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Do Strike Patterns or Shoe Conditions have a Predominant Influence on Foot Loading?
Xiaole Sun1, Yang Yang1, Lin Wang1,2
1School of Kinesiology, Shanghai University of Sport, Shanghai 200438, Shanghai China.
Journal of Human Kinetics
|November 16, 2018
Summary
Running strike patterns significantly impact foot loading more than shoe conditions. Forefoot strike patterns (FFS) may prevent heel impact but increase forefoot pressure, posing potential injury risks.
Area of Science:
- Biomechanics
- Sports Medicine
- Running Physiology
Background:
- Understanding running biomechanics is crucial for injury prevention.
- Foot strike patterns and shoe conditions are key variables influencing running gait and impact forces.
Purpose of the Study:
- To investigate the distinct and combined effects of running strike patterns (forefoot vs. rearfoot) and shoe conditions (shod vs. barefoot) on foot loading during running.
- To determine which factor, strike pattern or shoe condition, exerts a greater influence on plantar pressure distribution and loading rates.
Main Methods:
- Twelve male runners performed overground running under four conditions: shod rearfoot strike (SR-RFS), shod forefoot strike (SR-FFS), barefoot rearfoot strike (BR-RFS), and barefoot forefoot strike (BR-FFS).
- Kinetic data, including ground reaction forces and plantar pressure, were collected using Kistler force plates and the Medilogic insole system.
Main Results:
- Shoe conditions with rearfoot strike patterns (SR-RFS) significantly reduced the maximum loading rate compared to barefoot conditions.
- Shoe conditions with forefoot strike patterns (SR-FFS) significantly increased maximum push-off force compared to barefoot conditions.
- Plantar pressure variables were predominantly influenced by strike patterns (15/18 variables) over shoe conditions (7/18 variables), with rearfoot strike patterns showing increased midfoot and heel pressure at later time points.
Conclusions:
- Running strike patterns exert a more significant influence on foot loading and plantar pressure characteristics than shoe conditions.
- While forefoot strike patterns can mitigate the impact forces associated with rearfoot strike patterns, they may increase the risk of metatarsus/phalanx injuries due to prolonged peak forefoot pressure.
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