Sleeping Beauty? A Prospective Study on the Prevalence of Sleep Problems and Their Potential Determinants in Professional Dancers.

Background: Sleep is important for health and performance but has rarely been studied in professional dancers. The aim was to analyse the prevalence of sleep problems in professional dancers and their potential determinants at the beginning of and during the season.

Methods: Professional dancers of six German companies answered a comprehensive baseline questionnaire on physical and mental health, including the Sleep Difficulty Score of the Athletic Sleep Screening questionnaire (ASSQ-SDS) in the beginning of the season and weekly health reports during the season.

Discovery of Potent Kappa Opioid Receptor Agonists Derived from Akuammicine.

Akuammicine (), an alkaloid isolated from , is an agonist of the kappa opioid receptor (κOR). To establish structure-activity relationships (SARs) for this structurally unique κOR ligand, a collection of semisynthetic derivatives was synthesized. Evaluating these derivatives for their ability to activate the κOR and mu opioid receptor (μOR) revealed key SAR trends and identified derivatives with enhanced κOR potency.

Self-reported Health Problems of Professional Dancers from Five German Opera Houses or State Theatres: A Prospective Study with Weekly Follow-ups during One Season.

Background: Most studies on injuries of professional dancers used a medical-attention and/or time-loss definition and did not analyse all health problems. Further, almost all studies included just one company. The aim was to analyse all self-reported health problems of professional ballet and contemporary dancers during one season and compare sexes and five companies in Germany.

Correction: Chisholm et al. Frontline and Relapsed Rhabdomyosarcoma (FaR-RMS) Clinical Trial: A Report from the European Paediatric Soft Tissue Sarcoma Study Group (EpSSG). 2024, , 998.

The authors wish to make corrections to the authorship and title of [...