Is serum prostate-specific antigen level affected by fasting and nonfasting?
According to our results, blood samples can be obtained for serum PSA measurement at any time of the day, regardless of whether the patient has fasted or not.
The decline in physical activity over a 1-year period during adolescence is not associated with a change in mental health. Further studies in adolescents aiming to investigate whether a change in physical activity is associated with a change in mental health should control for baseline levels of mental health and academic year differences.