A comparison of objective and subjective measures of physical activity, sedentary and sleep behaviors between persons with and without depressive symptoms.

Background: Major Depressive Disorder (MDD) is characterized by negative recall biases, which may impact how individuals with depressive symptoms report physical activity (PA), sedentary, and sleep behaviors. Additionally, there are discrepancies between subjective and objective behaviors in MDD. Thus, the current study investigated whether individuals with depressive symptoms differ in their subjective and objective PA, sedentary, and sleep behaviors, and whether the magnitude of these discrepancies differ from those in individuals without depressive symptoms.

The effect of time from surgery to commencing adjuvant radiotherapy for patients with head and neck squamous cell carcinoma.

Introduction: Studies reported inferior outcomes when radiotherapy starts >6-8 weeks post-surgery for head and neck squamous cell carcinoma (HNSCC) but are limited due to time variable dichotomization. We assessed the relationship between survival and the time between surgery and radiotherapy as a continuous variable, hypothesising there would be no change in patients' survival at 6-8 weeks post-surgery.

Methods/materials: Inclusion criteria: patients with HNSCC who underwent surgery and adjuvant (chemo)radiotherapy, Jan 2014-Dec 2020.

Terrestrial evidence for volcanogenic sulfate-driven cooling event ~30 kyr before the Cretaceous-Paleogene mass extinction.

Alongside the Chicxulub meteorite impact, Deccan volcanism is considered a primary trigger for the Cretaceous-Paleogene (K-Pg) mass extinction. Models suggest that volcanic outgassing of carbon and sulfur-potent environmental stressors-drove global temperature change, but the relative timing, duration, and magnitude of such change remains uncertain. Here, we use the organic paleothermometer MBT' and the carbon-isotope composition of two K-Pg-spanning lignites from the western Unites States, to test models of volcanogenic air temperature change in the ~100 kyr before the mass extinction.

The prognostic significance of sarcopenia in patients treated with definitive radiotherapy: A systematic review.

Sarcopenia describes the degenerative loss of muscle mass and strength, and is emerging as a pan-cancer prognostic biomarker. It is linked with increased treatment toxicity, decreased survival and significant healthcare financial burden. Systematic analyses of sarcopenia studies have focused on outcomes in patients treated surgically or with systemic therapies.

Brief Report of a New Anatomical Region at Risk in Thoracic Radiotherapy: From Discovery to Implementation.

Increasing radiotherapy dose to select cardiac structures is associated with cardiac events and premature death. Previous studies have found a dose-response relationship for structures at the base of the heart. We have defined a new cardiac anatomical region at risk for radiotherapy by consensus opinion, based on image-based data-mining studies.