title: Postural control in children with and without neurofibromatosis type 1.
abstract: Previous research has evaluated the motor proficiency of children with neurofibromatosis type 1 (NF1) and found delays on the balance subtest. However the balance subtest was found to have low sensitivity for identifying balance impairments. This study examines the differences in postural control between children with NF1 and peers with typical development using a force plate. A single limb stance test on a force plate was completed for all participants. The force plate variables, center of pressure maximum distance in the anterior/posterior direction (COPmax A/P) and center of pressure velocity (COPvel A/P) were compared between groups. The NF1 group's performance was significantly poorer than the control group in both COPmax A/P (p=.01) and COPvel A/P (p=.01). When separated into specific age ranges, only the children in the NF1 group between 5 and 12years of age demonstrated statistically significant differences in the COP variables. The COP variables for the 13- to 18-year-old group were not significantly different. These results indicate that young children with NF1 have poor postural control. However, postural control appears to improve with maturation.
authors.affiliation: Shriners Hospitals for Children Salt Lake City, Salt Lake City, UT, USA. Electronic address: bajohnson@shrinenet.org.
authors.forename: Barbara A
authors.initials: BA
authors.lastname: Johnson
authors.affiliation: Shriners Hospitals for Children Salt Lake City, Salt Lake City, UT, USA; Department of Orthopedics, University of Utah, Salt Lake City, UT, USA.
authors.forename: Bruce A
authors.initials: BA
authors.lastname: MacWilliams
authors.affiliation: Shriners Hospitals for Children Salt Lake City, Salt Lake City, UT, USA; Department of Pediatrics, Division of Medical Genetics, University of Utah, Salt Lake City, UT, USA.
authors.forename: David A
authors.initials: DA
authors.lastname: Stevenson
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005081:Exercise Therapy; D005260:Female; D006801:Humans; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D009456:Neurofibromatosis 1 / Q000175:diagnosis / Q000503:physiopathology* / Q000534:rehabilitation; D004856:Postural Balance / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology; D012016:Reference Values; D016474:Weight-Bearing / Q000502:physiology
keywords: Balance; Center of pressure measures; Neurofibromatosis type 1; Postural control; Single limb stance test