Child 1 Childhood 1 Cognition 1 Event-related potential 1 Evoked Potentials 1 Gymnastics 1 Humans 1 Memory, Short-Term 1 Motor skill Physical activity 1 Up-Regulation 1 article 1 child 1 childhood 1 clinical article 1 cognition 1 contingent negative variation 1 controlled study 1 evoked response 1 female 1 human 1 male 1 motor performance 1 physical activity 1 physical education 1 pretest posttest design 1 school child 1 short term memory 1 upregulation 1 working memory 1