The relationship between motor proficiency and pedometer-determined physical activity in young children - Kambas, Antonis; Michalopoulou, Maria; Fatouros, Ioannis G; Christoforidis, Christos; Manthou, Eirini; Giannakidou, Dimitra; Venetsanou, Fotini; Haberer, Elke; Chatzinikolaou, Athanassios; Gourgoulis, Vassilios (Pediatric exercise science, 2012)