TY - JOUR
T1 - Postural control, falls and Parkinson's disease
T2 - Are fallers more asymmetric than non-fallers?
AU - Barbieri, Fabio Augusto
AU - Carpenter, Mark
AU - Beretta, Victor Spiandor
AU - Orcioli-Silva, Diego
AU - Simieli, Lucas
AU - Vitório, Rodrigo
AU - Gobbi, Lilian Teresa Bucken
N1 - Funding Information:
This work was supported by the São Paulo Research Foundation - FAPESP [grant number 2012/24040-9 ; grant number 2013/00925-4 ]; the FUNDUNESP [grant number 0716/011 ]; and in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil ( CAPES ) - finance code 001.
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Postural control asymmetry is an important aspect of Parkinson's disease (PD) that may be associated with falls. The aim of this study was to compare the postural control asymmetry during postural tasks between fallers and non-fallers in people with PD and neurological healthy age-matched controls (CG). Individuals with idiopathic PD (n = 24) and CG (n = 24) were sub-divided into groups of fallers and non-fallers based on their fall history over the past year. Participants performed blocks of three 30-s trials of quiet standing with feet in a side-by-side and semi-tandem stance position. The center of pressure parameters for each limb were measured and used to calculate the symmetry index. Fallers compared to non-fallers had decreased asymmetry of vertical force in the side-by-side condition. During the tandem-front leg condition, PD non-fallers increased asymmetry of the medial-lateral velocity of sway compared to CG non-fallers. In addition, for the tandem–back leg condition, PD non-fallers increased asymmetry of total displacement and medial-lateral root mean square and mean velocity of sway compared to PD fallers. The results of the study did not support the hypothesis that PD fallers are more asymmetric than PD non-fallers. On the contrary, our results indicated that PD non-fallers had higher postural control asymmetry, especially during the more challenging (semi-tandem standing) postural task.
AB - Postural control asymmetry is an important aspect of Parkinson's disease (PD) that may be associated with falls. The aim of this study was to compare the postural control asymmetry during postural tasks between fallers and non-fallers in people with PD and neurological healthy age-matched controls (CG). Individuals with idiopathic PD (n = 24) and CG (n = 24) were sub-divided into groups of fallers and non-fallers based on their fall history over the past year. Participants performed blocks of three 30-s trials of quiet standing with feet in a side-by-side and semi-tandem stance position. The center of pressure parameters for each limb were measured and used to calculate the symmetry index. Fallers compared to non-fallers had decreased asymmetry of vertical force in the side-by-side condition. During the tandem-front leg condition, PD non-fallers increased asymmetry of the medial-lateral velocity of sway compared to CG non-fallers. In addition, for the tandem–back leg condition, PD non-fallers increased asymmetry of total displacement and medial-lateral root mean square and mean velocity of sway compared to PD fallers. The results of the study did not support the hypothesis that PD fallers are more asymmetric than PD non-fallers. On the contrary, our results indicated that PD non-fallers had higher postural control asymmetry, especially during the more challenging (semi-tandem standing) postural task.
KW - Asymmetry
KW - Fall
KW - Human movement
KW - Parkinson's disease
KW - Posture
UR - http://www.scopus.com/inward/record.url?scp=85057806944&partnerID=8YFLogxK
U2 - 10.1016/j.humov.2018.10.008
DO - 10.1016/j.humov.2018.10.008
M3 - Article
C2 - 30528983
AN - SCOPUS:85057806944
SN - 0167-9457
VL - 63
SP - 129
EP - 137
JO - Human Movement Science
JF - Human Movement Science
ER -
