The likelihood of concussion varies by sport. Four categories of sport type have been created, defined by the likelihood of head trauma during play: 1) collision sports (e.g., football, rugby), 2) contact sports (e.g., soccer, basketball), 3) limited contact sports (e.g., volleyball, softball), and 4) non-contact sports (e.g., cross country, crew, cycling). Since a change in postural control is a cardinal sign of a concussion, preseason assessments of postural control are recommended to document baseline performance to determine whether a disparity in performance exists after a suspected concussion. However, it is currently unknown how sport type, sex, and age may affect preseason postural control.