Difference in racket head trajectory and muscle activity between the standard volley and the drop volley in tennis.

Among tennis coaches and players, the standard volley and drop volley are considered basically similar, but muscles need to be relaxed (deactivation) just at the moment of impact when hitting the drop volley. However, this is not evidence-based. The aim of this study was to clarify racket head trajectory and muscle activity during the drop volley and to compare them with those of the standard volley.

[Bone mineral density in children with long-term antiepileptic therapy].

Introduction: Vitamin D active metabolites deficit that is al: tered by negative calcium and phosphorus balance is a potential complication during long-term antiepileptic drug therapy.

Objective: The aim of this study was to examine lumbar bone mineral density (BMD) in epileptic children receiving antiepileptic drug therapy longer than one year.

Methods: The examined sample consisted of 34 epileptic children, 18 male and 16 female, aged 6-12 (9.

Celiac disease prevalence in epileptic children from Serbia.

Celiac disease (CD) is a genetically determined autoimmune enteropathy, induced by gluten ingestion. To date, different prevalences of CD in children with epilepsy have been reported. The aim of this study was to determine CD prevalence in our patients with epilepsy, using anti-tissue transglutaminase (tTG) antibodies as a screening test.

[Solid papillary breast carcinoma with mucinous differentiation].

A case is reported of a solid variant of infiltrating papillary carcinoma of the breast with mucinous differentiation in a 74-year-old woman. Macroscopically, the tumor was solid and lobular, 4.5 cm in diameter.