The effects of shoe traction and obstacle height on lower extremity coordination dynamics during walking
| Autor: | John M. Noble, Leslie M. Decker, Gregory M. Karst, Jeremy J. Houser, Nicholas Stergiou |
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| Rok vydání: | 2009 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Friction medicine.medical_treatment Physical Therapy Sports Therapy and Rehabilitation Human Factors and Ergonomics Walking Article Lower limb Young Adult Physical medicine and rehabilitation Traction medicine Humans Safety Risk Reliability and Quality Engineering (miscellaneous) Mathematics Nebraska Human engineering Traction (orthopedics) Limb length Shoes Lower Extremity Nonlinear Dynamics Motor Skills Obstacle Physical therapy Ergonomics sense organs Slippage Relative phase |
| Zdroj: | Applied Ergonomics. 40:895-903 |
| ISSN: | 0003-6870 |
| Popis: | This study aims to investigate the effects of shoe traction and obstacle height on lower extremity relative phase dynamics (analysis of intralimb coordination) during walking to better understand the mechanisms employed to avoid slippage following obstacle clearance. Ten participants walked at a self-selected pace during eight conditions: four obstacle heights (0%, 10%, 20%, and 40% of limb length) while wearing two pairs of shoes (low and high traction). A coordination analysis was used and phasing relationships between lower extremity segments were examined. The results demonstrated that significant behavioral changes were elicited under varied obstacle heights and frictional conditions. Both decreasing shoe traction and increasing obstacle height resulted in a more in-phase relationship between the interacting lower limb segments. The higher the obstacle and the lower the shoe traction, the more unstable the system became. These changes in phasing relationship and variability are indicators of alterations in coordinative behavior, which if pushed further may have lead to falling. |
| Databáze: | OpenAIRE |
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