Association of Navicular Drop and Selected Lower-Limb Biomechanical Measures During the Stance Phase of Running

in Journal of Applied Biomechanics
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There is evidence to suggest that navicular drop measures are associated with specific lower-extremity gait biomechanical parameters. The aim of this study was to examine the relationship between navicular drop and a) rearfoot eversion excursion, b) tibial internal rotation excursion, c) peak ankle inversion moment, and d) peak knee adduction moment during the stance phase of running. Sixteen able-bodied men having an average age of 28.1 (SD = 5.30) years, weight of 81.5 (SD = 10.40) kg, height of 179.1 (SD = 5.42) cm volunteered and ran barefoot at 170 steps/minute over a force plate. Navicular drop measures were negatively correlated with tibial internal rotation excursion (r = −0.53, P = .01) but not with rearfoot eversion excursion (r = −0.19; P = .23). Significant positive correlations were found between navicular drop and peak knee adduction moment (r = .62, P < .01) and peak ankle inversion moment (r = .60, P < .01). These findings suggest that a low navicular drop measure could be associated with increasing tibial rotation excursion while high navicular drop measure could be associated with increased peak ankle and knee joint moments. These findings indicate that measures of navicular drop explained between 28% and 38% of the variability for measures of tibial internal rotation excursion, peak knee adduction moment and peak ankle inversion moments.

Mansour Eslami is with the Department of Physical Education and Sport Sciences, University of Mazandaran, Iran. Mohsen Damavandi is with the Faculty of Physical Education and Sport Sciences, Hakim Sabzevari University, Sabzevar, Iran. Reed Ferber is with the Faculties of Kinesiology and Nursing, University of Calgary, Calgary, Canada, and with the Running Injury Clinic, University of Calgary, Calgary, Canada. Address author correspondence to Mansour Eslami at mseslami@gmail.com.

Journal of Applied Biomechanics
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