Publications by authors named "P Catcheside"

Sleepiness-related errors are a leading cause of driving accidents, requiring drivers to effectively monitor sleepiness levels. However, there are inter-individual differences in driving performance after sleep loss, with some showing poor driving performance while others show minimal impairment. This research explored if there are differences in self-reported sleepiness and driving performance in healthy drivers who exhibited vulnerability or resistance to objective driving impairment following extended wakefulness.

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Background: Low-dose morphine may be prescribed to reduce chronic breathlessness in chronic obstructive pulmonary disease (COPD). Recent subjective findings suggest morphine may influence breathlessness through sleep-related mechanisms. However, concerns exist regarding opioid safety in COPD.

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Article Synopsis
  • The study investigates how changes in sleep posture relate to waking up and arousal, particularly examining if alarms that prevent sleeping on the back (supine) affect how long it takes to return to sleep.
  • Researchers collected sleep data from 37 participants using a device that tracks posture and sleep while testing the effectiveness of a supine-avoidance alarm in reducing back-sleeping during the night.
  • Findings showed that most posture changes occurred after waking or being briefly aroused, and while the alarm reduced time spent sleeping on the back, it didn’t significantly delay the ability to fall back asleep.
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Aims/hypothesis: Night-shift work causes circadian misalignment and impairs glucose metabolism. We hypothesise that food intake during night shifts may contribute to this phenomenon.

Methods: This open-label, multi-arm, single-site, parallel-group controlled trial involved a 6 day stay at the University of South Australia's sleep laboratory (Adelaide, SA, Australia).

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Article Synopsis
  • The study investigates the link between obstructive sleep apnea (OSA) and the development of type 2 diabetes mellitus (T2DM) over an 8.3-year period among men who were initially free of diabetes.
  • Out of 824 participants from the MAILES study, 52 (9.7%) were diagnosed with T2DM, and initial associations between OSA metrics and T2DM weakened after adjusting for factors like baseline glucose and testosterone levels.
  • Key findings include that individuals with lower mean oxygen saturation levels had a significantly higher risk of developing T2DM, while other metrics of sleep apnea showed no independent association once adjustments were made.
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