Moderate-to-vigorous physical activity modulates the association between serum 25-hydroxyvitamin D and bone stiffness in European children and adolescents.

It remains unclear how serum 25-hydroxyvitamin D (25(OH)D) concentrations relate to childhood bone health. We hypothesized that 25(OH)D was inversely associated with bone turnover biomarkers and positively associated with bone stiffness. Cross-sectional analyses were performed using data from participants (2-15-year-old, 51% boys) from the Identification and Prevention of Dietary- and Lifestyle-induced Health Effects in Children and Infants Study (IDEFICS)/I.

Collaborative learning in older age and the role of familiarity: evidence from the map task.

As we age, learning new knowledge and skills becomes more difficult due to age-related changes to cognition. Learning collaboratively could counteract these changes, and perhaps more so when working with someone familiar. This study examined whether collaborative learning is affected by age and partner familiarity.

"We provide the methods to others but we don't use the methods ourselves": challenges with utilization of modern contraception among Female Healthcare Workers at two tertiary teaching hospitals, Northern Uganda.

Background: Female Healthcare Workers (FHCWs) play a crucial role in advocating for, delivering modern contraceptive methods (MCM) to reproductive-age women and potential users. Despite the high frequency of women seeking healthcare annually, less than half receive adequate contraceptive counseling and services. Investigating FHCWs' adherence to these practices and understanding the obstacles they encounter is essential.