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Cognitive dual-task, obstacle circumvention during walking and asymmetry: effects on motor and visual strategies in older people with Parkinson disease

Grant number: 15/15928-4
Support type:Scholarships in Brazil - Master
Effective date (Start): November 01, 2015
Effective date (End): December 31, 2017
Field of knowledge:Health Sciences - Physical Education
Principal researcher:Fabio Augusto Barbieri
Grantee:Vinícius Alota Ignácio Pereira
Home Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Associated scholarship(s):16/17336-0 - Visual inspection time in patients with Parkinson's disease in the presence of freezing, BE.EP.MS


Older people with Parkinson's disease (PD) show deficits in cortical and subcortical areas, which to impair the planning and execution of motor actions. Repetitive, simultaneous and sequential movements are mainly affected, especially when concomitant cognitive task (dual-task) is performed during locomotion. More complex locomotor tasks, such as obstacle circumvention during walking, seem to evidence these deficits and increase the asymmetry this population. Therefore, the aims of this study are: a) to analyze the motor and visual strategy on obstacle circumvention during walking with cognitive dual-task in older people with DP and neurologically healthy individuals; b) to verify the effect of cognitive dual-task on asymmetry/symmetry of the obstacle circumvention during walking in older people with DP. Two studies will be developed to answer the questions of this project. Fifteen individuals with DP and 15 neurologically healthy individuals will participate in the study. Participants will perform the task to walk, in self-selected speed, with obstacle circumvention, which will be positioned at half distance that the participant will cover (10 m). Five trials of the following conditions will be performed: unobstructed walking with and without cognitive dual-task and walk with obstacle circumvention with and without cognitive dual-task. In tasks with obstacle circumvention, participants will perform five trials for each side. The motor (Vicon Motion System) and visual parameters (ASL, Eye Tracking Mobile System) of the conditions of interest, as well the variability of these parameters, will be compared through ANOVAs according to the independent variables of the each study.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BARBIERI, FABIO AUGUSTO; POLASTRI, PAULA FAVARO; BUCKEN GOBBI, LILIAN TERESA; SIMIELI, LUCAS; ALOTA PEREIR, VINICIUS IGNACIO; BAPTIST, ANDRE MACARI; MORETTO, GABRIEL FELIPE; FIORELLI, CAROLINA MENEZES; ITIKAWA IMAIZUMI, LUIS FELIPE; RODRIGUES, SERGIO TOSI. Obstacle circumvention and eye coordination during walking to least and most affected side in people with Parkinson's disease. Behavioural Brain Research, v. 346, p. 105-114, . (15/15928-4, 14/20549-0, 16/09805-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
PEREIRA, Vinícius Alota Ignácio. Cognitive dual-task, obstacle circumvention during walking and asymmetry: effects on motor and visual strategies in older people with Parkinson disease. 2017. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências. Bauru Bauru.

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