bluuebunny/crossref_metadata_2025_split huggingface dataset:
P013 Healthy from the start: using participatory co-design as a novel approach for developing health resources for young shiftworkers
Authors: Shriane A , Ferguson S , Gupta C , Hilditch C , Kolbe-Alexander T , Marino J , Paterson J , Rigney G , Sprajcer M , Stanton R , Thomas M , Vincent G 
Published: December 2024

Abstract
Young adults are increasingly joining shiftwork professions, exposing them to elevated health risks. To mitigate these risks, tailored, evidence-based resources on health areas most affected by shiftwork - sleep, nutrition, and physical activity – are essential. To ensure such resources are tailored and engaging, lived experience must be embedded in their design. To date, such participatory, co-design approaches are yet to be implemented in resource development for shiftworkers.
A participatory approach engaged co-designers (young, experienced, and former shiftworkers, workplace health and safety specialists, science communicators, and academic experts) in a series of online workshops and surveys, aiming to create sleep, nutrition, and physical activity resources for young shiftworkers. Following resource development, co-designers assessed their participation and the resulting resources through an online questionnaire, which included the Public and Patient Engagement Evaluation Tool (PPEET).
Co-designers (n=48) successfully participated in the development of sleep, nutrition, and physical activity resources for young shiftworkers. Co-designers evaluated the participatory approach positively, with a mean rating across all PPEET items of &gt;4.8 on a 5-point Likert scale, also providing positive ratings for the resources, with the majority (91.9%) either agreeing or strongly agreeing that they were user-friendly, valuable, and informative for young shiftworkers, serving as a credible source of health information.
By adopting a novel participatory approach, we successfully co-designed sleep, nutrition, and physical activity resources for young shiftworkers. Participatory approaches, including co-design, should be considered when developing health interventions for shiftworkers, given their unique lifestyle challenges and the value of embedding lived experience.
P015 Sleep hygiene and sleep health of mining shift workers in Australia
Authors: Beranek P , Dunican I , Cruickshank T , Turner M 
Published: December 2024

Abstract

Introduction
The Australian mining industry operates 24/7/365 days per year, with operations often located in remote areas. This requires fly-in, fly-out (FIFO) shift workers to follow a roster-based work schedule and reside in camp accommodations between consecutive shifts. Initial research reported sleep difficulties in this population. This study evaluated sleep hygiene and sleep health and their respective relationships in FIFO shift workers in the mining industry in Australia.

Methods
Employing a cross-sectional study design, an online survey was disseminated between June 2023 and February 2024. Sleep hygiene was assessed using the Sleep Hygiene Index and sleep health was assessed using the Sleep Health Index. The sample comprised 488 respondents (139 females, average age: 39±12 years, average BMI: 28±5 kg/m2).

Results
Findings revealed average scores of 30±7 for the Sleep Hygiene Index and 73±16 for the Sleep Health Index. Better sleep hygiene was associated with better sleep health (β=-0.52, se=0.10, [-0.72, -0.33], p&lt;0.05). Differences in Sleep Health Index scores were found between engagement frequencies for sleep hygiene practices related to sleep regularity, sleep environment, mental health, and time in bed (p&lt;0.05 for all). No differences in Sleep Health Index scores were found between engagement frequencies for sleep hygiene practices related to substance consumption and exercise close to bedtime (p≥0.05 for all).

Discussion
This study suggests that shift workers in the mining industry may improve their sleep health by improving their sleep hygiene. Specifically, greater emphasis should be placed on improving sleep regularity, sleep environment, mental health, and time in bed.
P017 Relationships between daily step count and sleep in over 30 million person-days of real-world longitudinal monitoring data
Authors: Fitton J , Nguyen P , Lechat B , Scott H , Toson B , Manners J , Sansom K , Hudson A , Vakulin A , Naik G , Dunbar C , Catcheside P , Pinilla L , Eckert D 
Published: December 2024

