چکیده:
The mechanical alignment of the lower limb generally affects the stability of the knee joint in athletes. Research suggests that ankle pronation is effective in the prevalence of ACL injury, but no study has been conducted on the neuromuscular control of athletes with increased ankle pronation in relation to ACL injury. Therefore, the aim of this study was to investigate some neuromuscular risk factors related to ACL injury in individuals with ankle pronation abnormality. Fifteen athletes with increased ankle pronation and fifteen healthy athletes were purposefully selected as a statistical sample. Electromyography signals were recorded using surface electrodes from four muscles (gluteus medius, lateral hamstring, vastus lateralis, and soleus). The results of the MANOVA test showed that there is a significant difference between the two groups in the gluteus medius (P=0.029) and biceps femoris (P=0.001) muscles in the feedforward phase and in the gluteus medius muscle (P=0.005) in the feedback phase, and there is no significant relationship between the two groups in the feedforward and feedback activity of the vastus lateralis and soleus muscles (P≤0.05). Therefore, ankle pronation abnormality can be involved as a risk factor in the occurrence of ACL injuries by changing the neuromuscular function of the gluteus medius and lateral hamstring muscles.
خلاصه ماشینی:
Therefore, ankle pronation abnormality can be involved as a risk factor in the occurrence of ACL injuries by changing the neuromuscular function of the gluteus medius and lateral hamstring muscles.
Therefore, the aim of this research was to compare the feedforward and feedback electromyographic activity levels of the gluteus medius, external hamstring, vastus lateralis (lateral head), and soleus muscles of athletes with increased ankle pronation with healthy athletes during a single-leg jump landing task.
Examining the amount of feedforward and feedback muscle activity and between-group differences between the two groups Control (n = 15) and individuals with ankle pronation abnormality (n = 15) (Refer to the image on the page) Discussion and Conclusion The purpose of this study was to compare the amount of feedforward and feedback electromyographic activity of the gluteus medius, biceps femoris, vastus lateralis, and soleus muscles in athletes with increased ankle pronation with healthy athletes during a single-leg jump landing task.
Decreased activity and strength of the hamstring muscles lead to decreased knee stability and changes in knee and hip angles during various movements, which ultimately expose the individual to ACL ligament injury (24).
Therefore, according to the results of this study, reduced activity of the external hamstring before heel strike in the jump landing movement in individuals with pronation malformation of the ankle is a significant predictor of ACL injury.
Therefore, ankle pronation malformation, combined with reduced gluteus muscle activity during jump landing, is a risk factor for ACL injury.
Therefore, increased ankle pronation malformation, with changes in the neuromuscular function of the gluteus medius and external hamstring muscles, can be involved as a risk factor in the occurrence of ACL injuries.
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