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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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COMPARISON OF PLANTAR PRESSURE DISTRIBUTION BETWEEN DIFFERENT SPEED AND INCLINE DURING TREADMILL JOGGING |
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I-Ju Ho1, Yi-You Hou1, Chich-Haung Yang3, Wen-Lan Wu1, Sheng-Kai Chen1,2 and Lan-Yuen Guo1  |
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1Department of Sports Medicine, College of Medicine, Kaohsiung Medical University, and 2Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan, 3Department of Physical Therapy, Tzu-Chi College of Technology, Hualien, Taiwan |
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© Journal of Sports Science and Medicine (2010) 9, 154 - 160 |
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| 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 words: Jogging, plantar pressure, incline, speed. |
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