relapse, epilepsy or severe eye diseases (due to the potential VR risks exposure) were excluded. Biological Rhythms Interview of Assessment in Neuropsychiatry (BRIAN) was used to measure the outcome. Results: Cases and controls did not statistically significantly differ in age and sex distributions. Personal rhythm scores improved over the study follow-up in the experimental vs the control group (APC = 8.7%; F = 111.9; p < 0.0001), both in young (18-45 years) (APC = 5.5%; F = 70.46; p < 0.0001) and, to a lesser extent, older (>46 years) adults (APC = 10.5%; F = 12.110; p = 0.002). Conclusions: This study observed improved synchronization of personal and social rhythms in individuals with BD after a virtual reality cognitive remediation intervention, particularly in social activity, daily activities, and chronotype, with greater benefits in the younger population.

An e-Health Psychoeducation Program for Managing the Mental Health of People with Bipolar Disorder during the COVID-19 Pandemic: A Randomized Controlled Study.

Background: Social rhythm dysregulation has been identified as a determining factor in bipolar disorder (BD) relapses. It directly impacts individuals' quality of life (QoL). This study aims to present preliminary data on the efficacy of an e-health psychoeducational intervention for BD for improving clinical outcomes. Methods: This study used an open-label, crossover, randomized controlled trial design. The inclusion criteria consisted of a BD diagnosis, affiliation with the Consultation Psychiatry and Psychosomatic Center at the University Hospital in Cagliari, Italy, age over 18, and the obtaining of informed consent. Anxiety and depressive symptoms, QoL, and social and biological rhythms were measured using standardized instruments validated in Italian. Results: A total of 36 individuals were included in the experimental group (EG) and 18 in the control group (CG). The final sample consisted of 25 in the EG and 14 in the CG. A statistically significant improvement in QoL was found in the EG post-treatment (p = 0.011). Significant correlations were found between QoL and the dysregulation of biorhythms in the EG at T0 (p = 0.0048) and T1 (p = 0.0014). Conclusions: This study shows that, during extreme distress, an e-health group psychoeducation intervention for people with BD could significantly improve the perception of QoL. The results must be confirmed by studies conducted with larger-sized samples.

Comparing Human-Smartphone Interactions and Actigraphy Measurements for Circadian Rhythm Stability and Adiposity: Algorithm Development and Validation Study.

This study aimed to investigate the relationships between adiposity and circadian rhythm and compare the measurement of circadian rhythm using both actigraphy and a smartphone app that tracks human-smartphone interactions. We hypothesized that the app-based measurement may provide more comprehensive information, including light-sensitive melatonin secretion and social rhythm, and have stronger correlations with adiposity indicators. We enrolled a total of 78 participants (mean age 41.5, SD 9.9 years; 46/78, 59% women) from both an obesity outpatient clinic and a workplace health promotion program. All participants (n=29 with obesity, n=16 overweight, and n=33 controls) were required to wear a wrist actigraphy device and install the Rhythm app for a minimum of 4 weeks, contributing to a total of 2182 person-days of data collection. The Rhythm app estimates sleep and circadian rhythm indicators by tracking human-smartphone interactions, which correspond to actigraphy. We examined the correlations between adiposity indices and sleep and circadian rhythm indicators, including sleep time, chronotype, and regularity of circadian rhythm, while controlling for physical activity level, age, and gender. Sleep onset and wake time measurements did not differ significantly between the app and actigraphy; however, wake after sleep onset was longer (13.5, SD 19.5 minutes) with the app, resulting in a longer actigraphy-measured total sleep time (TST) of 20.2 (SD 66.7) minutes. The obesity group had a significantly longer TST with both methods. App-measured circadian rhythm indicators were significantly lower than their actigraphy-measured counterparts. The obesity group had significantly lower interdaily stability (IS) than the control group with both methods. The multivariable-adjusted model revealed a negative correlation between BMI and app-measured IS (P=.007). Body fat percentage (BF%) and visceral adipose tissue area (VAT) showed significant correlations with both app-measured IS and actigraphy-measured IS. The app-measured midpoint of sleep showed a positive correlation with both BF% and VAT. Actigraphy-measured TST exhibited a positive correlation with BMI, VAT, and BF%, while no significant correlation was found between app-measured TST and either BMI, VAT, or BF%. Our findings suggest that IS is strongly correlated with various adiposity indicators. Further exploration of the role of circadian rhythm, particularly measured through human-smartphone interactions, in obesity prevention could be warranted.

