Investigation of Roll-over Shape Characteristics in Healthy Older Individuals
Author ORCID Identifier
Advisor Information
Dr.Sara Myers
Location
MBSC 201
Presentation Type
Poster
Start Date
6-3-2020 2:00 PM
End Date
6-3-2020 3:15 PM
Abstract
Human lower limbs demonstrate rocker like qualities during the stance phase of walking, which are quantified using roll-over shape (ROS). The ROS quantifies the effective geometry traced by the ankle-foot complex during the single support phase of walking. Literature shows that the ROS in healthy young individuals is invariant to walking at different speeds, while wearing different types of footwear, and when carrying additional weight. ROS has been used in prosthetic foot design and alignment, orthoses design as well as alignment and shoe design. However, ROS characteristics have been studied in healthy young adults and children but not in older people, who could benefit more from these assistive devices. This pilot project was conducted to study the roll-over characteristics in healthy older individuals. Five healthy older subjects (Male, mean age 64.6 years) participated in a previous IRB approved study and their gait data was retrospectively analyzed. Gait data was collected using a 3D motion capture system with eight infrared camera and center of pressure (CoP) data was collected using a force plate embedded in the walkway. Three gait trials for each leg of the subject at self-selected walking speed were used for the analysis. The average ROS radii found in healthy older individuals are comparable to children and young adults, however arc length was longer in these adults. Our intention is to conduct a future study with a larger sample size of older individuals.
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Investigation of Roll-over Shape Characteristics in Healthy Older Individuals
MBSC 201
Human lower limbs demonstrate rocker like qualities during the stance phase of walking, which are quantified using roll-over shape (ROS). The ROS quantifies the effective geometry traced by the ankle-foot complex during the single support phase of walking. Literature shows that the ROS in healthy young individuals is invariant to walking at different speeds, while wearing different types of footwear, and when carrying additional weight. ROS has been used in prosthetic foot design and alignment, orthoses design as well as alignment and shoe design. However, ROS characteristics have been studied in healthy young adults and children but not in older people, who could benefit more from these assistive devices. This pilot project was conducted to study the roll-over characteristics in healthy older individuals. Five healthy older subjects (Male, mean age 64.6 years) participated in a previous IRB approved study and their gait data was retrospectively analyzed. Gait data was collected using a 3D motion capture system with eight infrared camera and center of pressure (CoP) data was collected using a force plate embedded in the walkway. Three gait trials for each leg of the subject at self-selected walking speed were used for the analysis. The average ROS radii found in healthy older individuals are comparable to children and young adults, however arc length was longer in these adults. Our intention is to conduct a future study with a larger sample size of older individuals.