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  • Title: Comparison of Plantar Pressure Distribution between Different Speed and Incline During Treadmill Jogging.
    Author: Ho IJ, Hou YY, Yang CH, Wu WL, Chen SK, Guo LY.
    Journal: J Sports Sci Med; 2010; 9(1):154-60. PubMed ID: 24149400.
    Abstract:
    The aim of this study was to examine the effect of changes in speed and incline slope on plantar pressure distribution of the foot during treadmill jogging. Plantar pressure parameters were measured with the Pedar-X system in twenty healthy girls (mean age of 20.7 years, mean height of 1.60m, and a mean weight of 53.35kg). Because variations in walking speed or slope can significantly change the magnitude of plantar pressure, comparisons of plantar pressure distribution between the two independent protocols during treadmill jogging were considered in this study. First, the subjects ran at the same speed of 2 m·s(-1) with different incline slopes of 0%, 5%, 10%, and 15%. Second, they ran on the same slope of 0% with different speeds of 1.5 m·s(-1), 2.0 m·s(-1), and 2.5 m·s(-1). The peak pressure of the eight plantar surface areas, apart from the medial forefoot and the hallux, significantly increased (p < 0.05) with an increase of 33% of peak pressure from 1.5 m·s(-1) to 2.5 m·s(-1) (speed) at heel region. In contrast, the peak pressures at the heel, medial fore-foot, toe and hallux decreased significantly (p < 0. 05) with increasing incline slope. At the heel, peak pressure reduced by 27% from 0% to 15% incline, however, pressure at the lateral midfoot region increased as following. Different speeds and incline slopes during jogging were associated with changes in plantar pressures. By systematic investigation of foot kinematics and plantar pressure during jogging with varying incline slope and speed, the results of this study provided further insight into foot biomechanics during jogging. Key pointsThe study aimed to compare the plantar pressure distribution of the foot between different incline and speed during treadmill jogging by using plantar insole measurement system.With the increase of speed, apart from the hallux and medical forefoot, the peak pressure of all regions was raised significantly.As the slope increased, there was reduced peak pressure of the heel, medial forefoot, and hallux and toes.
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