Adjuvant Psychotherapies to Prevent Relapse in Bipolar Disorder

Several psychotherapy protocols have been evaluated as adjuncts to pharmacotherapy for patients with bipolar disorder (BD). Little is known about their comparative effectiveness. To compare the effectiveness of 2 types of group psychotherapy, skill-oriented, material-based cognitive behavioral therapy (SEKT) and supportive, patient-centered, emotion-focused therapy (FEST), to prevent relapse in patients with euthymic BD. This was a large, observer-blind, randomized clinical trial conducted over 18 months (posttreatment after 6 months; follow-up at 12 and 18 months). In addition to psychiatric care as usual (including mood-stabilizing medication), each participant at 9 clinical outpatient units in Germany received 24 hours of group psychotherapy over 4, full-day sessions spread over 5 months. Patients with euthymic BD type 1 (BD 1) or BD type 2 (BD 2) between the ages of 18 and 50 years were randomly assigned to 1 of 2 forms of psychotherapy, SEKT or FEST. Independent clinicians blinded to patient grouping performed assessments using structured interviews (Structured Clinical Interview for DSM Disorders and Longitudinal Interval Follow-Up Evaluation) and self-rating and clinician rating for inclusion criteria and outcome. Kaplan-Meier survival curves were calculated for time to relapse. Cox proportional hazards statistics and propensity score matching were calculated for the multivariate analysis. Study data were analyzed from March 2020 to September 2022. SEKT intervention is a structured cognitive behavioral therapy integrating elements of interpersonal social rhythm therapy, and of mindfulness-based cognitive therapy. FEST psychotherapy has its roots in emotion-focused, supportive, and nondirective therapy. Recurrence of a new affective episode assessed by blinded interviewer with the LIFE interview. In addition, self-rating and clinician rating of depressive and mania symptoms as well as level of social functioning were assessed. Of 348 screened referrals, 305 patients (median [IQR] age, 34 [18-50] years; 162 male [53%]) with euthymic BD 1 or BD 2 were included in the study. A total of 207 patients (68%) had BD 1, 98 (32%) had BD 2, and 278 (91%) received psychiatric care. Both therapies were equally effective in preventing recurrence of a new episode. Outcome (higher rate of new episodes) was not predicted by kind of treatment (SEKT: 69 [49%] relapse; FEST: 63 [46%] relapse) but was predicted by BD 2, comorbidity, attending all sessions, and the interaction of type of treatment by BD 1 or 2. Patients with BD 2 had the highest rate of relapse (60 [61%] relapse), in particular, when treated by SEKT (39 [70%] relapse). Results of this randomized clinical trial revealed that a structured, skill-oriented, material-based cognitive behavioral therapy (SEKT) and a supportive, patient-centered, emotion-focused therapy (FEST) were equally effective in preventing relapse of affective episodes when delivered in a new, intensive group format. Additionally, there were baseline factors, in particular BD 2, that influenced outcomes. ClinicalTrials.gov Identifier: NCT02506322.

Moderating effect of shift work on sleep and depression in individuals at high risk of bipolar disorder

BackgroundSocial Zeitgeber Theory posits that disruptions in social rhythms can increase susceptibility to bipolar disorder (BD). Shift work (SW) is one of the external factors that cause instability in social rhythms and the sleep-wake cycle. This study evaluated the moderating influences of SW on the risks of BD and sleep-related parameters and depressive symptoms. Furthermore, we evaluated the specific work schedules including daytime, nighttime, and regular and irregular rotating SW. MethodsAn online survey was administered to 6665 participants, with 3379 (50.7 %) classified as individuals with high scores of Mood Disorder Questionnaire (MDQ). The survey included the Pittsburgh Sleep Quality Index (PSQI), Insomnia Severity Scale (ISI), Epworth Sleepiness Scale (ESS), and Center for Epidemiologic Studies Depression Scale (CES-D). ResultsA multivariate regression model revealed significant interactive effects of MDQ positivity and SW on PSQI, ISI, and CES-D scores, but not ESS scores. In a secondary analysis of the high MDQ screen group, daytime workers had lower scores in sleep disturbances and depressive symptoms compared to those engaged in other forms of SW. LimitationsOnline surveys were accessible voluntarily, leading to potential selection bias. Cross-sectional data identified associations, not causal relationships. Only a self-reported questionnaire was used. ConclusionsOur findings emphasize the advantages of a daytime work schedule for individuals at high risk of BD. In accordance with the principles of social rhythm interpersonal therapy, sleep interventions for individuals at high risk of BD should include the maintenance of a consistent daytime schedule.

