Procedure: This study will examine previously collected data (from birth to two years) that comprises the following: detailed motor assessments and structural and functional brain MRI images. At five years, preterm and term children will be examined using comprehensive motor assessments including the Movement Assessment Battery for Children - 2nd edition and measures of gait function through spatiotemporal (assessed with the GAITRite® Walkway), dynamic postural control (assessed with Microsoft Kinect) variables and hand grip strength (assessed with a dynamometer); and measures of physical activity (assessed using accelerometry), cognitive development (assessed with Wechsler Preschool and Primary Scale of Intelligence) and emotional and behavioural status (assessed with the Strengths and Difficulties Questionnaire and the Developmental and Wellbeing Assessment). Caregivers will be asked to complete questionnaires on demographics, physical activity, activities of daily living and motor function (assessed with Pediatric Evaluation of Disability Inventory, Pediatric Quality of Life Questionnaire, the Little Developmental Co-ordination Questionnaire and an activity diary) at the 5 year assessment.