University of Nebraska Omaha
DigitalCommons@UNO Journal Articles
Biomechanics Research Building
9-2003
Subtalar and knee joint interaction during running at various stride lengths Nicholas Stergiou University of Nebraska at Omaha,
[email protected]
Barry T. Bates University of Oregon
Max J. Kurz University of Nebraska at Omaha
Follow this and additional works at: http://digitalcommons.unomaha.edu/biomechanicsarticles Part of the Biomechanics Commons Recommended Citation Stergiou, Nicholas; Bates, Barry T.; and Kurz, Max J., "Subtalar and knee joint interaction during running at various stride lengths" (2003). Journal Articles. Paper 99. http://digitalcommons.unomaha.edu/biomechanicsarticles/99
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Subtalar and knee joint interaction during running at various stride lengths NICHOLAS STERGIOU+, BARRY T. BATES*, and MAX J. KURZ+ +
School of Health Physical Education and Recreation, University of Nebraska at Omaha * Department of Exercise and Movement Science, University of Oregon
Corresponding Author:
Nick Stergiou, PhD HPER Biomechanics Lab University of Nebraska at Omaha Omaha, NE 68182-0216 tel: (402) 5543247 fax: (402) 5543693 e-mail:
[email protected]
ABSTRACT Background: It has been suggested that during running proper coordination between subtalar pronation/supination and knee flexion/extension via tibial rotation is important to attenuate ground reaction impact forces (GRIF). Lack of coordination over time may produce a wide range of injuries. It was hypothesized that increasing stride length would result in higher GRIF. It was also hypothesized that alterations in stride length would result in changes of the subtalar/knee coordination. Methods: Six subjects ran under three different stride lengths (normal stride, understride and overstride) at their self-selected pace. Sagittal, rear view kinematic data and GRIF kinetic data were collected. The subtalar/knee coordination was evaluated via timing and relative velocity measures. Repeated measures ANOVA were performed on these measures with a Tukey post-hoc analysis conducted where appropriate (p