Abstract
Given their importance for health and wellness, the relationship between sleep and physical activity has garnered considerable research attention. Previous studies have, however, often been limited by relatively small and geographically limited samples, reliance on self-report measures of sleep, and little longitudinal data. We aimed to expand upon previous research by exploring relationships between sleep and daily step count in a large global sample (N = 76,434).
Over 30 million person-days of sleep- and health-related monitoring data were collected through Withings’ consumer health-tracking devices from users in 250 regions worldwide. We used generalized additive models to investigate the relationship between daily step count with total sleep time (TST), sleep onset latency (SOL), and sleep efficiency (SE).
Linearly, a between-subject difference of 10,000 daily steps predicts reduced SOL (-2.72 95%CI ± 0.01 min) and TST (-11.72 ± 0.06 min), and increased SE (1.19 ± 0.01 %). Notably, our descriptive analysis showed that, on average, a very small proportion of users (5.1%) attained both the recommended 7-9 hours of sleep per night and ≥10,000 daily steps, whilst 17% of the sample lead sedentary lives (&lt;5,000 daily steps) and sleep less than 7 hours per night.
Findings highlight the interplay between sleep and daily step count in a large global sample, whilst also calling into question the compatibility of prominent sleep duration guidelines with physical activity recommendations. More research is needed to further investigate the temporal dynamics of the relationship between sleep and daily step count.
P019 No mythical effect of moon cycles on sleep
Authors: Nguyen P , Lechat B , Scott H , Vakulin A , Eckert D , Catcheside P 
Published: December 2024

Abstract

Introduction
The lunar cycle effects behaviours in invertebrates. In humans, lunar cycle effects on sleep have been reported, but with mixed and inconclusive findings. This study sought to leverage a very large longitudinal consumer device dataset to more definitively investigate potential moon cycle effects on human sleep.

Methods
We used sleep data recorded between March 2017 and September 2023 from two consumer devices, using location and date data to determine moon phase and total sleep time from all available data covering at least 80% of a moon cycle. One device was a pneumatic under-mattress bed sleep sensor with 124,544 users and 81 million nights of data. The other device was a wrist-worn sleep sensor with 232,576 users and 96 million nights of data. Both a Cosinor and Genearlized Additive Model (GAM) were used to test for moon phase effects on sleep.

Results
Univariate analysis using the Cosinor model showed no discernible moon effect, a poor model fit for over 99% of users (effect size &lt;0.33 hrs and R-squared &lt;0.25) and a random distribution of the cosine peak across the moon cycle. GAM adjusted for multiple confounders also showed no evidence of moon phase effects on total sleep time (effect size &lt;0.02 hrs). Multiple sensitivity analyses with different sleep related outcomes and model structures showed no evidence of moon phase effects on sleep.

Conclusions
Comprehensive analysis of two very large independent data sources of sleep time estimates do not support any moon cycle effects on total sleep time.
P020 Spinning sleep: Constructions of sleep in New Zealand’s online magazine texts
Authors: Gibson R , Breheny M , Thompson A , Signal L , Haami D , Dew K 
Published: December 2024

Abstract

Introduction
Approximately a third of adults report suboptimal sleep, however, medicalised approaches to sleep seldom align with the realities of ordinary life. Familial sleep arrangements and schedules of contemporary society influence sleep experiences. These experiences are also shaped by social and cultural beliefs concerning rest and production. Mainstream media presentation of sleep and the implications of sleeplessness provides a lens for interrogating the complex messages people receive regarding sleep and society.

Method
A thematic analysis was conducted on sleep-related content from The SPINOFF, New Zealand’s largest freely accessible online magazine source. A search of content containing the keyword “sleep*” (2014-2023) yielded 1,313 texts, 125 of which were deemed relevant for analysis.

Results
Sleep was constructed as vital for optimal functioning and happiness. This was explicit within texts concerning topics of “sleep and mental health” and “how to improve sleep”. Other texts supported this message implicitly using examples of the dangers of sleep disruption for health and wellbeing. These included accounts of sleep disorders; unsolicited changes to sleep through social schedules; and (overwhelmingly) experiences of sleeplessness during early parenthood. Unique juxtapositions were apparent between the jovial nature of texts that normalised sleep loss across the life course versus those that emphasised the severity of situations of chronic sleep loss.

