Effectiveness of physical education to promote motor competence in primary school childrenEFFECTS OF DEVELOPMENTAL GYMNASTICS ON MOTOR FITNESS IN PRESCHOOL GIRLSNeuromuscular and Torque Kinetic Changes After 10 Months of Explosive Sport Training in Prepubertal GymnastsPsychological Testing, Physical Examination and Fitness Testing of Primary-School Students for Participation in Gymnastic ActivitiesThe Impact of Gymnastics on Children’s Physical Self-Concept and Movement Skill Development in Primary Schools