Lower extremity kinematics of curve sprinting displayed by runners using a transtibial prosthesis |
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| Authors: | Yumeng Li Kathy J Simpson Lee Nolan Marilyn Miller Benjamin Johnson |
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| Institution: | 1. Department of Kinesiology, California State University, Chico, CA, USAyumengli@uga.edu;3. Department of Kinesiology, University of Georgia, Athens, GA, USA;4. Department of Rehabilitation, J?nk?ping University, J?nk?ping, Sweden;5. Millsboro, DE, USA;6. Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, USA |
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| Abstract: | The purpose of the study was to determine if the kinematics exhibited by skilled runners wearing a unilateral, transtibial prosthesis during the curve section of a 200-m sprint race were influenced by interaction of limb-type (prosthetic limb (PROS-L) vs. nonprosthetic limb (NONPROS-L)) and curve-side (inside and outside limb relative to the centre of the curve). Step kinematics, toe clearance and knee and hip flexion/extension, hip ab/adduction for one stride of each limb were generated from video of 13 males running the curve during an international 200 m transtibial-classified competition. Using planned comparisons (P < 0.05), limb-type and curve-side interactions showed shortest support time and lowest hip abduction displacement by outside-NONPROS-L; shortest step length and longest time to peak knee flexion by the inside-PROS-L. For limb-type, greater maximum knee flexion angle and lower hip extension angles and displacement during support and toe clearance of PROS-Ls occurred. For curve-side, higher hip abduction angles during non-support were displayed by inside-limbs. Therefore, practitioners should consider that, for curve running, these kinematics are affected mostly by PROS-L limitations, with no clear advantage of having the PROS-L on either side of the curve. |
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| Keywords: | Running below-knee amputation prostheses biomechanics |
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