Discussion
Moving between the comedic and tragic accounts of sleep loss, sleep disruption was constructed as both ordinary and serious. These constructions of sleep inform adjunct research concerning audience receptions to sleep-related messaging and their influence on beliefs and practices.
P022 How well are we communicating the complications of adenotonsillectomy in children for sleep disordered breathing – a longitudinal analysis of medical information on the internet in Australia.
Authors: Coussens S , Theodoulou E 
Published: December 2024

Abstract

Introduction
Sleep-disordered breathing is a prevalent sleep disorder among children, Adenotonsillectomy is the usual treatment. However, this procedure carries potential complications, including pain and various morbidities and even death. As the internet increasingly serves as the primary source of medical information, it is crucial to have quality information, that is consistent with current literature and at an appropriate readability available for parents and patients.

Methods
The study employed a three-point longitudinal study (2018, 2020 and 2023) mixed analysis, utilizing NVivo 12 software, to assess the quality, consistency, and readability of website text data. Various metrics were used, including the Flesch-Kincaid reading ease score, Flesch-Kincaid grade level, amongst others and the DISCERN Tool for evaluating quality. Website information was compared to known complications to determine the consistency which these potential issues are addressed.

Results
Quality: The 2020 average quality score of 2 of 4 indicated average quality, The 2018 quality was not measured, and the 2023 quality measure will be presented at the conference but is yet to be performed.

Consistency
Most sites mentioned common complications like bleeding and pain but mostly failed to discuss rarer complications across all 3 time points.

Readability
The readability for 2018 was 53.11 and 2023 was 53.36 for the Flesch-Kincaid reading ease score indicating content was “fairly difficult to read” across time points.

Discussion
This study demonstrates website information concerning the potential complications of adentonsillectomy could be improved with only average quality, low consistency and low readability over the preceding 6 years.
P025 If a human falls asleep in water do they sleep with half their brain like a dolphin?
Authors: Cho G , Nelson A , D’Rozario A , Marshall N 
Published: December 2024

Abstract

Aims
Dolphins sleep one half of their brain at a time presumably to avoid drowning – called unihemispheric slow wave sleep. The Northern Fur Seal has been reported to do this whilst in the water but sleep bihemispherically when it is terrestrial. These observations made us wonder whether unihemispheric slow wave might be an evolutionarily conserved ability in humans that might be revealed if we simply slept in water.

Methods
We built a waterproof and temperature regulated housing to protect an EEG recorder (Alice PDX, Respironics) from being near a float tank (AKA floatation REST therapy) with very low level light and sound levels and thermoneutral temperature. Float therapy uses a highly concentrated Epsom salt solution making the human body extremely buoyant. Reports of single channel automatically processed EEG being measured in float tanks convinced us we could try to find unihemispheric slow wave in a human sleeping in water. Active EEG placements were recorded at Fp1 and Fp2 both referenced to Fpz on the forehead. Left and right electrooculogram (EOG) was also recorded referenced to Fpz. EEG was scored using Alice G3 Sleepware 3.9.5 (Philips Respironics Pittsburgh, USA) following the scoring manual American academy of sleep medicine. A single male human with previous float tank experience was recorded in the float tank in the morning (1 hour).

Results
We captured scorable EEG and detected stage 2 sleep characteristic K complexes and sleep spindles. At no point did we detect slow wave sleep or uni-hemispheric sleep. Slow waves around sleep onset are artifactual slow rolling eye movements being detected in these frontal channels.

Discussion
It is possible to record EEG and score human sleeping in water. We saw no asymmetry in the stage 2 sleep but captured no SWS to compare to see whether humans sleep like dolphins in water.
P026 Obstructive sleep apnoea as a risk factor for Alzheimer’s Disease pathogenesis: a literature review and proposal of a novel model of neuropathological pathways
Authors: Rawson G , Pase M , Howard M , Jackson M 
Published: December 2024

Abstract

Background
Obstructive sleep apnoea (OSA) is a common sleep disorder that has been associated with an increased risk of Alzheimer’s disease (AD). Potential mechanistic pathways in this relationship include hypertension and oxidative stress (the imbalance of antioxidants and reactive oxygen species incurred by hypoxemia). Recently, the role of sleep microarchitecture has been investigated both as a consequence of OSA, and as a potential contributor to AD pathogenesis.

