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Original scientific paper

Analysis of ground reaction force in gait during different phases of pregnancy

Marta Gimunova orcid id orcid.org/0000-0001-7284-2678 ; Faculty of Sports Studies, Masaryk University, Brno, Czech Republic
Mario Kasović ; Faculty of Kinesiology, University of Zagreb, Croatia
Martin Zvonar ; Faculty of Sports Studies, Masaryk University, Brno, Czech Republic
Pavel Turčínek ; Faculty of Business and Economics, Mendel University in Brno, Czech Republic
Branka Matković ; Faculty of Kinesiology, University of Zagreb, Croatia
Pavel Ventruba ; Department of Gynecology and Obstetrics, Faculty of Medicine, Masaryk University and Faculty Hospital Brno, Czech Republic
Martin Vaváček ; Faculty of Sports Studies, Masaryk University, Brno, Czech Republic
Damir Knjaz ; Faculty of Kinesiology, University of Zagreb, Croatia


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Abstract

During pregnancy there are increased biomechanical demands on women affecting gait parameters. The purpose of this study was to analyze changes in vertical ground reaction force (GRF), normalized by
body mass, during advancing phases of pregnancy. Nine pregnant subjects participated in this study at three pregnancy stages. To determine in-shoe pressure distribution Pedar Insole System was used (100 Hz). Analysis was done on 200 steps cycles of treadmill walking at the velocity of 0.83 m·s-1. To compare the differences of GRFs in maximal weight acceptance, middle stance and push-off phase and time to reach these forces among three pregnancy stages, repeated-measures ANOVA was performed to obtain partial eta-squared values to
measure the effect size (η>.10). To interpret the overall mean differences between the three pregnancy stages Cohen’s d was applied (d>.20). Altered gait pattern during advancing phases of pregnancy demonstrated in the current study by a significant decrease in force of maximal weight acceptance and an increase in main time variables of the step is suggested to be a protective mechanism against overloading the contact area of the foot despite the increase in body mass.

Keywords

gait, ground reaction force, pregnancy, treadmill walking

Hrčak ID:

150551

URI

https://hrcak.srce.hr/150551

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