The journal of Physical Activity in Children (PACH) is a semiannual, peer-reviewed publication dedicated to advancing interdisciplinary scholarship on physical activity, sport, and movement across pediatric and adolescent populations. Bridging the physiological, psychological, pedagogical, and epidemiological domains, the journal publishes original research, comprehensive reviews, and informed opinion pieces that examine physical activity both as a critical determinant of health and as a measurable health outcome. Its subject areas encompass Pediatric Exercise Science, Youth Sport Pedagogy, Motor Competence, Physical Activity Epidemiology, Developmental Kinesiology, and Sport and Exercise Psychology, reflecting a commitment to holistic inquiry. PACH particularly values investigations into behavioral, environmental, and educational strategies that enhance participation and performance, with a strong emphasis on translating empirical evidence into actionable practice for teaching, coaching, clinical intervention, and public policy. Guided by an international Editorial Board of subject-matter experts, the journal upholds a rigorous double-blind peer-review process to ensure the highest standards of scientific integrity and originality. By fostering global collaboration among scientists, educators, clinicians, and coaches, PACH aims to generate the evidence base necessary to optimize the developmental trajectories, health, and well-being of children and adolescents worldwide.