title: PARKINSON'S DISEASE PATIENTS WITH DOMINANT HEMIBODY AFFECTED BY THE DISEASE RELY MORE ON VISION TO MAINTAIN UPRIGHT POSTURAL CONTROL.
abstract: This study assesses the association between disease onset side (dominant or non-dominant) and vision on postural control of Parkinson's disease patients. Patient volunteers composed two groups, according to the onset side affected: Dominant group (n=9; M age=66.1 yr., SD=7.2; 6 women, 3 men) and Non-dominant group (n=9; M age=67.4 yr., SD=6.4; 6 women, 3 men). The groups' postural control was assessed by posturography during quiet upright stance in two conditions, Eyes open and Eyes closed. Two-way analyses of variance (ANOVAs; group×condition) with repeated measures for the second factor assessed the differences associated with affected hemibody and vision on postural control. Analyses indicated that patients with the dominant side affected also presented significantly greater variation in center of pressure than those with the non-dominant side affected, mainly in the Eyes closed condition. The results demonstrate a higher reliance on vision in the dominant side, possibly to compensate somatosensory system impairments. These results also highlight the importance of analyzing the hemibody affected by the disease when postural control is assessed in this population.
authors.affiliation: 1 UNESP-Universidade Estadual Paulista.
authors.forename: Juliana
authors.initials: J
authors.lastname: Lahr
authors.affiliation: 1 UNESP-Universidade Estadual Paulista.
authors.forename: Marcelo Pinto
authors.initials: MP
authors.lastname: Pereira
authors.affiliation: 1 UNESP-Universidade Estadual Paulista.
authors.forename: Paulo Henrique Silva
authors.initials: PH
authors.lastname: Pelicioni
authors.affiliation: 1 UNESP-Universidade Estadual Paulista.
authors.forename: Luana Carolina
authors.initials: LC
authors.lastname: De Morais
authors.affiliation: 1 UNESP-Universidade Estadual Paulista.
authors.forename: Lilian Teresa Bucken
authors.initials: LT
authors.lastname: Gobbi
mesh_terms: D000368:Aged; D000704:Analysis of Variance; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D010300:Parkinson Disease / Q000150:complications* / Q000503:physiopathology*; D004856:Postural Balance / Q000502:physiology*; D012678:Sensation Disorders / Q000150:complications* / Q000503:physiopathology; D014785:Vision, Ocular / Q000502:physiology*