title: The effects of closed-head injury on postural sway.
abstract: The purpose of this study was to determine the effects of closed-head injury upon postural sway. Forty-eight subjects (26 males and 22 females) between the ages of 18 and 45 were equally divided into four groups corresponding to their level of head injury. Group 1 had not incurred a head injury, group 2 members incurred head injuries but did not lose consciousness, group 3 lost consciousness for less than 6 h, and group 4 lost consciousness for greater than 6 h. All subjects were at least 1 yr postinjury. Each subject performed three trials of six variations of the Romberg test. The center of pressure transmitted through the bottom of the feet was monitored during each 30-s trial. Total, anterior-posterior (AP), and medial-lateral (ML) sway was calculated from center of pressure data. The severely head-injured group generally evidenced greater AP sway than the other three experimental groups for all but one test condition. It was concluded that closed-head injury, particularly when associated with relatively long periods of unconsciousness, results in postural instability.
authors.affiliation: Physical Education Department, Indiana State University, Terre Haute 47809.
authors.forename: C D
authors.initials: CD
authors.lastname: Ingersoll
authors.forename: C W
authors.initials: CW
authors.lastname: Armstrong
mesh_terms: D000328:Adult; D005260:Female; D016489:Head Injuries, Closed / Q000503:physiopathology*; D006801:Humans; D008297:Male; D009460:Neurologic Examination; D011187:Posture