Journal of Sport Physiology Special Groups
The effect of fatigue on the range of ground reaction force in national team wrestlers during running
Document Type : Original Article
Authors
1 1. Senior Expert in Physical Education and Sports Sciences, Department of Physical Education and Sports Sciences, Faculty of Educational Sciences and Psychology, Mohaghegh Ardabili University, Ardabil, Iran
2 2. University Professor, Department of Physical Education and Sports Sciences, Faculty of Educational Sciences and Psychology, Mohaghegh Ardabili University, Ardabil, Iran.
3 Doctoral student of Physical Education and Sports Sciences, Department of Physical Education and Sports Sciences, Faculty of Educational Sciences and Psychology, Mohaghegh Ardabili University, Ardabil, Iran
Abstract
Background and purpose: The purpose of this research is to investigate the effect of fatigue on the range of ground reaction force in national team wrestlers during running.
Methodology: The statistical population of this research was made up of men with an age range of 18 to 22 who were members of the national wrestling team. A Bartek force plate with a sampling rate of 1000 Hz was used to record the ground reaction force during running. The subjects were given a pre-test, then exercise and fatigue, and after fatigue, a post-test was taken. A t-test was used to analyze the data. The Shapiro-Wilk test was used to check the normality of the data distribution.
Findings: The time to reach the vertical peak when the heel separates from the ground before and after fatigue had a statistically significant difference (p = 0.049). Also, the findings showed that the fatigue factor for the variables impulse and vertical loading rate was not statistically significant. The results showed that internal-external force p = 0.02 has a significant difference compared to other vertical components.
Conclusion: The fxpo variable indicates the amount of ground reaction force in the inner direction, and its increase is related to the increase of foot supination, considering that after fatigue, the amount of this variable has increased, so the values of foot supination will probably increase, which can lead to the weakness of the ankle joint during loading response.
Keywords
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