Sleep Medicine

Professional male rugby players commonly have objectively short, inefficient sleep despite good sleep knowledge.

In 22 professional male rugby league athletes monitored for seven nights, mean sleep duration was 355 minutes with sleep efficiency 73%. Subjective sleep reports overestimated sleep compared with actigraphy and showed only small correlations with objective measures. No association appeared between measured sleep behaviors and sleep knowledge scores. Conclusion: education alone may be insufficient; target behavioral determinants and in-bed activities to improve sleep. 1

Higher racism-related vigilance associates with poorer sleep quality and shorter duration in Black adults.

In a community cohort of 258 adults racialized as Black (mean age 56), greater racism-related vigilance correlated with worse sleep quality on a modified PSQI. Higher vigilance also associated with shorter sleep duration across ages and in both sexes. The authors suggest reducing anticipatory stressors as a potential intervention to improve sleep. 2

Higher inpatient melatonin dose linked to lower delirium odds; evening timing linked to higher delirium and longer LOS.

Health-system data from 83,760 inpatients showed each milligram higher average daily melatonin associated with lower delirium odds (OR 0.92, p<0.001). Melatonin administered between 5–8 pm was associated with higher odds of delirium (OR 1.55, p<0.001) and longer length of stay (+5.26 days). These are associative findings from observational data with multiple covariates, not randomized evidence of causation. 3