Volume 8, Issue 2 (9-2022)
J Sport Biomech 2022, 8(2): 154-167 |
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1- Department of Sports Biomechanics, Centeral Tehran Branch, Islamc Azad University, Tehran, Iran.
2- Department of Physical Education and Sports Sciences, Faculty of Physical Education and Sports Sciences, Islamic Azad University of Karaj, Karaj, Iran.
2- Department of Physical Education and Sports Sciences, Faculty of Physical Education and Sports Sciences, Islamic Azad University of Karaj, Karaj, Iran.
Abstract: (777 Views)
Objective: The aim of this study was to investigate the effect of increasing running speed on motor chain and kinetic ratio of lower limb joints.
Methods: The statistical population of this study consisted of healthy people and ordinary runners. A group of 28 healthy male subjects, including runners who ran more than 20 km per week, were selected via convenience sampling method as research sample. They were also fully acquainted with running on a treadmill. Three-dimensional kinetics parameters of the lower limb joints, hip, knee, and ankle, torque and the kinetic ratio of the minimum, maximum and mean values of these joints at three different speeds 2/5,3/5 and 4/5 was measured by two important instruments, the camera and the force plate. Shapiro-wilks test was used to check the normality of data distribution and data analysis was performed using analysis of variance with repeated measurements or repeated measure through SPSS software, version 22.
Results: Based on the results obtained in this study, the torque ratio of hip to knee and thigh to ankle joints was not significant in any of the anatomical plates and axes at three speeds (p≥0.05). Also, the ratio of torque of knee joints to ankle in three speeds and three planes did not show a significant difference ( p≥0.05).
Conclusion: According to the results obtained in this study, it seems that with the knowledge of the moment changes of the lower limb joints, practical solutions can be provided to reduce the amount of damage when running, especially on a treadmill, to these 3 joints.
Methods: The statistical population of this study consisted of healthy people and ordinary runners. A group of 28 healthy male subjects, including runners who ran more than 20 km per week, were selected via convenience sampling method as research sample. They were also fully acquainted with running on a treadmill. Three-dimensional kinetics parameters of the lower limb joints, hip, knee, and ankle, torque and the kinetic ratio of the minimum, maximum and mean values of these joints at three different speeds 2/5,3/5 and 4/5 was measured by two important instruments, the camera and the force plate. Shapiro-wilks test was used to check the normality of data distribution and data analysis was performed using analysis of variance with repeated measurements or repeated measure through SPSS software, version 22.
Results: Based on the results obtained in this study, the torque ratio of hip to knee and thigh to ankle joints was not significant in any of the anatomical plates and axes at three speeds (p≥0.05). Also, the ratio of torque of knee joints to ankle in three speeds and three planes did not show a significant difference ( p≥0.05).
Conclusion: According to the results obtained in this study, it seems that with the knowledge of the moment changes of the lower limb joints, practical solutions can be provided to reduce the amount of damage when running, especially on a treadmill, to these 3 joints.
Type of Study: Research |
Subject:
Special
Received: 2022/02/5 | Accepted: 2022/08/29 | Published: 2022/09/22
Received: 2022/02/5 | Accepted: 2022/08/29 | Published: 2022/09/22
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