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Biomechanical risks during simulated street crossing in older adults

Grant number: 12/03567-9
Support Opportunities:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): January 01, 2013
Effective date (End): June 30, 2013
Field of knowledge:Health Sciences - Physiotherapy and Occupational Therapy
Principal Investigator:Mauro Gonçalves
Grantee:Camilla Zamfolini Hallal
Supervisor: Denis Brunt
Supervisor: Edgar Ramos Vieira
Host Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
Research place: Florida International University (FIU), United States ;   Florida International University (FIU), United States  
Associated to the scholarship:11/11735-6 - Biomechanical and Metabolic Analysis of fall risk of elderly women submitted to a balance training with vibratory pole, BP.DR


Aging process is related to motor and sensorial changes that could compromise the ability to perform complex motor tasks and are associated to a high incidence of falls in older adults. Thus, daily activities challenges during walking, could represent a potential risk to fall for old population. Cross the street with security is specially hard to old adults, because the sensorial-motor changes related to aging, could occur an increase for the risk of falls. When pedestrians, especially old adults, cross the street at the same time they perform other motor and cognitive tasks, which increase the risk to accidents. In line of this, the Elder Pedestrian Advisory Group of Florida Department of Transportation and the Florida International University, Miami, Florida, USA, recently created the project "Safe Steps", which aim to educate and public awareness to prevent injuries and death in old adults pedestrians. The objective of this study will be to analyze the influence of functional dual tasks during walking and during simulation of crossing a street in biomechanical indicators of risk of falls in older adults. Thirty two volunteers separated in two groups: young group and older group will participate of this study. The data collect will be performed at Physical Therapy Human Performance Laboratory from the Department of Physical Therapy of Florida International University and all the assessment procedures will occur in two days. In the first day will be performed the walking familiarization in the following conditions: walking at preferred speed and walking during crossing street simulation. In the second day will performed the assessment of walking at preferred speed and walking during crossing street simulation with the implementation of functional dual tasks. Electromyographic, kinematic and dynamometric variables will be analyzed during all walking conditions. Statistical analysis will be performed with the normality and homogeneity verification and, posteriorly, will be adopted the appropriate test to compare the variables. For all statistical analysis the significant level will be set at p < 0,05. (AU)

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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)
VIEIRA, EDGAR R.; LIM, HYUN-HWA; BRUNT, DENIS; HALLAL, CAMILLA Z.; KINSEY, LAURA; ERRINGTON, LISA; GONCALVES, MAURO. Temporo-spatial gait parameters during street crossing conditions: A comparison between younger and older adults. GAIT & POSTURE, v. 41, n. 2, p. 510-515, . (12/03567-9)

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