Aims
The aim of this literature review is to integrate findings pertaining to OSA as a potential risk factor for AD pathogenesis. The mechanisms of interest are hypertension, oxidative stress, and sleep microarchitecture. A secondary aim of this review is to develop a model that illustrates the theorised mechanistic pathways (hypertension, oxidative stress, and sleep microarchitecture) concurrently.

Methods
A search of databases between 2004 and 2024 including PubMed, Oxford Academic, and SpringerLink, with key terms amyloid burden, OSA, hypertension, slow wave sleep, and microarchitecture.

Results & Discussion
Common consequences associated with OSA, such as hypertension, oxidative stress, and abnormal sleep microarchitecture, are potential risk factors for AD pathogenesis. The exact nature of the interplay between these mechanisms is not fully understood but highlights the need for further research. The new model presented in this review illustrates how the three pathways of interest may contribute to AD neuropathology. The model identifies areas of possible interactions where the cumulative effect of the potential pathogenic pathways may, metaphorically, be more than the sum of its parts.
P027 Dream characteristics are sex-specific in REM Sleep Behaviour Disorder and healthy older adults
Authors: Bramich S , Noyce A , Pérez-Carbonell L , Bindoff A , Wang X , King A , Naismith S , Vickers J , Alty J 
Published: December 2024

Abstract

Introduction
REM sleep behaviour disorder (RBD) is strongly associated with neurodegenerative disease (NDD), and the isolated form is a known prodrome of several alpha-synuclein-related NDD’s. RBD is difficult to diagnose, and screening questionnaires focus on vivid and aggressive dream content, but these characteristics may be more common to males, leading to underdiagnosis of RBD in females. It is important to explore dream characteristics in males and females to improve screening methods and identify RBD early in its trajectory to NDD.

Method
Adults aged 50+ years were recruited from the community to complete the REM Sleep Behaviour Disorder Single-Question Screen (RBD1Q; to identify pRBD) and the Mannheim Dream Questionnaire (MADRE). The MADRE includes 20 questions enquiring about different characteristics of dreaming, such as dream recall, emotional intensity, and frequency of nightmares.

Results
1,809 participants completed the RBD1Q and MADRE, and 129 (7.1%) screened positive for pRBD (mean (SD) age 62 (7.7) years; 58% female). In the pRBD group, females reported more nightmares related to waking-life experiences than males. The pRBD group recalled dreams more often, experienced more lucid dreams and more nightmares during childhood compared to non-pRBD controls. In the control group, females reported more negative emotional tone to their dreams, had a stronger interest in dreams and attributed more meaning to dreams, than males

Discussion
This study found sex-specific differences in dream characteristics in pRBD and controls. This is relevant to RBD screening questionnaires as questions on nightmares related to waking life may aid identification of females with pRBD.
P028 Sleep depth and wake propensity measured with the Odds-Ratio Product (ORP) in a shift work protocol comparing two lighting interventions
Authors: Stuart N , Manners J , Guyett A , Nguyen P , Younes M , Gerardy B , Kemps E , Scott H , Catcheside P 
Published: December 2024

Abstract
ORP is a continuous metric of sleep depth and wake propensity, which distinguishes different levels of sleep depth within the same conventional sleep stage. Circadian-informed lighting may improve sleep depth compared to regular, dim lighting. Previous analyses found that circadian-informed lighting extended N2 sleep compared to standard lighting. The present study used ORP to further elucidate sleep effects under different lighting during shift work.
Nineteen healthy sleepers (12 males, mean±SD 29±10yrs) underwent two 8-day sessions (circadian-informed versus standard lighting). During days 3-7, participants transitioned to night work, sleeping from 10:00–19:00. ORP was calculated using C3 and C4 electrodes in 3-sec epochs. Values ranged from 0 (very deep sleep) to 2.5 (full wakefulness). Main outcomes included average ORP and ORP post-arousals (ORP-9), with lower ORP-9 suggesting rapid return to deep sleep.
Linear mixed models demonstrated a significant main effect of day on average ORP in N3 (F (4, 143.13) = 2.64, p=.037). Pairwise comparisons showed a significant increase in average ORP in N3 from day 2 to day 5 (p=.028), implying a lighter sleep in both lighting conditions as the study progressed. Two significant two-way interactions (condition*day) on average ORP-9 measured on the right hemisphere (F (4,125.35) = 3.31, p=.013) and on average ORP in wake (F (4,149.43) = 2.46, p=.048) were found; however, pairwise comparisons were not significant.
Our results indicate that the increase in sleep duration with circadian-informed lighting is not associated with changes in sleep depth. Results suggest that sleep changes with circadian informed lighting are complex.
P033 Validation of GENEActiv actimeters and Cicada Actigraphy Suite in a clinical sleep laboratory setting.
Authors: Wilson C , Rees M , Kee K , Stonehouse J , Perkins A 
Published: December 2024

