| Can Outer Sole Height of Running Shoes Induce Landing of Midfoot Strike? |
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Che-Cheong Ryew, Jin-Hyun Kim |
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Jeju National University |
Correspondence:
Jin-Hyun Kim,
Email: jinhyun0829@naver.com
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Received: 11 October 2013 • Accepted: 19 April 2014 |
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| Abstract |
INTRODUCTION
The purpose of this study was to investigate the effect of shoe heel to toe drop differences in strike patterns during running and to examine consistency of strike patterns.
METHOD
Ten healthy females participated in this study. All subjects were recreational runners currently running at least 2 km per week. These subjects preferred the heel strike pattern and ran in conventional running shoes. All trials for each subject were completed on the same day, and the order of shoe conditions was randomized.
Each subject was instructed to run with both a heel strike and a midfoot strike. After a period of 3 min on a treadmill at 3.0 m/s the sole angle was measured. We collected sole angle data using camera. The independent variables were strike pattern running and heel to toe drop, and the dependent variable was sole angle at the sole contact. Statistical comparisons were carried out using a two-way analysis of variance with repeated measures (alpha = 0.05) and intra class correlations were used for consistency analysis.
RESULT
The conventional shoes(drop 8 mm) were higher than other conditions(drop 4 mm and barefoot) in sole angle during running. Consistency of midfoot strike patterns were slightly lower in barefoot running and conventional shoe conditions than in the minimalist shoe condition There were significant differences at the sole angle in heel strike running pattern (Figure 1) but there were no transitions for the strike pattern at foot contact. There were transitions in strike pattern when the subjects were instructed to change their running pattern. Otherwise there were no significant differences at the sole angle between drop differences when subjects ran with a midfoot strike pattern.
CONCLUSION
Sole height of running shoes cause to midfoot strike and minimalist running shoe tend to increase the correlation of strike pattern. Sole height of running shoes are one of the cause to change the strike pattern however training program is more important in midfoot running. |
| Keywords:
Running shoes, Midfoot strike, Strike pattern, Outer sole height, Sole angle |
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