Variability of crossing phase in older people with Parkinson's disease is dependent of obstacle height

Autor(es)

Simieli, Lucas ^{[1, 2]} ; Barbieri, Fabio Augusto ^[2] ; Orcioli-Silva, Diego ^[1] ; Lirani-Silva, Ellen ^[1] ; Beretta, Victor Spiandor ^[1] ; Rocha dos Santos, Paulo Cezar ^[1] ; Bucken Gobbi, Lilian Teresa ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Posture & Gait Studies Lab LEPLO, Dept Phys Educ, Campus Rio Claro, Rio Claro - Brazil

^[2] Sao Paulo State Univ Unesp, Human Movement Res Lab MOVI LAB, Dept Phys Educ, Campus Bauru, Bauru - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 8, OCT 5 2018.
• Citações Web of Science: 1

Resumo

Our aim was investigating variability in spatiotemporal parameters and kinetics of obstacle avoidance steps of different height obstacles in people with Parkinson's disease (PD) and healthy older people. Twenty-eight participants have included (15 PD - stage disease: 2.1 +/- 0.4 pts) and 13 healthy older people (control group). Each subject performed 10 trials of the following tasks: low obstacle, intermediate obstacle and high obstacle. The presentation order was randomized by block for each condition and participant. The spatiotemporal parameters was collected by GAITRite. An optoelectronic system (Optotrak Northern Digital Inc.) with 100 Hz of frequency was used to collect obstacle parameters. The kinect parameters (propulsion impulse and braking impulse) were acquire through two force plates (AccuGait), with a frequency of acquisition 200 Hz. Intersteps variability was calculated throughout mean values, standard deviation and coefficient of variation of two obstacle avoidance steps for each trial. PD group presented greater variability than control group on vertical and horizontal distances to the obstacle. Obstacle height did not change kinect's parameters for both groups. The combination of task complexity (obstacle height) and disease impairments (gait alteration, loss of balance, etc) contributing for greater variability of Parkinson's group. Besides, low obstacle and high obstacle seem to exacerbate variability of distance between obstacle and foot. (AU)

• Processo FAPESP: 14/20549-0 - Impacto de ajustes motores e da informação visual no desviar do obstáculo durante o andar em idosos com Doença de Parkinson
• Beneficiário: Fabio Augusto Barbieri
• Modalidade de apoio: Auxílio à Pesquisa - Regular