Abstract

Introduction
The use of Actigraphy in clinical settings is an established approach, with the American Academy of Sleep Medicine (AASM) describing actigraphy as a suggested aid in the diagnosis of multiple sleep disorders such as delayed sleep phase syndrome, narcolepsy and insomnia.

Aim
The purpose of this study was to review the validity of the GENEActiv accelerometer (Activinsights, Kimbolton, UK) and Cicada Actigraphy Suite (Rick Wassing) in the setting of clinical practice and to optimise settings to align with gold-standard PSG.

Methods
Actigraphy data of 60 patients using GENEActiv were reviewed against concurrent overnight PSGs. Actiwatch data was compared to PSG metrics of Total Sleep Time (TST), Sleep Efficiency (SE), Sleep Latency (SL) and WASO. Using the open-source GGIR algorithm, the default Cicada 5-Sec epoch was measured against a 30-Sec epoch length comparable with PSG.

Results
For both epoch durations and following Boneferroni correction (α=0.016), TST and SE were shown to be significantly over-calculated while SL was under-calculated compared to PSG. When comparing epoch lengths WASO times were closer to PSG values when set to 5-second epochs (p&gt;0.016). No other values were shown to be significantly different between the epoch lengths.

Conclusion
The results demonstrate that when compared to PSG, GENEactiv/Cicada settings markedly overestimate TST and SE and greatly underrepresent SL.
While Actigraphy remains a beneficial aid in assisting diagnosis of sleep disorders, clear discrepancies are evident when compared to gold standard PSG. Appropriate clinical correlation should be encouraged when utilising GENEactiv & Cicada actigraphy in a clinical setting.
P034 Noxturnal cRIP: An alternative to AASM recommended flow sensors in analysis of respiratory events in polysomnography
Authors: Eriksson N , Burr L 
Published: December 2024

Abstract

Introduction
AASM recommends the use of nasal pressure (NP), oronasal thermal flow (Th), and respiratory inductance plethysmography (RIP) for detecting and characterising respiratory events (RE) in polysomnography. A previous comparative study assessed utility of Noxturnal RIP flow (cRIPflow) as an alternative to Th for identification of RE in polysomnography. This demonstrated that cRIPflow was comparable with AASM recommendation for Th and NP (TH-NP) and indicated higher accuracy than Th in RE identification. We further investigate utility of cRIPflow between varying groups of apnoea hypopnoea index (AHI) severity.

Method
Respiratory scoring was performed by an experienced scorer on 10 diagnostic studies under AASM standards. Scoring was repeated using three different measurements for each study: cRIPflow only, Th only and Th-NP. AHI, central apnoea index (CAI), obstructive apnoea index (OAI), mixed apnoea index (MAI) and hypopnoea index (HI) were calculated. Data was catagorised into Group1 (AHI &lt;30/hr) and Group2 (AHI &gt;30/hr). Wilcoxon matched pairs test was utilised for comparison between flow measurements.

Results
Statistical difference found in Group1 (n=6) HI comparing cRIPflow vsTh (cRIPflow 6.08/hr+/-5.87SD, Th 4.57/hr+/-4.27SD, p=0.0312). No other statistical differences in RE identified when comparing cRIPflow vsTh, cRIPflow vs Th-NP and Th vs Th-NP within Group1 (n=6) and Group2 (n=4).

Discussion
This data suggests cRIPflow may be more sensitive in HI identification in lower severity AHI populations. Analysis with larger sample size would provide more insight. cRIPflow is comparative with AASM recommended flow sensors across varying AHI severity populations, suggesting an alternative method for detecting and characterising RE in polysomnography.