Sex differences in the association between social jetlag and hazardous alcohol consumption in Korean workers: A nationwide cross-sectional study

BackgroundSocial jetlag, the misalignment between biological and social rhythms, can lead to adverse health outcomes. This study explored the association between social jetlag and hazardous alcohol consumption, as well as the sex differences in this association. MethodsThis study included a nationally representative sample of Korean workers consisting of 11,462 individuals (5479 women). Social jetlag was calculated as the difference in the mid-point between sleep onset and offset on free days and workdays. Hazardous alcohol consumption was determined using the Alcohol Use Disorder Identification Test–Consumption (range 0–12), with a cutoff of ≥6 for men, ≥5 for women, and ≥3 for those aged ≥65. Logistic regression analysis was used to estimate the odds ratios (ORs) and 95 % confidence intervals (CIs). ResultsAmong men, 599 out of 5983 individuals (10.0 %) had ≥120 min of social jetlag. Among women, 550 out of 5479 individuals (10.0 %) had ≥120 min of social jetlag. The prevalence of hazardous alcohol use was 56.2 % for men and 27.3 % for women. In the regression analysis, there was a significant sex interaction, where social jetlag ≥120 min was associated with hazardous alcohol consumption in female workers (OR: 1.52, 95 % CI: 1.18–1.96), but not in male workers (OR: 1.04, 95 % CI: 0.84–1.29). ConclusionHigh social jetlag was associated with an increased likelihood of hazardous alcohol consumption among women. Our findings underscore the importance of considering sex differences in future research and policy interventions regarding social jetlag and its associated behavior outcomes.

Pacemaker effects on online social rhythms on a social network

The dynamics of coupled oscillators in a network are a significant topic in complex systems science. People with daily social rhythms interact through social networks in everyday life. This can be considered as a coupled oscillator in social networks, which is also true in online society (online social rhythms). Controlling online social rhythms can contribute to healthy daily rhythms and mental health. We consider controlling online social rhythms by introducing periodic forcing (pacemakers). However, theoretical studies predict that pacemaker effects do not spread widely across mutually connected networks such as social networks. We aimed to investigate the characteristics of the online social rhythms with pacemakers on an empirical online social network. Therefore, we conducted an intervention experiment on the online social rhythms of hundreds of players (participants who were pacemakers) using an avatar communication application (N = 416). We found that the intervention had little effect on neighbors’ online social rhythms. This may be because mutual entrainment stabilizes the neighbors’ and their friends’ rhythms. That is, their online social rhythms were stable despite the disturbances. However, the intervention affected on neighbors’ rhythms when a participant and their neighbor shared many friends. This suggests that interventions to densely connected player groups may make their and their friends’ rhythms better. We discuss the utilization of these properties to improve healthy online social rhythms.

Effectiveness of Evidence-Based Psychosocial Interventions on Recurrence of Symptoms in Adolescents with Bipolar Spectrum Disorders: A Systematic Review Study

Introduction: Considering the problems of emotion regulation and social skills in adolescents with bipolar spectrum disorders, one of the methods that can help these adolescents is psychosocial intervention. Therefore, the aim of the present study was to investigate the effectiveness of evidence-based psychosocial interventions on the recurrence of symptoms in adolescents with bipolar spectrum disorders. Methods: In the present study, keywords like psychosocial intervention, recurrence, bipolar disorder, bipolar and related disorders, and adolescence were selected based on the database of medical subject headings (MeSH) and searched on English databases such as Scopus, PsycINFO, PubMed, Web of Science, and Google Scholar in the period of 2008 (from March) to 2023 (until December). In this study, the PRISMA systematic review study reporting guide was used. Results: The results of the conducted research indicated the existence of problems in the sleep schedule, emotion regulation, social functioning, and problem-solving skills of these adolescents. Although drug interventions were the front line of mania treatment, psychosocial interventions using models such as psychoeducation, cognitive-behavioral therapy focused on children and families, dialectical behavior therapy, and interpersonal as well as social rhythm therapy has helped the process of treatment stability and effectively prevent the symptoms of the disorder from returning. Conclusion: Early psychosocial treatment, along with pharmacotherapy intervention, can reduce the negative impact of symptoms and lead to improved short-term and long-term outcomes by equipping adolescents and their families with knowledge and skills to improve understanding and management of the disorder.