Studies in Sport Medicine

Comparison of time domain variables of ground reaction force during the stance phase of running using unstable and ordinary shoes

Document Type : Research Paper

Authors

Homa Mansouri 1
Heydar Sadeghi 2, 3
Mansour Elami 4
Raghad Memar 1

1 Department of Sports Biomechanics and injuries, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran

2 Department of Sports Biomechanics and Rehabiltation, Kinesilogy Research Center, Kharazmi University, Tehran, Iran

3 Professor, Department of Sport Biomechanics Kinesiology Research Center, Kharazmi University, Tehran, Iran.

4 Department of Sports Biomechanics, Faculty of Physical Education and Sports Sciences, University of Mazandaran, Babolsar, Iran

https://doi.org/10.22089/smj.2023.14160.1646
Abstract
Background and objective: According to the assertion made about the damaging role of running shoes as one of the 11 causes of injury seen in every 1000 hours of training, The purpose of this study was to compare the time domain variables of ground reaction force during the stance phase of running using unstable and ordinary shoes.
Method: 20 active females ran in two conditions using an ordinary shoe with a flat sole and an unstable shoe with a rounded sole. The peak values of the ground reaction forces and their related time to peak, free moment peak, impulse, instantaneous and average loading rates were collected and evaluated using a force Plate at a sampling rate of 1000 Hz during stance phase of running. Paired t-test and Wilcoxon test were used to compare the dependent variables between the two conditions (p≤0/05).
Results: Time to peak of vertical passive force and braking force and free moment peak were significantly lower in unstable shoe condition in compared to the ordinary shoe condition while lateral force peak and instantaneous and average loading rates were significantly higher in unstable shoe condition in compared to the ordinary shoe condition (p≤0.05).
Conclusion: According to the findings of the research, since unstable shoes decrease vertical passive force peak time and increase vertical loading rates and create more shock-related running injuries, it does not seem that using these types of shoes have an advantage for runners in preventing or treating injuries.

Keywords

Running
unstable shoes
ground reaction force

Subjects

 
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Studies in Sport Medicine
Volume 17, Issue 43
Winter 2025
Pages 17-32

  • Receive Date 17 January 2023
  • Revise Date 07 May 2023
  • Accept Date 24 May 2023

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