科研之友
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摘要
Context: Clinically, lowering of the medial longitudinal arch is believed to be closely related to rearfoot eversion. However, the relationship between arch height and rearfoot eversion during gait is unclear. %26lt;br%26gt;Objectives: (1) To examine the influence of 2 reference positions (weight-bearing neutral position [WBNP] and subtalar neutral position [STNP]) on maximum rearfoot eversion, tibial internal rotation, knee flexion, knee internal rotation, and dorsiflexion-plantar flexion of ankle joint measures during jogging and (2) to compare the relationships among static arch height, navicular drop, and the 2 maximum rearfoot eversion measures. %26lt;br%26gt;Design: Crossover study. %26lt;br%26gt;Setting: Gait laboratory. %26lt;br%26gt;Patients or Other Participants: Thirty-three volunteers between 18 and 40 years of age. %26lt;br%26gt;Intervention(s): Each participant stood on the treadmill in 2 static positions: WBNP and STNP. Kinematic data were obtained using a 10-camera motion analysis system (120 Hz) when participants jogged at 2.65 m/s on the treadmill in bare feet. %26lt;br%26gt;Main Outcome Measure(s): Rearfoot and shank angular kinematics, navicular drop, and static arch height. %26lt;br%26gt;Results: Maximum rearfoot eversion was greater (WBNP: 4.03 degrees +/- 2.58 degrees, STNP: 10.91 degrees +/- 5.34 degrees) when STNP was the static reference (P%26lt;.001). A strong correlation was seen between maximum STNP eversion and navicular drop (r=0.842) but not between WBNP and navicular drop (r=0.216). Differences were noted in dorsiflexion and knee kinematics during gait between the static references; however, the effect sizes were low, and the mean differences were smaller than 2, which was less than 5% of total excursion during gait. %26lt;br%26gt;Conclusions: Using STNP rather than WBNP as the reference position affects estimates of frontal-plane rearfoot movement but not other ankle or knee motions in jogging.
- 出版日期2012-2
